Biomass-derived hard carbons (HCs) present significant opportunities for low-cost and high-performance sodium-ion batteries, but face the dilemma of low specific capacity and inadequate cycling stability. The exploration of biomass-derived HCs with electron-rich heteroatoms and nanopores structure has the potential to enhance the electrochemical performance by providing more active sites, expanding graphite spacing, and facilitating sodium ions transport. However, designing biomass-derived HCs that incorporate both electron-rich heteroatoms and nanopores remains a challenge. Herein, we report the use of microorganism’s bioactivity and cell membranes as space-confined reactors to create N and P co-doped HCs with a nanopore structure. And the influence of microorganism bioactivity on the preparation of HCs is explored. As expected, the yeast cell-derived hard carbons in glucose solution (YHCs-G) exhibit an impressive initial coulombic efficiency (ICE) of 84.6%, a remarkable reversible capacity of 320.3 mAh g-1 at 0.1 C, and favorable cycling stability, retaining 77.5% capacity at 10 C even after 15,000 cycles, with only a 0.0015% capacity decay per cycle. Furthermore, the sodium storage mechanism of “adsorption-intercalation-pore filling” is evidenced by charge-discharges curves, in-situ Raman spectroscopy, in-situ X-ray diffraction and galvanostatic intermittent titration technique. This study offers a new insight and strategy for preparing N and P co-doped biomass-derived hard carbons with nanopore structure, highlighting the potential use of microorganisms and their bioactivity for stable and fast-charging of HCs in sodium-ion batteries.
{"title":"Microbially Glycolysis-Regulated Hard Carbons for Sodium-Ion Batteries","authors":"Guilin Feng, Xu Yang, Xiaohong Liu, Yongbin Wang, Yanting Xie, Panpan Dong, Xingxing Jiao, Chunliu Xu, Junmei Zhao, Yong-Sheng Hu, Weiqing Yang","doi":"10.1016/j.nanoen.2025.110728","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110728","url":null,"abstract":"Biomass-derived hard carbons (HCs) present significant opportunities for low-cost and high-performance sodium-ion batteries, but face the dilemma of low specific capacity and inadequate cycling stability. The exploration of biomass-derived HCs with electron-rich heteroatoms and nanopores structure has the potential to enhance the electrochemical performance by providing more active sites, expanding graphite spacing, and facilitating sodium ions transport. However, designing biomass-derived HCs that incorporate both electron-rich heteroatoms and nanopores remains a challenge. Herein, we report the use of microorganism’s bioactivity and cell membranes as space-confined reactors to create N and P co-doped HCs with a nanopore structure. And the influence of microorganism bioactivity on the preparation of HCs is explored. As expected, the yeast cell-derived hard carbons in glucose solution (YHCs-G) exhibit an impressive initial coulombic efficiency (ICE) of 84.6%, a remarkable reversible capacity of 320.3 mAh g<sup>-1</sup> at 0.1<!-- --> <!-- -->C, and favorable cycling stability, retaining 77.5% capacity at 10<!-- --> <!-- -->C even after 15,000 cycles, with only a 0.0015% capacity decay per cycle. Furthermore, the sodium storage mechanism of “adsorption-intercalation-pore filling” is evidenced by charge-discharges curves, <em>in-situ</em> Raman spectroscopy, <em>in-situ</em> X-ray diffraction and galvanostatic intermittent titration technique. This study offers a new insight and strategy for preparing N and P co-doped biomass-derived hard carbons with nanopore structure, highlighting the potential use of microorganisms and their bioactivity for stable and fast-charging of HCs in sodium-ion batteries.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"65 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050436","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}
In light of the accelerated advancement of metaverse technologies and the growing necessity for sophisticated Human-machine interaction (HMI), the need for accurate and reliable motion detection systems has become more critical, especially in healthcare and rehabilitation. Traditional motion detection systems often face challenges such as limited portability, dependence on external power sources, and insufficient accuracy in complex environments. To address these issues, this paper presents the development of an AI-enabled self-sustaining sensing lower-limb motion detection system (SS-LMD) designed for HMI, such as rehabilitation training in the metaverse. The SS-LMD system comprises wearable TENG-based sensors that monitor lower-limb muscle movements, assess different deep learning algorithms and select an advanced real-time data processing method with a Double long short-term memory model (LSTM). The system achieves 99.8% accuracy in motion recognition and operates without external power sources, enhancing portability and user convenience. Through usability testing verified the practical application of the SS-LMD system for fitness and rehabilitation training in metaverse scenarios for users of different ages. In addition, a digital twin-based monitoring platform was developed using 5 G, database and visualization technologies to observe user status in real-time. The SS-LMD has exhibited exemplary capabilities in self-sustaining sensing and real-time capture of lower-limb motion information, thereby providing accurate motion feedback. This innovation represents a significant advance in wearable technology and holds great promise in metaverse applications in the fields of virtual fitness, smart healthcare and elderly rehabilitation.
