Youngsang Park, Jugyoung Kim, Minwoo Jeong, Daekwon Shin, Jaegwan Jung, Hyoin Kim, Hyeonjun Jeong, Hyojung Kim, Yong-Hyun Kim, Sohee Jeong
Harvesting infrared (IR) sunlight using colloidal quantum dots (CQDs) holds significant promise for optoelectronic devices including photovoltaics (PVs) and self-powered sensors. Traditionally, Pb chalcogenides have been utilized in energy devices, but needs for RoHS compliance derive the development of Pb-free alternatives. A key challenge with Pb-free materials is the low photovoltage in devices, primarily due to recombination in surface defects and interfaces within the architectures. Here, the Pb-free CQD PVs capable of harvesting the IR light beyond the Si PVs are first presented. Designing an InAs CQD-based homojunction architecture, with n-type InAs absorbers passivated with multifunctional ligands and p-type conductive InAs inks, efficient charge extraction is achieved while suppressing interface recombination. Additionally, the IR light path is modulated to match the absorber's absorption to optimize the performance. This led to InAs PVs with absorber bandgaps ranging from 1.35 to 1.03 eV, significantly improving the open-circuit voltage from 0.05 to 0.26 V and fill factor from 29% to 50%, comparable to Pb-based PVs. The InAs IR-PVs exhibit a power conversion efficiency of 2.00% under one-sun and 0.27% with a Si filter, outperforming control ones (0.28% and 0.03%). This work provides an effective strategy for designing Pb-free, energy-independent IR optoelectronics.
{"title":"Pb-Free Infrared Harvesting Colloidal Quantum Dot Solar Cells Using n-p Homojunction Architecture","authors":"Youngsang Park, Jugyoung Kim, Minwoo Jeong, Daekwon Shin, Jaegwan Jung, Hyoin Kim, Hyeonjun Jeong, Hyojung Kim, Yong-Hyun Kim, Sohee Jeong","doi":"10.1002/aenm.202404141","DOIUrl":"https://doi.org/10.1002/aenm.202404141","url":null,"abstract":"Harvesting infrared (IR) sunlight using colloidal quantum dots (CQDs) holds significant promise for optoelectronic devices including photovoltaics (PVs) and self-powered sensors. Traditionally, Pb chalcogenides have been utilized in energy devices, but needs for RoHS compliance derive the development of Pb-free alternatives. A key challenge with Pb-free materials is the low photovoltage in devices, primarily due to recombination in surface defects and interfaces within the architectures. Here, the Pb-free CQD PVs capable of harvesting the IR light beyond the Si PVs are first presented. Designing an InAs CQD-based homojunction architecture, with <i>n</i>-type InAs absorbers passivated with multifunctional ligands and <i>p</i>-type conductive InAs inks, efficient charge extraction is achieved while suppressing interface recombination. Additionally, the IR light path is modulated to match the absorber's absorption to optimize the performance. This led to InAs PVs with absorber bandgaps ranging from 1.35 to 1.03 eV, significantly improving the open-circuit voltage from 0.05 to 0.26 V and fill factor from 29% to 50%, comparable to Pb-based PVs. The InAs IR-PVs exhibit a power conversion efficiency of 2.00% under one-sun and 0.27% with a Si filter, outperforming control ones (0.28% and 0.03%). This work provides an effective strategy for designing Pb-free, energy-independent IR optoelectronics.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"36 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rosario Vidal, Noora Lamminen, Ville Holappa, Jaume-Adrià Alberola-Borràs, Iván P. Franco, G. Krishnamurthy Grandhi, Paola Vivo
The development of eco-friendly indoor photovoltaics (IPVs) for Internet-of-Things (IoT) devices is booming. Emerging IPVs, especially those based on lead halide perovskites (LHPs), outperform the industry standard of amorphous hydrogenated silicon (a-Si:H). However, the toxic lead in LHPs drives the search for safer alternatives. Perovskite-inspired materials (PIMs) containing bismuth (Bi) and antimony (Sb) have shown promise, achieving indoor power conversion efficiencies (PCE) approaching 10% despite early research stages. This is promising due to their eco-friendlier light-harvesting layers compared to LHPs. Yet, the environmental footprint of pnictogen-based PIM over their lifecycle remains unassessed. This study conducts a life-cycle assessment (LCA) of the best-performing Sb- and Bi-PIMs, considering PCE, raw material availability, energy consumption, and waste generation. It is find that PCE plays a decisive role in identifying the PIM for IPVs with minimized environmental impact, namely a Bi-Sb alloy. Extended LCA simulations for industrial-scale processing show that the most promising Bi-PIM has a reduced environmental burden compared to a-Si:H. It is also explore challenges and solutions for enhancing Bi-and Sb-PIMs’ sustainability. Overall, this study provides the first evidence of the potential of pnictogen-based PIMs as a sustainable IPV technology, addressing whether lead-free PIMs are truly eco-friendly, thus contributing toward battery-less IoT applications.
