Pub Date : 2026-04-01Epub Date: 2025-11-25DOI: 10.1016/j.jechem.2025.11.027
Ximeng Zhang, Jay Nejad, Zhibin Ye
In this paper, aromatic nitroso compounds are investigated for their electrochemical performance as organic cathodes for lithium-ion batteries, with an elucidation of their redox mechanism. For the first time, ex situ spectroscopic analyses of small-molecule mono-nitroso compounds (including nitrosobenzene, 2-nitrosotoluene, 4-nitrosobenzoic acid, and lithium 4-nitrosobenzoate) reveal a universal, irreversible transformation of their nitroso dimers to azo species during the first electrochemical cycle, establishing azo groups as the true reversible redox-active centers. Unlike small-molecule analogs that convert rapidly, polymeric 1,4-dinitrosobenzene (DNSB) evolves gradually through azoxy intermediates, accompanied by increased conjugation and enhanced structural stability. To enhance utilization efficiency and cycling stability, DNSB is encapsulated in porous carbons (BP2000, Ketjenblack) via solution infusion, yielding composites with a high initial capacity of 383 mAh g−1 and a stable reversible capacity of 102 mAh g−1 after 800 cycles at 150 mA g−1. Electrochemical impedance spectroscopy confirms reduced charge-transfer resistance and improved interfacial stability. This work uncovers the fundamental nitroso-to-azo conversion mechanism and demonstrates a scalable carbon-confinement strategy to construct durable polymeric azo-type organic electrodes from nitroso compounds for sustainable energy storage.
本文研究了芳香亚硝基化合物作为锂离子电池有机阴极的电化学性能,并阐明了其氧化还原机理。对小分子单亚硝基化合物(包括亚硝基苯、2-亚硝基甲苯、4-亚硝基苯甲酸和4-亚硝基苯甲酸锂)的非原位光谱分析首次揭示了它们的亚硝基二聚体在第一次电化学循环中普遍、不可逆地转化为偶氮物质,并确立了偶氮基团是真正可逆的氧化还原活性中心。与快速转化的小分子类似物不同,聚合物1,4-二硝基苯(DNSB)通过偶氮基中间体逐渐演变,伴随着增加的偶联性和增强的结构稳定性。为了提高DNSB的利用效率和循环稳定性,通过溶液注入将DNSB封装在多孔碳(BP2000, Ketjenblack)中,制备的复合材料在150 mA g - 1下循环800次后具有383 mAh g - 1的高初始容量和102 mAh g - 1的稳定可逆容量。电化学阻抗谱证实了电荷转移电阻的降低和界面稳定性的提高。这项工作揭示了亚硝基到偶氮转化的基本机制,并展示了一种可扩展的碳约束策略,可以从亚硝基化合物中构建持久的聚合物偶氮型有机电极,用于可持续的能量储存。
{"title":"Revealing the electrochemical evolution of nitroso-to-azo cathodes for lithium-ion storage","authors":"Ximeng Zhang, Jay Nejad, Zhibin Ye","doi":"10.1016/j.jechem.2025.11.027","DOIUrl":"10.1016/j.jechem.2025.11.027","url":null,"abstract":"<div><div>In this paper, aromatic nitroso compounds are investigated for their electrochemical performance as organic cathodes for lithium-ion batteries, with an elucidation of their redox mechanism. For the first time, ex situ spectroscopic analyses of small-molecule mono-nitroso compounds (including nitrosobenzene, 2-nitrosotoluene, 4-nitrosobenzoic acid, and lithium 4-nitrosobenzoate) reveal a universal, irreversible transformation of their nitroso dimers to azo species during the first electrochemical cycle, establishing azo groups as the true reversible redox-active centers. Unlike small-molecule analogs that convert rapidly, polymeric 1,4-dinitrosobenzene (DNSB) evolves gradually through azoxy intermediates, accompanied by increased conjugation and enhanced structural stability. To enhance utilization efficiency and cycling stability, DNSB is encapsulated in porous carbons (BP2000, Ketjenblack) via solution infusion, yielding composites with a high initial capacity of 383 mAh g<sup>−1</sup> and a stable reversible capacity of 102 mAh g<sup>−1</sup> after 800 cycles at 150 mA g<sup>−1</sup>. Electrochemical impedance spectroscopy confirms reduced charge-transfer resistance and improved interfacial stability. This work uncovers the fundamental nitroso-to-azo conversion mechanism and demonstrates a scalable carbon-confinement strategy to construct durable polymeric azo-type organic electrodes from nitroso compounds for sustainable energy storage.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 212-225"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2025-11-24DOI: 10.1016/j.jechem.2025.11.022
Yayi He , Ruobing Huang , Xin Guo , Wenting Qiu , Xiangyu Yu , Zeqi Song , Liuxiong Luo , Shen Gong , Bing Liu
The application of highly active PtGa alloy catalysts in the hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR) is limited by insufficient stability. This study employs elemental doping to simultaneously promote L12 ordering and support-interface coupling, thereby synergistically improving the activity and stability of PtGa alloys. Through an efficient screening framework, vanadium is identified as the optimal dopant. The Pt58Ga30V12-VC/CNT catalyst achieves a low HER overpotential of 10 mV at 10 mA cm−2, with only a 12 mV increase after 135-h stability test. The MOR mass activity reaches 5547 mA mg−1Pt (2.51 times that of Pt66Ga34/CNT), retaining 1646 mA mg−1Pt after 5000-second stability test (3.02 times that of Pt66Ga34/CNT). The coupled HER-MOR methanol electrolysis cell achieves a voltage of 0.444 V at 10 mA cm−2, maintaining a current density of 16 mA cm−2 after 12-h stability test (9.35 times that of Pt66Ga34/CNT). Density functional theory calculations further reveal that vanadium doping modulates the PtGa alloy’s electronic structure, lowers reaction reaction free energy change, and facilitates performance enhancement. This strategy provides a reasonable approach for developing efficient and durable multifunctional electrocatalysts for hydrogen production.