{"title":"An AI-enabled self-sustaining sensing lower-limb motion detection system for HMI in the metaverse","authors":"Hongyu Chen, Deqiang He, Kaixiao Xiong, Xinyi Zhao, Zheng Fang, Rui Zou, Jinyi Zhi, Zutao Zhang","doi":"10.1016/j.nanoen.2025.110724","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110724","url":null,"abstract":"In light of the accelerated advancement of metaverse technologies and the growing necessity for sophisticated Human-machine interaction (HMI), the need for accurate and reliable motion detection systems has become more critical, especially in healthcare and rehabilitation. Traditional motion detection systems often face challenges such as limited portability, dependence on external power sources, and insufficient accuracy in complex environments. To address these issues, this paper presents the development of an AI-enabled self-sustaining sensing lower-limb motion detection system (SS-LMD) designed for HMI, such as rehabilitation training in the metaverse. The SS-LMD system comprises wearable TENG-based sensors that monitor lower-limb muscle movements, assess different deep learning algorithms and select an advanced real-time data processing method with a Double long short-term memory model (LSTM). The system achieves 99.8% accuracy in motion recognition and operates without external power sources, enhancing portability and user convenience. Through usability testing verified the practical application of the SS-LMD system for fitness and rehabilitation training in metaverse scenarios for users of different ages. In addition, a digital twin-based monitoring platform was developed using 5<!-- --> <!-- -->G, database and visualization technologies to observe user status in real-time. The SS-LMD has exhibited exemplary capabilities in self-sustaining sensing and real-time capture of lower-limb motion information, thereby providing accurate motion feedback. This innovation represents a significant advance in wearable technology and holds great promise in metaverse applications in the fields of virtual fitness, smart healthcare and elderly rehabilitation.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"9 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050439","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}
Solar-driven interfacial evaporation with photothermal membranes/fabrics is considered as an efficient and scalable strategy to produce fresh-water from seawater. While its practical application is restricted by some problems including sunlight reflection/scattering loss, high evaporation enthalpy, and organic contamination from seawater. To solve these problems, inspired by black fish-scale, we report a biomimetic design of two-dimensional photothermal fabric for efficient seawater evaporation. The photothermal fabrics have been prepared by in-situ polymerization of polypyrrole (PPy) nanoparticles (sizes: ~50 nm) on cotton fabric and then PPy surface modification with cellulose nanocrystal (CNCs). Cotton/PPy/CNC fabric exhibits broad-spectral (300-2500 nm) photoabsorption with a solar-absorption efficiency of ~98% due to black-fish-scale-like light-trapping effect. Like the mucus of fish-scale, CNCs coating have abundant surface groups (such as -OH), which confers the formation of hydration layer. Hydration layer not only decreases water-evaporation enthalpy (1939.87 kJ kg−1) of Cotton/PPy/CNC fabric compared with that (2413.10 kJ kg−1, 37 °C) of pure water, but also results in super-hydrophilicity and super-oleophobicity. Subsequently, such fabric is hanging to construct an evaporator containing simulated seawater, and it has a high evaporation rate of 2.02 kg m-2 h-1 with the efficiency of 93.8% under one sun. When oily seawater is used as model, the fabric remains a high evaporation rate of 1.90 kg m-2 h-1 without oil adhesion, demonstrating good anti-fouling function. Therefore, the present bioinspired design supplies some insights for constructing efficient and anti-fouling photothermal materials.