{"title":"Assessing the Environmental Impact of Pnictogen-based Perovskite-Inspired Materials for Indoor Photovoltaics","authors":"Rosario Vidal, Noora Lamminen, Ville Holappa, Jaume-Adrià Alberola-Borràs, Iván P. Franco, G. Krishnamurthy Grandhi, Paola Vivo","doi":"10.1002/aenm.202403981","DOIUrl":"https://doi.org/10.1002/aenm.202403981","url":null,"abstract":"The development of eco-friendly indoor photovoltaics (IPVs) for Internet-of-Things (IoT) devices is booming. Emerging IPVs, especially those based on lead halide perovskites (LHPs), outperform the industry standard of amorphous hydrogenated silicon (a-Si:H). However, the toxic lead in LHPs drives the search for safer alternatives. Perovskite-inspired materials (PIMs) containing bismuth (Bi) and antimony (Sb) have shown promise, achieving indoor power conversion efficiencies (PCE) approaching 10% despite early research stages. This is promising due to their eco-friendlier light-harvesting layers compared to LHPs. Yet, the environmental footprint of pnictogen-based PIM over their lifecycle remains unassessed. This study conducts a life-cycle assessment (LCA) of the best-performing Sb- and Bi-PIMs, considering PCE, raw material availability, energy consumption, and waste generation. It is find that PCE plays a decisive role in identifying the PIM for IPVs with minimized environmental impact, namely a Bi-Sb alloy. Extended LCA simulations for industrial-scale processing show that the most promising Bi-PIM has a reduced environmental burden compared to a-Si:H. It is also explore challenges and solutions for enhancing Bi-and Sb-PIMs’ sustainability. Overall, this study provides the first evidence of the potential of pnictogen-based PIMs as a sustainable IPV technology, addressing whether lead-free PIMs are truly eco-friendly, thus contributing toward battery-less IoT applications.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"51 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dandan Li, Ying‐Jie Zhu, Long Cheng, Sida Xie, Han‐Ping Yu, Wei Zhang, Zhenming Xu, Ming‐Guo Ma, Heng Li
Achieving both high iodine loading cathode and high Zn anode depth of discharge (DOD) is pivotal to unlocking the full potential of energy‐dense Zn‐I2 batteries. However, this combination exacerbates the detrimental shuttle effect of polyiodide intermediates, significantly impairing the battery's reversibility and stability. Herein, this study reports an advanced high‐loading iodine cathode (denoted as MX‐AB@I) enabled by a multifunctional Ti3C2Tx MXene modulator, which presents high stability and energy density in Zn‐I2 batteries. Through comprehensive experimental and theoretical analyses, the intrinsic regulating mechanisms are elucidated by which the MXene modulator effectively suppresses polyiodide shuttling, enhances iodine conversion kinetics, and dramatically improves Zn anode reversibility. With the aid of the MXene modulator, the MX‐AB@I composite cathode achieves a high iodine mass loading of 23 mg cm−2 and realizes a practically high areal capacity of 4.0 mAh cm−2. When paired with a thin Zn anode (10 µm), this configuration realizes a high Zn DOD of 78.7% and a high energy density of 171.3 Wh kg−1, surpassing the majority of Zn‐I2 battery systems reported in the literature. This study presents an effective approach to designing high‐loading iodine cathodes for Zn‐I2 batteries by leveraging MXene modulators to regulate critical electrochemical reaction processes.