高活性PtGa合金催化剂在析氢反应(HER)和甲醇氧化反应(MOR)中的应用受到稳定性不足的限制。本研究采用元素掺杂同时促进L12有序和支撑界面耦合,从而协同提高PtGa合金的活性和稳定性。通过一个有效的筛选框架,钒被确定为最佳的掺杂剂。Pt58Ga30V12-VC/CNT催化剂在10 mA cm−2下实现了10 mV的低HER过电位,在135小时稳定性测试后仅增加了12 mV。MOR质量活度达到5547 mA mg - 1Pt(是Pt66Ga34/CNT的2.51倍),稳定性测试5000秒后保持1646 mA mg - 1Pt(是Pt66Ga34/CNT的3.02倍)。耦合HER-MOR甲醇电解池在10 mA cm - 2下电压为0.444 V,经过12 h稳定性测试后电流密度保持在16 mA cm - 2(是Pt66Ga34/CNT的9.35倍)。密度泛函理论计算进一步表明,钒的掺杂调节了PtGa合金的电子结构,降低了反应的自由能变化,有利于性能的提高。该策略为开发高效、耐用的多功能制氢电催化剂提供了合理的途径。
{"title":"Efficient design of Pt58Ga30V12-VC/CNT as multifunctional electrocatalyst with high activity and stability for hydrogen production","authors":"Yayi He , Ruobing Huang , Xin Guo , Wenting Qiu , Xiangyu Yu , Zeqi Song , Liuxiong Luo , Shen Gong , Bing Liu","doi":"10.1016/j.jechem.2025.11.022","DOIUrl":"10.1016/j.jechem.2025.11.022","url":null,"abstract":"<div><div>The application of highly active PtGa alloy catalysts in the hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR) is limited by insufficient stability. This study employs elemental doping to simultaneously promote L1<sub>2</sub> ordering and support-interface coupling, thereby synergistically improving the activity and stability of PtGa alloys. Through an efficient screening framework, vanadium is identified as the optimal dopant. The Pt<sub>58</sub>Ga<sub>30</sub>V<sub>12</sub>-VC/CNT catalyst achieves a low HER overpotential of 10 mV at 10 mA cm<sup>−2</sup>, with only a 12 mV increase after 135-h stability test. The MOR mass activity reaches 5547 mA mg<sup>−1</sup><sub>Pt</sub> (2.51 times that of Pt<sub>66</sub>Ga<sub>34</sub>/CNT), retaining 1646 mA mg<sup>−1</sup><sub>Pt</sub> after 5000-second stability test (3.02 times that of Pt<sub>66</sub>Ga<sub>34</sub>/CNT). The coupled HER-MOR methanol electrolysis cell achieves a voltage of 0.444 V at 10 mA cm<sup>−2</sup>, maintaining a current density of 16 mA cm<sup>−2</sup> after 12-h stability test (9.35 times that of Pt<sub>66</sub>Ga<sub>34</sub>/CNT). Density functional theory calculations further reveal that vanadium doping modulates the PtGa alloy’s electronic structure, lowers reaction reaction free energy change, and facilitates performance enhancement. This strategy provides a reasonable approach for developing efficient and durable multifunctional electrocatalysts for hydrogen production.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 200-211"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2025-11-21DOI: 10.1016/j.jechem.2025.11.020
Wei Wang , Jiaqi Wang , Jian Zhang , Kaifeng Lin , Boyuan Hu , Xingrui Zhang , Yayu Dong , Debin Xia , Evgeny Tretyakov , Yulin Yang
Morphological imperfections and phase segregation at the buried perovskite interface have posed significant challenges to further enhancing the efficiency of perovskite solar cells (PSCs). In this work, a halogen-functionalized porphyrin-based metal–organic framework (MOF) nanosheet, Cu-TCPP(I), is introduced as a multifunctional buffer layer at the SnO2/perovskite interface. The Cu-TCPP(I) nanosheets effectively passivate interfacial defects, regulate crystallization kinetics, and stabilize the photoactive α-phase perovskite against undesirable transition to the δ-phase. This interfacial engineering strategy enhances charge extraction efficiency and suppresses non-radiative recombination, enabling devices to achieve a champion power conversion efficiency (PCE) of 24.62 % with negligible hysteresis. The optimized devices retain 92 % of their initial PCE after 1600 h of storage under ambient conditions, demonstrating excellent operational stability. Importantly, the Cu-TCPP(I) interlayer exhibits strong lead-chelating capability, significantly reducing the risk of lead leakage. This multifunctional interfacial design presents a promising route toward high-efficiency, stable, and environmentally friendly PSCs for large-scale photovoltaic applications.