{"title":"Bioinspired design of photothermal anti-fouling fabrics for solar-driven sustainable seawater desalination","authors":"Mengyao Wang, Jinjing Hu, Mengqi Li, Lisha Zhang, Mohsen Salimi, Majid Amidpour, Zhigang Chen","doi":"10.1016/j.nanoen.2025.110726","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110726","url":null,"abstract":"Solar-driven interfacial evaporation with photothermal membranes/fabrics is considered as an efficient and scalable strategy to produce fresh-water from seawater. While its practical application is restricted by some problems including sunlight reflection/scattering loss, high evaporation enthalpy, and organic contamination from seawater. To solve these problems, inspired by black fish-scale, we report a biomimetic design of two-dimensional photothermal fabric for efficient seawater evaporation. The photothermal fabrics have been prepared by <em>in-situ</em> polymerization of polypyrrole (PPy) nanoparticles (sizes: ~50<!-- --> <!-- -->nm) on cotton fabric and then PPy surface modification with cellulose nanocrystal (CNCs). Cotton/PPy/CNC fabric exhibits broad-spectral (300-2500<!-- --> <!-- -->nm) photoabsorption with a solar-absorption efficiency of ~98% due to black-fish-scale-like light-trapping effect. Like the mucus of fish-scale, CNCs coating have abundant surface groups (such as -OH), which confers the formation of hydration layer. Hydration layer not only decreases water-evaporation enthalpy (1939.87<!-- --> <!-- -->kJ<!-- --> <!-- -->kg<sup>−1</sup>) of Cotton/PPy/CNC fabric compared with that (2413.10<!-- --> <!-- -->kJ<!-- --> <!-- -->kg<sup>−1</sup>, 37 °C) of pure water, but also results in super-hydrophilicity and super-oleophobicity. Subsequently, such fabric is hanging to construct an evaporator containing simulated seawater, and it has a high evaporation rate of 2.02<!-- --> <!-- -->kg<!-- --> <!-- -->m<sup>-2</sup> h<sup>-1</sup> with the efficiency of 93.8% under one sun. When oily seawater is used as model, the fabric remains a high evaporation rate of 1.90<!-- --> <!-- -->kg<!-- --> <!-- -->m<sup>-2</sup> h<sup>-1</sup> without oil adhesion, demonstrating good anti-fouling function. Therefore, the present bioinspired design supplies some insights for constructing efficient and anti-fouling photothermal materials.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"25 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050321","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}
The development of efficient and stable catalysts for the neutral seawater oxygen evolution reaction (OER) is essential for sustainable hydrogen production; however, the competitive chlorine evolution reaction (CER) poses a critical challenge. Herein, nanosheet-like RuO₂@Nb₂O₅ catalysts are constructed and applied to repel Cl⁻ in seawater based on the Lewis acid-base theory. Experiments combined with density functional calculations reveal that Nb₂O₅ as a hard Lewis acid is able to promote the decomposition of H₂O molecules, and the in-situ generated OH⁻ layer significantly reduces Cl⁻ interaction. Notably, Nb₂O₅ also modulates the electronic structure of RuO₂, weakening Cl⁻ adsorption and shifting the OER pathway from the lattice oxygen mechanism to the more stable adsorbate evolution mechanism. After electrolysis for the same duration, the concentration of ClO⁻ in the electrolyte of RuO₂@Nb₂O₅ is approximately one magnitude lower than that of commercial RuO₂. The obtained RuO₂@Nb₂O₅ shows impressive OER activity in neutral seawater (pH ≈ 7.8) and displays considerable durability for up to 100 h.