{"title":"A MXene Modulator Enabled High‐Loading Iodine Composite Cathode for Stable and High‐Energy‐Density Zn‐I2 Battery","authors":"Dandan Li, Ying‐Jie Zhu, Long Cheng, Sida Xie, Han‐Ping Yu, Wei Zhang, Zhenming Xu, Ming‐Guo Ma, Heng Li","doi":"10.1002/aenm.202404426","DOIUrl":"https://doi.org/10.1002/aenm.202404426","url":null,"abstract":"Achieving both high iodine loading cathode and high Zn anode depth of discharge (DOD) is pivotal to unlocking the full potential of energy‐dense Zn‐I<jats:sub>2</jats:sub> batteries. However, this combination exacerbates the detrimental shuttle effect of polyiodide intermediates, significantly impairing the battery's reversibility and stability. Herein, this study reports an advanced high‐loading iodine cathode (denoted as MX‐AB@I) enabled by a multifunctional Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub>T<jats:sub>x</jats:sub> MXene modulator, which presents high stability and energy density in Zn‐I<jats:sub>2</jats:sub> batteries. Through comprehensive experimental and theoretical analyses, the intrinsic regulating mechanisms are elucidated by which the MXene modulator effectively suppresses polyiodide shuttling, enhances iodine conversion kinetics, and dramatically improves Zn anode reversibility. With the aid of the MXene modulator, the MX‐AB@I composite cathode achieves a high iodine mass loading of 23 mg cm<jats:sup>−2</jats:sup> and realizes a practically high areal capacity of 4.0 mAh cm<jats:sup>−2</jats:sup>. When paired with a thin Zn anode (10 µm), this configuration realizes a high Zn DOD of 78.7% and a high energy density of 171.3 Wh kg<jats:sup>−1</jats:sup>, surpassing the majority of Zn‐I<jats:sub>2</jats:sub> battery systems reported in the literature. This study presents an effective approach to designing high‐loading iodine cathodes for Zn‐I<jats:sub>2</jats:sub> batteries by leveraging MXene modulators to regulate critical electrochemical reaction processes.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"1 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Masthead: (Adv. Energy Mater. 43/2024)","authors":"","doi":"10.1002/aenm.202470189","DOIUrl":"https://doi.org/10.1002/aenm.202470189","url":null,"abstract":"Click on the article title to read more.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"31 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jun Long, Jun Yin, Fuhua Yang, Guangmin Zhou, Hui-Ming Cheng, Wanlin Guo, Ling Qiu
The vast energy stored in the ocean, which receives an average solar power of ≈60 000 TW per year, surpasses human energy consumption by three orders of magnitude. Harnessing even a small fraction of it holds great promise in addressing global energy and water crises. Here, an integrated device that achieves unprecedented power density up to 1.1 W m−2 with excellent stability through a salinity concentration gradient induced by solar evaporation, while simultaneously producing clean water at a rate of 1.25 kg m−2 h−1 under one sun irradiation is presented. The remarkable electricity generation capability stems from the unique interlayer structure of polyaniline-graphene oxide-MnO2 (PANI@GO/MnO2) electrodes, enabling the recovery of electrochemical potentials from a wide range of ion salinity concentrations within the device and the additional Donnan potential generated by the anion-exchange membrane. Furthermore, periodic flipping of the device effectively reactivates the electrodes and suppresses salt accumulation, enabling long-term operation. Notably, a prototype device of 8 × 25 cm2 exhibits a short-circuit current of 10 mA and an open-circuit voltage of 10.2 V, as well as a clean water production rate of 24.8 g per hour. These findings shed light on the reliable technology for power and freshwater supply in marine environments.