{"title":"Halogen-containing ultrathin 2D MOF nanosheets for enhanced stability and efficiency in perovskite solar cells","authors":"Wei Wang , Jiaqi Wang , Jian Zhang , Kaifeng Lin , Boyuan Hu , Xingrui Zhang , Yayu Dong , Debin Xia , Evgeny Tretyakov , Yulin Yang","doi":"10.1016/j.jechem.2025.11.020","DOIUrl":"10.1016/j.jechem.2025.11.020","url":null,"abstract":"<div><div>Morphological imperfections and phase segregation at the buried perovskite interface have posed significant challenges to further enhancing the efficiency of perovskite solar cells (PSCs). In this work, a halogen-functionalized porphyrin-based metal–organic framework (MOF) nanosheet, Cu-TCPP(I), is introduced as a multifunctional buffer layer at the SnO<sub>2</sub>/perovskite interface. The Cu-TCPP(I) nanosheets effectively passivate interfacial defects, regulate crystallization kinetics, and stabilize the photoactive α-phase perovskite against undesirable transition to the δ-phase. This interfacial engineering strategy enhances charge extraction efficiency and suppresses non-radiative recombination, enabling devices to achieve a champion power conversion efficiency (PCE) of 24.62 % with negligible hysteresis. The optimized devices retain 92 % of their initial PCE after 1600 h of storage under ambient conditions, demonstrating excellent operational stability. Importantly, the Cu-TCPP(I) interlayer exhibits strong lead-chelating capability, significantly reducing the risk of lead leakage. This multifunctional interfacial design presents a promising route toward high-efficiency, stable, and environmentally friendly PSCs for large-scale photovoltaic applications.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 121-128"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2025-12-19DOI: 10.1016/j.jechem.2025.12.025
Feng Sun , Anjun Hu , Junmei Han , Shenghai Xin , Zhihui Ma , Youwei Wang , Jianbin Li , Qi Wan , Ruidie Tang , Shaofei Wu , Xuanhui Qu , Ping Li
Silicon dioxide (SiO) is regarded as a promising anode candidate for high-energy-density lithium-ion batteries (LIBs) owing to its superior theoretical specific capacity. However, SiO anodes encounter substantial challenges, including substantial volume expansion and persistent growth of a thick solid electrolyte interphase (SEI). In this work, a composite conductive network with dual pinning and piezoelectric effects is proposed, which is cleverly designed to improve the electrochemical reaction kinetics of the electrode. Within the proposed network architecture, single-walled carbon nanotubes (CNTs) serve as fast electronic conductors and structural protective layers, forming a three-dimensional (3D) coating network on the surface of SiO particles. Barium titanate (BTO) nanoparticles are anchored at the nodes of the CNT network through the formation of rigid anchor points, dispersing stress throughout the network. Concurrently, mechanical stress induced by electrochemical reactions prompts BTO to generate a local electric field, facilitating Li+ transport. Consequently, the developed anode (SiO@PCB) demonstrates remarkable electrochemical performance in LIBs, exhibiting a capacity retention rate of 94% even after 500 cycles at 1 A g−1. Furthermore, a capacity retention of 71.6% is demonstrated by SiO@PCB anode after 1000 cycles at 5 C in sulfide-based all-solid-state LIBs using an NCM83 cathode. This composite conductive network structure provides an effective guidance plan for achieving interface stability and long-term lithium storage of Si-based anodes.