{"title":"Hard Lewis acid induced chloride repulsion for durable neutral seawater electrolysis","authors":"Suyang Feng, Gai Li, Qingyi Wei, Tianjiao Wang, Yingjie Hua, Jing Li, Wenyu Wang, Peng Ling, Daoxiong Wu, Yuliang Yuan, Xinlong Tian, Zhenye Kang","doi":"10.1016/j.nanoen.2025.110714","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110714","url":null,"abstract":"The development of efficient and stable catalysts for the neutral seawater oxygen evolution reaction (OER) is essential for sustainable hydrogen production; however, the competitive chlorine evolution reaction (CER) poses a critical challenge. Herein, nanosheet-like RuO₂@Nb₂O₅ catalysts are constructed and applied to repel Cl⁻ in seawater based on the Lewis acid-base theory. Experiments combined with density functional calculations reveal that Nb₂O₅ as a hard Lewis acid is able to promote the decomposition of H₂O molecules, and the in-situ generated OH⁻ layer significantly reduces Cl⁻ interaction. Notably, Nb₂O₅ also modulates the electronic structure of RuO₂, weakening Cl⁻ adsorption and shifting the OER pathway from the lattice oxygen mechanism to the more stable adsorbate evolution mechanism. After electrolysis for the same duration, the concentration of ClO⁻ in the electrolyte of RuO₂@Nb₂O₅ is approximately one magnitude lower than that of commercial RuO₂. The obtained RuO₂@Nb₂O₅ shows impressive OER activity in neutral seawater (pH ≈ 7.8) and displays considerable durability for up to 100<!-- --> <!-- -->h.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"35 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050438","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}
Pub Date : 2025-01-27DOI: 10.1016/j.nanoen.2025.110725
Quan Zong, Bo Lv, Yifei Yu, Qilong Zhang, Shuang Zhou, Jingji Zhang, Jiangying Wang, Anqiang Pan, Guozhong Cao
The chemical environment at the electrode/electrolyte interface is critical for the zinc ions deposition behavior and water-related parasitic side reactions. In this study, histidine, with imidazole group, is proposed as a multifunctional electrolyte additive to address the issues like dendrite formation, hydrogen evolution, and corrosion. The histidine exhibits a strong preferential adsorption on the Zn(100) and Zn(101) planes, leading to the exposure of Zn(002) facet, thereby promoting the close-packed growth along (002) plane and achieving a dendrite-free deposition. The imidazole group can both accept and release protons, which regulates the interfacial proton concentration, thus effectively suppressing hydrogen evolution reaction and the formation of undesirable by-products. The Zn||Zn symmetric cell with 0.1 M histidine exhibits good cycling stability, with over 3200 h of operation at 1 mA cm⁻², far surpassing cells without the additive (short circuit after 50 h). The Zn||Cu asymmetric cells demonstrate a high Coulombic efficiency of 99.8 % over 1400 cycles. The Zn||NH4V4O10 pouch cell can be steadily operated with 80 % capacity retention after 200 cycles.
{"title":"Close-packed growth and buffer action enabling stable and reversible Zn anode","authors":"Quan Zong, Bo Lv, Yifei Yu, Qilong Zhang, Shuang Zhou, Jingji Zhang, Jiangying Wang, Anqiang Pan, Guozhong Cao","doi":"10.1016/j.nanoen.2025.110725","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110725","url":null,"abstract":"The chemical environment at the electrode/electrolyte interface is critical for the zinc ions deposition behavior and water-related parasitic side reactions. In this study, histidine, with imidazole group, is proposed as a multifunctional electrolyte additive to address the issues like dendrite formation, hydrogen evolution, and corrosion. The histidine exhibits a strong preferential adsorption on the Zn(100) and Zn(101) planes, leading to the exposure of Zn(002) facet, thereby promoting the close-packed growth along (002) plane and achieving a dendrite-free deposition. The imidazole group can both accept and release protons, which regulates the interfacial proton concentration, thus effectively suppressing hydrogen evolution reaction and the formation of undesirable by-products. The Zn||Zn symmetric cell with 0.1 M histidine exhibits good cycling stability, with over 3200 h of operation at 1 mA cm⁻², far surpassing cells without the additive (short circuit after 50 h). The Zn||Cu asymmetric cells demonstrate a high Coulombic efficiency of 99.8 % over 1400 cycles. The Zn||NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub> pouch cell can be steadily operated with 80 % capacity retention after 200 cycles.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"39 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050417","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}
Pub Date : 2025-01-27DOI: 10.1016/j.nanoen.2025.110704
Zhiqiang Qiao, Nana Li, Yaping Deng, Debin Ji, Deqiang Ji, Dandan Yuan, Weining (Wayne) Song, Zhida Li, Hongjun Wu
Utilizing greenhouse gas CO2 as the feedstock to prepare carbon-based electrode materials for energy storage system presents significant potential for both renewable energy storage and carbon mitigation. However, this approach remains technically challenging. Herein, we report the fabrication of oxygen-enriched nano-carbon cages with hierarchically porous structure via molten salt CO2 electrolysis. Electrochemical results demonstrate that these nano-carbon cages exhibit an ultrahigh specific capacitance of 334 F g-1 at 1 A g-1 in alkaline electrolyte, along with exceptional electrochemical stability, retaining 100% after 10000 cycles at 20 A g-1. Furthermore, the symmetrical supercapacitors assembled with these nano-carbon cages deliver energy densities of 9.7 and 14.9 Wh kg-1 in alkaline and neutral electrolyte, respectively, still ranking the highest level among carbon materials of the same kinds and highlighting their practical application potentials. Theoretical calculations and electrochemical assessments collectively reveal that the synthesis of nano-carbon cages is primarily driven by the controlled generation of CO, which acts as a pore-forming agent and facilitates the creation of hierarchically porous structure. This work offers a feasible route for converting CO2 into valuable carbon materials, simultaneously providing a viable alternative to traditional energy storage materials.