海洋中蕴藏着巨大的能量，每年平均接收的太阳能≈60 000 太瓦，超过人类能源消耗的三个数量级。即使是利用其中的一小部分，也有望解决全球能源和水资源危机。本文介绍了一种集成装置，该装置通过太阳蒸发诱导的盐度浓度梯度，实现了前所未有的高达 1.1 W m-2 的功率密度和出色的稳定性，同时在一个太阳照射下以 1.25 kg m-2 h-1 的速度生产清洁水。其卓越的发电能力源于聚苯胺-氧化石墨烯-二氧化锰（PANI@GO/MnO2）电极独特的层间结构，这种结构使其能够从装置内广泛的离子盐度浓度范围内恢复电化学电位，并通过阴离子交换膜产生额外的唐南电位。此外，定期翻转装置可有效地重新激活电极并抑制盐分积累，从而实现长期运行。值得注意的是，一个 8 × 25 平方厘米的原型装置显示出 10 mA 的短路电流和 10.2 V 的开路电压，以及每小时 24.8 克的净水生产率。这些发现为在海洋环境中提供电力和淡水的可靠技术提供了启示。
{"title":"A High-Efficiency System for Long-Term Salinity-Gradient Energy Harvesting and Simultaneous Solar Steam Generation","authors":"Jun Long, Jun Yin, Fuhua Yang, Guangmin Zhou, Hui-Ming Cheng, Wanlin Guo, Ling Qiu","doi":"10.1002/aenm.202303476","DOIUrl":"https://doi.org/10.1002/aenm.202303476","url":null,"abstract":"The vast energy stored in the ocean, which receives an average solar power of ≈60 000 TW per year, surpasses human energy consumption by three orders of magnitude. Harnessing even a small fraction of it holds great promise in addressing global energy and water crises. Here, an integrated device that achieves unprecedented power density up to 1.1 W m<sup>−2</sup> with excellent stability through a salinity concentration gradient induced by solar evaporation, while simultaneously producing clean water at a rate of 1.25 kg m<sup>−2</sup> h<sup>−1</sup> under one sun irradiation is presented. The remarkable electricity generation capability stems from the unique interlayer structure of polyaniline-graphene oxide-MnO<sub>2</sub> (PANI@GO/MnO<sub>2</sub>) electrodes, enabling the recovery of electrochemical potentials from a wide range of ion salinity concentrations within the device and the additional Donnan potential generated by the anion-exchange membrane. Furthermore, periodic flipping of the device effectively reactivates the electrodes and suppresses salt accumulation, enabling long-term operation. Notably, a prototype device of 8 × 25 cm<sup>2</sup> exhibits a short-circuit current of 10 mA and an open-circuit voltage of 10.2 V, as well as a clean water production rate of 24.8 g per hour. These findings shed light on the reliable technology for power and freshwater supply in marine environments.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"222 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Catherine G. Haslam, Janis K. Eckhardt, Abhinand Ayyaswamy, Bairav S. Vishnugopi, Till Fuchs, Daniel W. Liao, Neil P. Dasgupta, Partha P. Mukherjee, Jürgen Janek, Jeff Sakamoto
Anode‐free manufacturing of solid‐state batteries (SSBs) shows promise to maximize energy density by eliminating excess lithium (Li) and simplifying battery production. However, high reversibility during discharge (stripping of Li) is necessary for long‐lifetime SSBs with a limited Li reservoir. Further, the plastic flow of Li changes depending on the Li thickness, leading to possible differences in discharge performance under stack pressure. This work investigates the pressure‐dependent discharge performance of anode‐free manufactured SSBs with in situ plated Li and compares the performance to that of conventional thick Li foil cells. Distinct stripping behavior is observed at low pressures (0–1 MPa), where Li diffusivity and initial interfacial contact may control accessible capacity, compared to high pressures (3–10 MPa) where mechanical deformation of Li likely governs stripping behavior. Analysis of impedance spectra collected during stripping shows that additional stack pressure delays the formation of deep, as opposed to lateral, voids in the Li anode. These results provide insights to guide the transition from thick Li foil anodes to anode‐free manufactured SSBs.