二氧化硅(SiO)由于其优越的理论比容量,被认为是高能量密度锂离子电池(LIBs)极有前途的阳极候选材料。然而,SiO阳极面临着巨大的挑战,包括大量的体积膨胀和厚固体电解质界面(SEI)的持续生长。在这项工作中,提出了一种具有双钉钉和压电效应的复合导电网络,该网络的设计巧妙地改善了电极的电化学反应动力学。在提出的网络结构中,单壁碳纳米管(CNTs)作为快速电子导体和结构保护层,在SiO颗粒表面形成三维(3D)涂层网络。钛酸钡(BTO)纳米颗粒通过形成刚性锚点锚定在碳纳米管网络的节点上,在整个网络中分散应力。同时,电化学反应引起的机械应力促使BTO产生局部电场,有利于Li+的输运。因此,开发的阳极(SiO@PCB)在锂离子电池中表现出卓越的电化学性能,即使在1 a g−1下循环500次后,其容量保持率仍为94%。此外,在使用NCM83阴极的硫化物基全固态锂电池中,SiO@PCB阳极在5℃下循环1000次后,其容量保持率为71.6%。这种复合导电网络结构为实现硅基阳极的界面稳定性和锂的长期存储提供了有效的指导方案。
{"title":"Synergistic pinning and piezoelectric effects in CNT/BaTiO3 network for SiO-based anodes toward ultra-stable lithium batteries","authors":"Feng Sun , Anjun Hu , Junmei Han , Shenghai Xin , Zhihui Ma , Youwei Wang , Jianbin Li , Qi Wan , Ruidie Tang , Shaofei Wu , Xuanhui Qu , Ping Li","doi":"10.1016/j.jechem.2025.12.025","DOIUrl":"10.1016/j.jechem.2025.12.025","url":null,"abstract":"<div><div>Silicon dioxide (SiO) is regarded as a promising anode candidate for high-energy-density lithium-ion batteries (LIBs) owing to its superior theoretical specific capacity. However, SiO anodes encounter substantial challenges, including substantial volume expansion and persistent growth of a thick solid electrolyte interphase (SEI). In this work, a composite conductive network with dual pinning and piezoelectric effects is proposed, which is cleverly designed to improve the electrochemical reaction kinetics of the electrode. Within the proposed network architecture, single-walled carbon nanotubes (CNTs) serve as fast electronic conductors and structural protective layers, forming a three-dimensional (3D) coating network on the surface of SiO particles. Barium titanate (BTO) nanoparticles are anchored at the nodes of the CNT network through the formation of rigid anchor points, dispersing stress throughout the network. Concurrently, mechanical stress induced by electrochemical reactions prompts BTO to generate a local electric field, facilitating Li<sup>+</sup> transport. Consequently, the developed anode (SiO@PCB) demonstrates remarkable electrochemical performance in LIBs, exhibiting a capacity retention rate of 94% even after 500 cycles at 1 A g<sup>−1</sup>. Furthermore, a capacity retention of 71.6% is demonstrated by SiO@PCB anode after 1000 cycles at 5 C in sulfide-based all-solid-state LIBs using an NCM83 cathode. This composite conductive network structure provides an effective guidance plan for achieving interface stability and long-term lithium storage of Si-based anodes.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 748-758"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2025-12-23DOI: 10.1016/j.jechem.2025.12.030
Yuxuan Gao , Huan Liu , Xiaopeng Liu , Yida Zhang , Tianyu Zhang , Jie Bai
Hydrofuroin (HDF), a key precursor of fuel, can be produced by electrocatalytic furfural (FF) hydrodimerization, offering a promising way to generate value-added products. However, this process is hindered by sluggish C–C coupling and hydrogenation steps, resulting in low Faradaic efficiency (FE). Herein, atomically dispersed Ru sites anchored on lattice vacancies of La0.9NiO3 (Ru-La0.9NiO3) electrocatalysts were demonstrated as an efficient electrocatalyst for FF hydrodimerization, where an intermediate spillover strategy significantly enhances the FE. Mechanistic investigations reveal that Ru single atoms serve as active sites for the initial hydrogenation to form the FF-CHOH* intermediate with almost 100% selectivity, thereby suppressing the side reaction of hydrogen evolution. Subsequently, the increased FE-CHOH* intermediate undergoes spillover to adjacent Ni sites, decreasing the energy barrier for the subsequent C–C coupling step to HDF (ΔG = 0.63 eV). As a result, the Ru-La0.9NiO3 catalyst displays a high FE of 74% and a production rate of 3.95 mmol cm−2 h−1 toward electrocatalytic FF hydrodimerization to HDF product. This work provides an efficient intermediate spillover approach, offering mechanistic insights into Ru-Ni synergism in Ru-La0.9NiO3 and providing a sensible method for electrocatalytic hydrodimerization of furfural to produce high-value products.
{"title":"Spillover of intermediates from Ru single atoms to La0.9NiO3 for boosting electrocatalytic furfural C–C coupling into jet fuel precursors","authors":"Yuxuan Gao , Huan Liu , Xiaopeng Liu , Yida Zhang , Tianyu Zhang , Jie Bai","doi":"10.1016/j.jechem.2025.12.030","DOIUrl":"10.1016/j.jechem.2025.12.030","url":null,"abstract":"<div><div>Hydrofuroin (HDF), a key precursor of fuel, can be produced by electrocatalytic furfural (FF) hydrodimerization, offering a promising way to generate value-added products. However, this process is hindered by sluggish C–C coupling and hydrogenation steps, resulting in low Faradaic efficiency (FE). Herein, atomically dispersed Ru sites anchored on lattice vacancies of La<sub>0.9</sub>NiO<sub>3</sub> (Ru-La<sub>0.9</sub>NiO<sub>3</sub>) electrocatalysts were demonstrated as an efficient electrocatalyst for FF hydrodimerization, where an intermediate spillover strategy significantly enhances the FE. Mechanistic investigations reveal that Ru single atoms serve as active sites for the initial hydrogenation to form the FF-CHOH* intermediate with almost 100% selectivity, thereby suppressing the side reaction of hydrogen evolution. Subsequently, the increased FE-CHOH* intermediate undergoes spillover to adjacent Ni sites, decreasing the energy barrier for the subsequent C–C coupling step to HDF (Δ<em>G</em> = 0.63 eV). As a result, the Ru-La<sub>0.9</sub>NiO<sub>3</sub> catalyst displays a high FE of 74% and a production rate of 3.95 mmol cm<sup>−2</sup> h<sup>−1</sup> toward electrocatalytic FF hydrodimerization to HDF product. This work provides an efficient intermediate spillover approach, offering mechanistic insights into Ru-Ni synergism in Ru-La<sub>0.9</sub>NiO<sub>3</sub> and providing a sensible method for electrocatalytic hydrodimerization of furfural to produce high-value products.