{"title":"Fabrication of Nano-Carbon Cages via Molten Salt CO2 Electrolysis for High-Performance Symmetrical Supercapacitor","authors":"Zhiqiang Qiao, Nana Li, Yaping Deng, Debin Ji, Deqiang Ji, Dandan Yuan, Weining (Wayne) Song, Zhida Li, Hongjun Wu","doi":"10.1016/j.nanoen.2025.110704","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110704","url":null,"abstract":"Utilizing greenhouse gas CO<sub>2</sub> as the feedstock to prepare carbon-based electrode materials for energy storage system presents significant potential for both renewable energy storage and carbon mitigation. However, this approach remains technically challenging. Herein, we report the fabrication of oxygen-enriched nano-carbon cages with hierarchically porous structure via molten salt CO<sub>2</sub> electrolysis. Electrochemical results demonstrate that these nano-carbon cages exhibit an ultrahigh specific capacitance of 334<!-- --> <!-- -->F<!-- --> <!-- -->g<sup>-1</sup> at 1<!-- --> <!-- -->A<!-- --> <!-- -->g<sup>-1</sup> in alkaline electrolyte, along with exceptional electrochemical stability, retaining 100% after 10000 cycles at 20<!-- --> <!-- -->A<!-- --> <!-- -->g<sup>-1</sup>. Furthermore, the symmetrical supercapacitors assembled with these nano-carbon cages deliver energy densities of 9.7 and 14.9<!-- --> <!-- -->Wh<!-- --> <!-- -->kg<sup>-1</sup> in alkaline and neutral electrolyte, respectively, still ranking the highest level among carbon materials of the same kinds and highlighting their practical application potentials. Theoretical calculations and electrochemical assessments collectively reveal that the synthesis of nano-carbon cages is primarily driven by the controlled generation of CO, which acts as a pore-forming agent and facilitates the creation of hierarchically porous structure. This work offers a feasible route for converting CO<sub>2</sub> into valuable carbon materials, simultaneously providing a viable alternative to traditional energy storage materials.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"28 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044464","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}
Pub Date : 2025-01-27DOI: 10.1016/j.nanoen.2025.110720
Menghan Lu, Xueke Sun, Cong Chen
Ferrocene (Fc) and its derivatives have emerged as promising materials for enhancing the performance of perovskite solar cells (PSCs), addressing key challenges related to efficiency and stability. With unique properties such as high thermal stability, robust redox behavior, and exceptional electrochemical activity, Fc derivatives facilitate effective surface defect passivation and interface modification for enhancing charge transport in PSCs. These materials mitigate interface defects, suppress nonradiative recombination, and improve moisture and thermal resistance, thus boosting the efficiency and operational lifespan of PSCs. Recent advances also demonstrate their potential as efficient hole-transporting material and stabilizers, further optimizing energy levels and light absorption. This review highlights the critical role of Fc derivatives in PSC development, detailing their applications in bulk, surface, and interfacial optimization. Additionally, it explores uncharted opportunities for functionalized Fc derivatives with tailored active sites, offering insights into their potential for advancing next-generation photovoltaic technologies.