{"title":"Evaluating Pressure‐dependent Discharge Behavior of Foil Versus In situ Plated Lithium Metal Anodes in Solid‐State Batteries","authors":"Catherine G. Haslam, Janis K. Eckhardt, Abhinand Ayyaswamy, Bairav S. Vishnugopi, Till Fuchs, Daniel W. Liao, Neil P. Dasgupta, Partha P. Mukherjee, Jürgen Janek, Jeff Sakamoto","doi":"10.1002/aenm.202403614","DOIUrl":"https://doi.org/10.1002/aenm.202403614","url":null,"abstract":"Anode‐free manufacturing of solid‐state batteries (SSBs) shows promise to maximize energy density by eliminating excess lithium (Li) and simplifying battery production. However, high reversibility during discharge (stripping of Li) is necessary for long‐lifetime SSBs with a limited Li reservoir. Further, the plastic flow of Li changes depending on the Li thickness, leading to possible differences in discharge performance under stack pressure. This work investigates the pressure‐dependent discharge performance of anode‐free manufactured SSBs with in situ plated Li and compares the performance to that of conventional thick Li foil cells. Distinct stripping behavior is observed at low pressures (0–1 MPa), where Li diffusivity and initial interfacial contact may control accessible capacity, compared to high pressures (3–10 MPa) where mechanical deformation of Li likely governs stripping behavior. Analysis of impedance spectra collected during stripping shows that additional stack pressure delays the formation of deep, as opposed to lateral, voids in the Li anode. These results provide insights to guide the transition from thick Li foil anodes to anode‐free manufactured SSBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"5 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Suriya Venkatesan, Jens Mitzel, Sambal Shashank Ambu, Tobias Morawietz, Indro Biswas, Oscar Recalde, Esmaeil Adabifiroozjaei, Leopoldo Molina-Luna, Deven P. Estes, Karsten Wegner, Pawel Gazdzicki, Aldo Saul Gago, Kaspar Andreas Friedrich
Proton exchange membrane water electrolysis (PEMWE) is a promising technology for green hydrogen production, although its widespread development with state-of-the-art loadings is threatened by the scarcity of iridium (Ir). Homogeneous dispersion of Ir in an immiscible electro-ceramic matrix can enhance catalytic mass activity and structural stability. The study presents IrySn0.9(1−y)Sb0.1(1−y)Ox solid solutions produced by highly scalable flame spray pyrolysis (FSP) process as efficient anode electrocatalysts for PEMWE, containing only 0.2 mg cm−2 of Ir in the catalyst layer (CL). Intense mixing of metal vapor and large thermal gradients in the precursor-derived high-temperature flame aids stabilizing sub-nanoscale entropic mixing within self-preserved 4–6 nm particles. Detailed investigations confirm that the one-step prepared solid solution electrocatalysts exhibit up to fourfold higher activity toward the oxygen evolution reaction (OER) compared to Ir black. The anode of a PEMWE utilizing this catalyst exhibits high performance and stability over 2000 h but with tenfold lower Ir loading than the state-of-art.