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 769-777"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2025-12-13DOI: 10.1016/j.jechem.2025.12.010
Zijie Yang , Hao Zhang , Zhaoyan Luo , Chunlei Bian , Yinnan Qian , Siyuan Zhu , Lei Zhang , Qianling Zhang , Chuanxin He , Junjie Ge , Xiangzhong Ren
Recent efforts in proton-exchange membrane water electrolysis (PEMWE) focus on developing superior catalysts and membrane electrode assemblies (MEAs) to achieve efficient expression of performance low-IrOx-loaded PEMWE systems. Herein, we report an infusive result that, through anchoring amorphous IrOx clusters onto Nb2O5 support, we were able to switch the reaction pathway and optimize the MEA microenvironment. Specifically, the near-ideal IrIr atomic configuration and the strong coupling strength of the *O and *OH species on adjacent iridium atoms in IrOx/Nb2O5 facilitate direct O*O* radical coupling to form an intermediate O*O*Ir configuration during acidic OER without generating OOH* species. This configuration significantly enhances the OER Ir mass activity from 23.1 to 424.2 A g Ir−1 at 1.5 V, while reducing the overpotential (@10 mA cm−2) from 339 to below 190 mV compared to IrO2. Furthermore, the IrOx/Nb2O5 catalyst also addresses the electron and proton transport issues in low-Ir-loaded MEA, through tuning the band structure and wettability of the low-Ir-loaded catalyst layer and Ti porous transport layer interface. The resulting catalysts achieve ultra-low overpotentials in a PEMWE system, with cell voltages of 1.57 and 1.83 V at current densities of 1 and 3 A cm−2 and stable operation under industrial conditions for 1000 h.
近年来,质子交换膜水电解(PEMWE)的研究重点是开发高性能催化剂和膜电极组件(MEAs),以实现低iox负载的PEMWE系统的高效表达。在此,我们报告了一个重要的结果,通过将非晶IrOx簇锚定在Nb2O5载体上,我们能够切换反应途径并优化MEA微环境。具体来说,IrOx/Nb2O5中接近理想的IrIr原子构型和*O和*OH在相邻铱原子上的强耦合强度有助于在酸性OER中直接O*O*自由基耦合形成中间O*O*Ir构型,而不会产生OOH*物质。与IrO2相比,这种结构显著提高了OER Ir质量活性,在1.5 V下从23.1到424.2 A g Ir−1,同时将过电位(@10 mA cm−2)从339降低到190 mV以下。此外,IrOx/Nb2O5催化剂还通过调整低ir负载的催化剂层和Ti多孔传输层界面的能带结构和润湿性,解决了低ir负载的MEA中的电子和质子传输问题。所得到的催化剂在PEMWE系统中实现了超低过电位,在电流密度为1和3 a cm−2时,电池电压分别为1.57和1.83 V,在工业条件下稳定运行1000小时。
{"title":"Coupled reaction pathways and microenvironment engineering in IrOx/Nb2O5 for efficient water electrolysis","authors":"Zijie Yang , Hao Zhang , Zhaoyan Luo , Chunlei Bian , Yinnan Qian , Siyuan Zhu , Lei Zhang , Qianling Zhang , Chuanxin He , Junjie Ge , Xiangzhong Ren","doi":"10.1016/j.jechem.2025.12.010","DOIUrl":"10.1016/j.jechem.2025.12.010","url":null,"abstract":"<div><div>Recent efforts in proton-exchange membrane water electrolysis (PEMWE) focus on developing superior catalysts and membrane electrode assemblies (MEAs) to achieve efficient expression of performance low-IrO<em><sub>x</sub></em>-loaded PEMWE systems. Herein, we report an infusive result that, through anchoring amorphous IrO<em><sub>x</sub></em> clusters onto Nb<sub>2</sub>O<sub>5</sub> support, we were able to switch the reaction pathway and optimize the MEA microenvironment. Specifically, the near-ideal Ir<img>Ir atomic configuration and the strong coupling strength of the *O and *OH species on adjacent iridium atoms in IrO<em><sub>x</sub></em>/Nb<sub>2</sub>O<sub>5</sub> facilitate direct O*<img>O* radical coupling to form an intermediate O*<img>O*<img>Ir configuration during acidic OER without generating OOH* species. This configuration significantly enhances the OER Ir mass activity from 23.1 to 424.2 A g Ir<sup>−1</sup> at 1.5 V, while reducing the overpotential (@10 mA cm<sup>−2</sup>) from 339 to below 190 mV compared to IrO<sub>2</sub>. Furthermore, the IrO<em><sub>x</sub></em>/Nb<sub>2</sub>O<sub>5</sub> catalyst also addresses the electron and proton transport issues in low-Ir-loaded MEA, through tuning the band structure and wettability of the low-Ir-loaded catalyst layer and Ti porous transport layer interface. The resulting catalysts achieve ultra-low overpotentials in a PEMWE system, with cell voltages of 1.57 and 1.83 V at current densities of 1 and 3 A cm<sup>−2</sup> and stable operation under industrial conditions for 1000 h.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 616-626"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2025-12-13DOI: 10.1016/j.jechem.2025.12.007
Xiaoqi Peng , Rongfeng Tang , Zhiyuan Cai , Zequan Jiang , Zichen Ruan , Shuwei Sheng , Jianyu Li , Yawu He , Shangfeng Yang , Changfei Zhu , Yi Zhang , Tao Chen