{"title":"Ferrocene-Driven Revolution in Perovskite Photovoltaics","authors":"Menghan Lu, Xueke Sun, Cong Chen","doi":"10.1016/j.nanoen.2025.110720","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110720","url":null,"abstract":"Ferrocene (Fc) and its derivatives have emerged as promising materials for enhancing the performance of perovskite solar cells (PSCs), addressing key challenges related to efficiency and stability. With unique properties such as high thermal stability, robust redox behavior, and exceptional electrochemical activity, Fc derivatives facilitate effective surface defect passivation and interface modification for enhancing charge transport in PSCs. These materials mitigate interface defects, suppress nonradiative recombination, and improve moisture and thermal resistance, thus boosting the efficiency and operational lifespan of PSCs. Recent advances also demonstrate their potential as efficient hole-transporting material and stabilizers, further optimizing energy levels and light absorption. This review highlights the critical role of Fc derivatives in PSC development, detailing their applications in bulk, surface, and interfacial optimization. Additionally, it explores uncharted opportunities for functionalized Fc derivatives with tailored active sites, offering insights into their potential for advancing next-generation photovoltaic technologies.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"404 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044686","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}
CsPbBr3 perovskite has become a star material for triboelectric nanogenerators (TENGs) due to its excellent optoelectronic properties, dielectric properties and stability in the atmosphere. However, regulating its optoelectronic and dielectric properties through charge-directed transport and separation within TENGs has not been comprehensively explored. Herein, p-n junction is constructed to form built-in potential (Ebuilt-in) for charge-directed transport by introducing a semiconductor layer beneath the perovskite film in perovskite-TENGs, where the effect of Ebuilt-in’s direction and intensity on output performance is systematically investigated. Introducing the p-type semiconductor NiOx creates a reversed Ebuilt-in, which enhances the surface triboelectric charge density of the perovskite and achieves improved triboelectric output performance of 205 V and 43 μA cm-2 for the PVDF-CsPbBr3 TENG. Conversely, the n-type semiconductor SnO2 establishes a parallel Ebuilt-in, greatly facilitating the extraction and separation of photogenerated carriers, leading to a high current density of 1.4 mA cm-2 under illumination based on the triboelectric-photoelectric coupling effect. Moreover, the CsPbBr3-TENGs demonstrate superior stability and a broad linear response range and fast photoresponsivity, proving their potential for practical applications in various self-powered optoelectronic detection devices.
{"title":"Boosting Tribo-photovoltaic Effect in Perovskite Triboelectric Nanogenerators by Regulating Built-in Potential through p-n Junctions","authors":"Wenpei Zhao, Qiuyu Liu, Ziyang Tian, Daqing Ma, Wenrui Li, Shuhong Wang, Yuting Xie, Jingqiao Zheng, Huiyuan Huang, Xiya Yang, Yantao Shi, Bing Yin, Yudi Wang","doi":"10.1016/j.nanoen.2025.110723","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110723","url":null,"abstract":"CsPbBr<sub>3</sub> perovskite has become a star material for triboelectric nanogenerators (TENGs) due to its excellent optoelectronic properties, dielectric properties and stability in the atmosphere. However, regulating its optoelectronic and dielectric properties through charge-directed transport and separation within TENGs has not been comprehensively explored. Herein, p-n junction is constructed to form built-in potential (<em>E</em><sub>built-in</sub>) for charge-directed transport by introducing a semiconductor layer beneath the perovskite film in perovskite-TENGs, where the effect of <em>E</em><sub>built-in</sub>’s direction and intensity on output performance is systematically investigated. Introducing the p-type semiconductor NiO<sub>x</sub> creates a reversed <em>E</em><sub>built-in</sub>, which enhances the surface triboelectric charge density of the perovskite and achieves improved triboelectric output performance of 205<!-- --> <!-- -->V and 43 μA cm<sup>-2</sup> for the PVDF-CsPbBr<sub>3</sub> TENG. Conversely, the n-type semiconductor SnO<sub>2</sub> establishes a parallel <em>E</em><sub>built-in</sub>, greatly facilitating the extraction and separation of photogenerated carriers, leading to a high current density of 1.4<!-- --> <!-- -->mA<!-- --> <!-- -->cm<sup>-2</sup> under illumination based on the triboelectric-photoelectric coupling effect. Moreover, the CsPbBr<sub>3</sub>-TENGs demonstrate superior stability and a broad linear response range and fast photoresponsivity, proving their potential for practical applications in various self-powered optoelectronic detection devices.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"18 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050435","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}
Pub Date : 2025-01-27DOI: 10.1016/j.nanoen.2025.110731
Lianghui Li, Yong Hyun Cho, Won Hyung Lee, Junghyup Han, Seungyeon Yu, Huding Jin, Youn Sang Kim
Electrical energy harvesting via natural water motion along the solid surface has emerged as an advanced renewable energy technology. Amidst the pressing energy demands, natural evaporation-induced electrical energy harvesting has proven its effectiveness in bolstering power generation efficiency through various approaches. Despite such academic endeavors, achieving the practical level of continuous electricity generation remains an ongoing challenge. Herein, an ionovoltaic natural evaporation-induced electrical energy harvesting device utilizing a 2D material-based sodium-doped hydrated vanadium pentoxide film (NaV2O5·nH2O, NaVOH) is demonstrated to facilitate water electrolysis with a high-power output. A unit NaVOH device (1 × 2 × 100 ) generates a remarkable continuous open-circuit voltage of ~1.2 and a short-circuit current of ~100 . By arranging multiple devices in series and parallel, voltage and current are successfully amplified to generate green hydrogen, a process demanding substantial power, thereby marking a notable remark in the field of water motion-induced energy harvesting.