质子交换膜电解水技术（PEMWE）是一种前景广阔的绿色制氢技术，但由于铱（Ir）的稀缺，该技术在最先进负载条件下的广泛发展受到了威胁。将铱均匀地分散在不相溶的电陶瓷基体中可以提高催化质量活性和结构稳定性。本研究介绍了通过高度可扩展的火焰喷射热解（FSP）工艺制备的 IrySn0.9(1-y)Sb0.1(1-y)Ox 固溶体，作为 PEMWE 的高效阳极电催化剂，催化剂层（CL）中仅含有 0.2 mg cm-2 的 Ir。在前驱体产生的高温火焰中，金属蒸气的强烈混合和较大的热梯度有助于稳定自保留的 4-6 纳米颗粒内的亚纳米级熵混合。详细研究证实，一步法制备的固溶体电催化剂在氧进化反应（OER）中的活性比 Ir black 高出四倍。使用这种催化剂的 PEMWE 阳极在 2000 小时内表现出高性能和高稳定性，但铱负载量却比最先进的催化剂低十倍。
{"title":"Rapid Scalable One-step Production of Catalysts for Low-Iridium Content Proton Exchange Membrane Water Electrolyzers","authors":"Suriya Venkatesan, Jens Mitzel, Sambal Shashank Ambu, Tobias Morawietz, Indro Biswas, Oscar Recalde, Esmaeil Adabifiroozjaei, Leopoldo Molina-Luna, Deven P. Estes, Karsten Wegner, Pawel Gazdzicki, Aldo Saul Gago, Kaspar Andreas Friedrich","doi":"10.1002/aenm.202401659","DOIUrl":"https://doi.org/10.1002/aenm.202401659","url":null,"abstract":"Proton exchange membrane water electrolysis (PEMWE) is a promising technology for green hydrogen production, although its widespread development with state-of-the-art loadings is threatened by the scarcity of iridium (Ir). Homogeneous dispersion of Ir in an immiscible electro-ceramic matrix can enhance catalytic mass activity and structural stability. The study presents Ir<sub>y</sub>Sn<sub>0.9(1−</sub><i><sub>y</sub></i><sub>)</sub>Sb<sub>0.1(1−</sub><i><sub>y</sub></i><sub>)</sub>O<i><sub>x</sub></i> solid solutions produced by highly scalable flame spray pyrolysis (FSP) process as efficient anode electrocatalysts for PEMWE, containing only 0.2 mg cm<sup>−2</sup> of Ir in the catalyst layer (CL). Intense mixing of metal vapor and large thermal gradients in the precursor-derived high-temperature flame aids stabilizing sub-nanoscale entropic mixing within self-preserved 4–6 nm particles. Detailed investigations confirm that the one-step prepared solid solution electrocatalysts exhibit up to fourfold higher activity toward the oxygen evolution reaction (OER) compared to Ir black. The anode of a PEMWE utilizing this catalyst exhibits high performance and stability over 2000 h but with tenfold lower Ir loading than the state-of-art.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"17 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xueting Zhao, Wei Sun, Xi Liu, Zhiwen Lu, Kai Chen, Jiyuan Gao, Junxiang Chen, Hao Zhang, Zhenhai Wen
Methanol as a hydrogen carrier provides a practical solution for H2 storage and transport, but traditional reforming faces challenges with low efficiency, CO2 emissions, and the need for specialized infrastructure. In this study, a reliable approach for fabricating low‐cost electrodes is presented by in situ growing high‐entropy phosphide nanoparticles on nickel foam (FeCoNiCuMnP/NF). This cost‐effective design is specifically engineered for alkaline methanol oxidation reactions (MOR), achieving a current density of 10 mA cm−2 at an applied voltage of only 1.32 V, while also demonstrating exceptional selectivity for formate products. Advanced Monte Carlo (ML‐MC) simulations identify copper as the predominant surface element and highlight phosphorus coordination as a key factor in enhancing catalytic activity. The field is advanced with a pioneering hybrid acid/alkali flow electrolyzer system, integrating FeCoNiCuMnP/NF anode and commercial RuIr/Ti cathode to enable indirect hydrogen liberation from methanol. This system requires an electrolytic voltage as low as 0.58 V to achieve a current density of 10 mA cm−2 and remains stable for hydrogen liberation over 300 h of operation. This achievement not only offers a highly efficient alternative to indirectly liberate H2 stored in methanol but also establishes a new benchmark for sustainable and economically viable H2 production.