Antimony selenosulfide (Sb2(S,Se)3) has recently emerged as an attractive thin-film photovoltaic absorber because of its tunable bandgap, excellent optoelectronic properties, and long-term stability. Hydrothermal synthesis using separate Sb, Se, and S precursors enables the direct preparation of ternary Sb2(S,Se)3 thin films, and photovoltaic devices with efficiencies above 10% have been reported. However, due to the higher chemical reactivity of selenium compared to sulfur, the incorporation of Se occurs much faster, leading to compositional inhomogeneity with selenide enrichment near the electron transport interface. This reaction characteristic produces a reverse bandgap gradient that is detrimental to charge extraction. In this study, we unveil a kinetic modulation strategy by employing thiourea (TU) as a multifunctional additive to precisely regulate precursor reaction pathways during hydrothermal growth. TU coordinating with SSeO32− intermediates generate stable complexes, thereby suppressing uncontrolled selenide release and achieving a balanced Se/S incorporation. This manipulation engenders Sb2(S,Se)3 films with homogenized bandgap distributions, well-aligned interfacial energetics, and substantially reduced defect densities. Consequently, the optimized devices attain a power conversion efficiency of 10.83%, representing the state-of-the-art performance for Sb2(S,Se)3 photovoltaics. This study establishes a novel method for in situ bandgap homogenization and deepens the synthetic mechanism regarding mixed-anion chalcogenide thin films.
{"title":"Homogenizing bandgap distribution of Sb2(S,Se)3 absorber boosting the efficiency of solar cells to 10.83%","authors":"Xiaoqi Peng , Rongfeng Tang , Zhiyuan Cai , Zequan Jiang , Zichen Ruan , Shuwei Sheng , Jianyu Li , Yawu He , Shangfeng Yang , Changfei Zhu , Yi Zhang , Tao Chen","doi":"10.1016/j.jechem.2025.12.007","DOIUrl":"10.1016/j.jechem.2025.12.007","url":null,"abstract":"<div><div>Antimony selenosulfide (Sb<sub>2</sub>(S,Se)<sub>3</sub>) has recently emerged as an attractive thin-film photovoltaic absorber because of its tunable bandgap, excellent optoelectronic properties, and long-term stability. Hydrothermal synthesis using separate Sb, Se, and S precursors enables the direct preparation of ternary Sb<sub>2</sub>(S,Se)<sub>3</sub> thin films, and photovoltaic devices with efficiencies above 10% have been reported. However, due to the higher chemical reactivity of selenium compared to sulfur, the incorporation of Se occurs much faster, leading to compositional inhomogeneity with selenide enrichment near the electron transport interface. This reaction characteristic produces a reverse bandgap gradient that is detrimental to charge extraction. In this study, we unveil a kinetic modulation strategy by employing thiourea (TU) as a multifunctional additive to precisely regulate precursor reaction pathways during hydrothermal growth. TU coordinating with SSeO<sub>3</sub><sup>2−</sup> intermediates generate stable complexes, thereby suppressing uncontrolled selenide release and achieving a balanced Se/S incorporation. This manipulation engenders Sb<sub>2</sub>(S,Se)<sub>3</sub> films with homogenized bandgap distributions, well-aligned interfacial energetics, and substantially reduced defect densities. Consequently, the optimized devices attain a power conversion efficiency of 10.83%, representing the state-of-the-art performance for Sb<sub>2</sub>(S,Se)<sub>3</sub> photovoltaics. This study establishes a novel method for in situ bandgap homogenization and deepens the synthetic mechanism regarding mixed-anion chalcogenide thin films.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 627-637"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2025-12-06DOI: 10.1016/j.jechem.2025.12.001
Yawei Li , Yuanhang Ma , Arslan Hameed , Xiao Chen , Tingting Fan , Yuyan Tang , Ping Chen , Shoujie Liu , Yi Xiao , Peng Li
The development of highly efficient electrocatalysts for the ethylene glycol oxidation reaction (EGOR) is pivotal to advancing direct ethylene glycol fuel cells (DEGFCs). Herein, we present a one-pot synthesis of ultrafine PdInBi nanoparticles supported on carbon (PdInBi/C NPs), which exhibit superior catalytic properties. The strategic incorporation of indium and bismuth facilitates strong p-d orbital hybridization with palladium, effectively modulating its electronic structure. Meanwhile, the introduction of the oxyphilic bismuth component enhances hydroxide (OH−) adsorption on the catalyst surface. Additionally, the ultrafine particle size promotes extensive exposure of active sites, further contributing to the enhanced electrocatalytic performance. In alkaline media, the PdInBi/C catalyst delivers an exceptional mass activity of 15.53 A mgPd−1, which is 19.6 times higher than that of commercial Pd/C. Furthermore, it exhibits a remarkable electrochemically active surface area (ECSA) of 90.18 m2 g−1 and strong resistance to CO poisoning. Notably, in situ Fourier-transform infrared (FTIR) spectroscopy reveals that PdInBi/C NPs effectively suppress the formation and adsorption of CO intermediates and enhance C1 product selectivity. Theoretical calculations reveal that the tailored electronic structure of PdInBi/C NPs significantly lowers the energy barrier of the rate-determining step in EGOR and enhances C–C bond cleavage efficiency.
开发用于乙二醇氧化反应(EGOR)的高效电催化剂是推进直接乙二醇燃料电池(DEGFCs)发展的关键。在此,我们提出了一锅合成碳负载的超细PdInBi纳米颗粒(PdInBi/C NPs),其具有优异的催化性能。铟和铋的策略性结合促进了与钯的强p-d轨道杂化,有效地调节了其电子结构。同时,亲氧铋组分的引入增强了氢氧化物(OH−)在催化剂表面的吸附。此外,超细颗粒尺寸促进了活性位点的广泛暴露,进一步提高了电催化性能。在碱性介质中,PdInBi/C催化剂的质量活性为15.53 A mgPd−1,是商用Pd/C催化剂的19.6倍。电化学活性表面积(ECSA)为90.18 m2 g−1,具有较强的抗CO中毒能力。值得注意的是,原位傅里叶变换红外(FTIR)光谱显示,PdInBi/C NPs有效抑制CO中间体的形成和吸附,提高了C1产物的选择性。理论计算表明,PdInBi/C NPs的定制电子结构显著降低了EGOR中速率决定步骤的能垒,提高了C - C键的裂解效率。
{"title":"Synergistic p-d hybridization in ultrafine PdInBi/C nanoparticles enabling efficient C–C bond cleavage for ethylene glycol electrooxidation","authors":"Yawei Li , Yuanhang Ma , Arslan Hameed , Xiao Chen , Tingting Fan , Yuyan Tang , Ping Chen , Shoujie Liu , Yi Xiao , Peng Li","doi":"10.1016/j.jechem.2025.12.001","DOIUrl":"10.1016/j.jechem.2025.12.001","url":null,"abstract":"<div><div>The development of highly efficient electrocatalysts for the ethylene glycol oxidation reaction (EGOR) is pivotal to advancing direct ethylene glycol fuel cells (DEGFCs). Herein, we present a one-pot synthesis of ultrafine PdInBi nanoparticles supported on carbon (PdInBi/C NPs), which exhibit superior catalytic properties. The strategic incorporation of indium and bismuth facilitates strong <em>p</em>-<em>d</em> orbital hybridization with palladium, effectively modulating its electronic structure. Meanwhile, the introduction of the oxyphilic bismuth component enhances hydroxide (OH<sup>−</sup>) adsorption on the catalyst surface. Additionally, the ultrafine particle size promotes extensive exposure of active sites, further contributing to the enhanced electrocatalytic performance. In alkaline media, the PdInBi/C catalyst delivers an exceptional mass activity of 15.53 A mg<sub>Pd</sub><sup>−1</sup>, which is 19.6 times higher than that of commercial Pd/C. Furthermore, it exhibits a remarkable electrochemically active surface area (ECSA) of 90.18 m<sup>2</sup> g<sup>−1</sup> and strong resistance to CO poisoning. Notably, in situ Fourier-transform infrared (FTIR) spectroscopy reveals that PdInBi/C NPs effectively suppress the formation and adsorption of CO intermediates and enhance C1 product selectivity. Theoretical calculations reveal that the tailored electronic structure of PdInBi/C NPs significantly lowers the energy barrier of the rate-determining step in EGOR and enhances C–C bond cleavage efficiency.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 576-583"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2025-11-22DOI: 10.1016/j.jechem.2025.11.021
Jingyuan Zhao , Yan Wang , Misheng Cai , Lili Xie , Hewu Wang
Predicting battery health with accuracy and interpretability has become a grand challenge at the intersection of electrochemistry, artificial intelligence, and sustainable energy. Conventional data-driven and physics-based methods remain constrained by nonlinear, coupled, and heterogeneous battery dynamics that limit generalization across chemistries, duty cycles, and environments. Recent breakthroughs in large language models (LLMs) and foundation-model artificial intelligence introduce a paradigm shift—enabling machines to learn from multimodal signals, encode physical laws, and reason adaptively across scales. This review unifies these advances into ten foundational methodologies that delineate the emerging landscape of intelligent battery prognostics: transfer learning, knowledge augmentation, physics-informed and explainable intelligence, ensemble fusion, causal reasoning, continual adaptation, multi-agent coordination, digital-twin coupling, and the pursuit of artificial general intelligence. Together, these dimensions redefine batteries from passive electrochemical devices into cognitive energy systems—self-optimizing, trustworthy, and responsive to uncertainty. Framed within the broader evolution toward Industry 5.0, we chart a roadmap for autonomous battery management that fuses physics, data, and reasoning, establishing artificial intelligence as a scientific and technological cornerstone for the next generation of resilient, adaptive, and sustainable electrification.