甲醇作为氢载体为 H2 的储存和运输提供了一种实用的解决方案，但传统的重整工艺面临着效率低、二氧化碳排放量大以及需要专门基础设施等挑战。本研究通过在泡沫镍（FeCoNiCuMnP/NF）上原位生长高熵磷化物纳米粒子，提出了一种制造低成本电极的可靠方法。这种经济高效的设计专为碱性甲醇氧化反应 (MOR) 而设计，在仅 1.32 V 的外加电压下就能达到 10 mA cm-2 的电流密度，同时还表现出对甲酸产物的卓越选择性。先进的蒙特卡罗（ML-MC）模拟确定铜是主要的表面元素，并强调磷配位是提高催化活性的关键因素。酸碱混合流动电解槽系统开创了这一领域的先河，该系统集成了 FeCoNiCuMnP/NF 阳极和商用 RuIr/Ti 阴极，可从甲醇中间接析出氢气。该系统所需的电解电压低至 0.58 V，电流密度为 10 mA cm-2，并能在 300 小时的运行过程中保持稳定的析氢性能。这一成果不仅为间接释放储存在甲醇中的氢气提供了一种高效的替代方法，而且为可持续的、经济上可行的氢气生产确立了新的基准。
{"title":"High‐Entropy Phosphide Catalyst‐Based Hybrid Electrolyzer: A Cost‐Effective and Mild‐Condition Approach for H2 Liberation from Methanol","authors":"Xueting Zhao, Wei Sun, Xi Liu, Zhiwen Lu, Kai Chen, Jiyuan Gao, Junxiang Chen, Hao Zhang, Zhenhai Wen","doi":"10.1002/aenm.202404114","DOIUrl":"https://doi.org/10.1002/aenm.202404114","url":null,"abstract":"Methanol as a hydrogen carrier provides a practical solution for H<jats:sub>2</jats:sub> storage and transport, but traditional reforming faces challenges with low efficiency, CO<jats:sub>2</jats:sub> emissions, and the need for specialized infrastructure. In this study, a reliable approach for fabricating low‐cost electrodes is presented by in situ growing high‐entropy phosphide nanoparticles on nickel foam (FeCoNiCuMnP/NF). This cost‐effective design is specifically engineered for alkaline methanol oxidation reactions (MOR), achieving a current density of 10 mA cm<jats:sup>−2</jats:sup> at an applied voltage of only 1.32 V, while also demonstrating exceptional selectivity for formate products. Advanced Monte Carlo (ML‐MC) simulations identify copper as the predominant surface element and highlight phosphorus coordination as a key factor in enhancing catalytic activity. The field is advanced with a pioneering hybrid acid/alkali flow electrolyzer system, integrating FeCoNiCuMnP/NF anode and commercial RuIr/Ti cathode to enable indirect hydrogen liberation from methanol. This system requires an electrolytic voltage as low as 0.58 V to achieve a current density of 10 mA cm<jats:sup>−2</jats:sup> and remains stable for hydrogen liberation over 300 h of operation. This achievement not only offers a highly efficient alternative to indirectly liberate H<jats:sub>2</jats:sub> stored in methanol but also establishes a new benchmark for sustainable and economically viable H<jats:sub>2</jats:sub> production.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"247 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jianpei Feng, Chun Hong Mak, Guohua Jia, Bin Han, Hsin‐Hui Shen, Shella Permatasari Santoso, Ji‐Jung Kai, Mingjian Yuan, Haisheng Song, Juan Carlos Colmenares, Hsien‐Yi Hsu
{"title":"Unlocking Interfacial Interactions of In Situ Grown Multidimensional Bismuth‐Based Perovskite Heterostructures for Photocatalytic Hydrogen Evolution (Adv. Energy Mater. 43/2024)","authors":"Jianpei Feng, Chun Hong Mak, Guohua Jia, Bin Han, Hsin‐Hui Shen, Shella Permatasari Santoso, Ji‐Jung Kai, Mingjian Yuan, Haisheng Song, Juan Carlos Colmenares, Hsien‐Yi Hsu","doi":"10.1002/aenm.202470187","DOIUrl":"https://doi.org/10.1002/aenm.202470187","url":null,"abstract":"","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"21 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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