{"title":"Large language models for battery prognostics","authors":"Jingyuan Zhao , Yan Wang , Misheng Cai , Lili Xie , Hewu Wang","doi":"10.1016/j.jechem.2025.11.021","DOIUrl":"10.1016/j.jechem.2025.11.021","url":null,"abstract":"<div><div>Predicting battery health with accuracy and interpretability has become a grand challenge at the intersection of electrochemistry, artificial intelligence, and sustainable energy. Conventional data-driven and physics-based methods remain constrained by nonlinear, coupled, and heterogeneous battery dynamics that limit generalization across chemistries, duty cycles, and environments. Recent breakthroughs in large language models (LLMs) and foundation-model artificial intelligence introduce a paradigm shift—enabling machines to learn from multimodal signals, encode physical laws, and reason adaptively across scales. This review unifies these advances into ten foundational methodologies that delineate the emerging landscape of intelligent battery prognostics: transfer learning, knowledge augmentation, physics-informed and explainable intelligence, ensemble fusion, causal reasoning, continual adaptation, multi-agent coordination, digital-twin coupling, and the pursuit of artificial general intelligence. Together, these dimensions redefine batteries from passive electrochemical devices into cognitive energy systems—self-optimizing, trustworthy, and responsive to uncertainty. Framed within the broader evolution toward Industry 5.0, we chart a roadmap for autonomous battery management that fuses physics, data, and reasoning, establishing artificial intelligence as a scientific and technological cornerstone for the next generation of resilient, adaptive, and sustainable electrification.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 159-177"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2025-11-20DOI: 10.1016/j.jechem.2025.11.019
Shuang Li , Zhan Wang , Qilin Feng , Yun Zheng , Yinan Liu , Chencheng Xu , Zhicheng Ju , Quanchao Zhuang , Jiangmin Jiang , Kai Wu , Huaiyu Shao , Xiaogang Zhang
Silicon oxide (SiOx) anodes have high energy density but suffer from severe irreversible active lithium loss and large volume changes, leading to low initial Coulombic efficiency (ICE) and an unstable solid electrolyte interphase (SEI), causing inferior cycling stability. Herein, we present a chemically prelithiation-regulated interfacial strategy via chemical prelithiation of SiOx followed by spontaneous reaction with ZrO(NO3)2 reagents to in situ reconstruct SEI on the surface of the SiOx anode. The designed gradient-structured SEI features an inorganic-rich inner layer (Li3N/ZrO2) for ultra-high mechanical strength and fast ion conduction, together with an organic/LiF-rich outer layer for elastic buffering, thereby maintaining the structural integrity of the electrode. This design simultaneously enables thermodynamically driven lithium compensation, the optimized SiOx anode achieving a high ICE (96.3 %), improved Li+ diffusion kinetics and cycling performance. Moreover, a 0.74 Ah pouch full battery with a ZNP-SiOx anode and NCM811 cathode is assembled and exhibits an exceptional capacity retention of 98.0 % after 50 cycles. This study highlights the essential role of chemical prelithiation and SEI reconstruction engineering in achieving high ICE and stable applicability of LIBs.
{"title":"Chemically prelithiation-regulated gradient-structured SEI with mechanical adaptability enables highly stable SiOx anodes for lithium-ion batteries","authors":"Shuang Li , Zhan Wang , Qilin Feng , Yun Zheng , Yinan Liu , Chencheng Xu , Zhicheng Ju , Quanchao Zhuang , Jiangmin Jiang , Kai Wu , Huaiyu Shao , Xiaogang Zhang","doi":"10.1016/j.jechem.2025.11.019","DOIUrl":"10.1016/j.jechem.2025.11.019","url":null,"abstract":"<div><div>Silicon oxide (SiO<em><sub>x</sub></em>) anodes have high energy density but suffer from severe irreversible active lithium loss and large volume changes, leading to low initial Coulombic efficiency (ICE) and an unstable solid electrolyte interphase (SEI), causing inferior cycling stability. Herein, we present a chemically prelithiation-regulated interfacial strategy <em>via</em> chemical prelithiation of SiO<em><sub>x</sub></em> followed by spontaneous reaction with ZrO(NO<sub>3</sub>)<sub>2</sub> reagents to in situ reconstruct SEI on the surface of the SiO<em><sub>x</sub></em> anode. The designed gradient-structured SEI features an inorganic-rich inner layer (Li<sub>3</sub>N/ZrO<sub>2</sub>) for ultra-high mechanical strength and fast ion conduction, together with an organic/LiF-rich outer layer for elastic buffering, thereby maintaining the structural integrity of the electrode. This design simultaneously enables thermodynamically driven lithium compensation, the optimized SiO<em><sub>x</sub></em> anode achieving a high ICE (96.3 %), improved Li<sup>+</sup> diffusion kinetics and cycling performance. Moreover, a 0.74 Ah pouch full battery with a ZNP-SiO<em><sub>x</sub></em> anode and NCM811 cathode is assembled and exhibits an exceptional capacity retention of 98.0 % after 50 cycles. This study highlights the essential role of chemical prelithiation and SEI reconstruction engineering in achieving high ICE and stable applicability of LIBs.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"115 ","pages":"Pages 139-150"},"PeriodicalIF":14.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}