{"title":"Ionovoltaic Natural Evaporation-induced Electrical Energy Harvesting for Green Hydrogen Generation","authors":"Lianghui Li, Yong Hyun Cho, Won Hyung Lee, Junghyup Han, Seungyeon Yu, Huding Jin, Youn Sang Kim","doi":"10.1016/j.nanoen.2025.110731","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110731","url":null,"abstract":"Electrical energy harvesting via natural water motion along the solid surface has emerged as an advanced renewable energy technology. Amidst the pressing energy demands, natural evaporation-induced electrical energy harvesting has proven its effectiveness in bolstering power generation efficiency through various approaches. Despite such academic endeavors, achieving the practical level of continuous electricity generation remains an ongoing challenge. Herein, an ionovoltaic natural evaporation-induced electrical energy harvesting device utilizing a 2D material-based sodium-doped hydrated vanadium pentoxide film (NaV<sub>2</sub>O<sub>5</sub>·nH<sub>2</sub>O, NaVOH) is demonstrated to facilitate water electrolysis with a high-power output. A unit NaVOH device (1 <span><math><mi is=\"true\" mathvariant=\"italic\">cm</mi></math></span> × 2 <span><math><mi is=\"true\" mathvariant=\"italic\">cm</mi></math></span> × 100 <span><math><mi is=\"true\">μ</mi><mi is=\"true\">m</mi></math></span>) generates a remarkable continuous open-circuit voltage of ~1.2 <span><math><mi is=\"true\">V</mi></math></span> and a short-circuit current of ~100 <span><math><mi is=\"true\">μ</mi><mi is=\"true\">A</mi></math></span>. By arranging multiple devices in series and parallel, voltage and current are successfully amplified to generate green hydrogen, a process demanding substantial power, thereby marking a notable remark in the field of water motion-induced energy harvesting.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"25 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050437","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}
The service environments of critical components such as aeronautical main bearings impose severe limitations on the signal transmission capabilities of intelligent sensors based on triboelectric nanogenerators (TENGs). This paper presents a novel hybrid triboelectric variable reluctance generator (HTVRG) that synergistically integrates the precise sensing capabilities of a TENG with the high-power output of a VRG, enabling the intelligent wireless perception of bearing states. An investigation was conducted to examine the impact of various parameters on the output performance of the HTVRG and obtain optimized structural parameters that satisfy sensing requirements and facilitate the stable charging of three 6800 μF capacitors. The self-sensing ability of the HTVRG was verified through experiments considering different speeds, constant speeds, and cage skidding fault monitoring. Additionally, tests utilizing an aero-engine rotor system platform were conducted to validate the wireless intelligent perception of the bearing states of the HTVRG under complex operational scenarios. Finally, the wireless intelligent sensing of the main bearing was validated. The results demonstrate that the HTVRG can help wirelessly transmit TENG real-time sensing signals, even at a low speed of 600 r/min with an interval time of 34 s. Furthermore, the signal features were consistent with the actual operational scenarios. The proposed HTVRG has substantial application prospects and developmental potential in the high-end equipment sector.
{"title":"Hybrid triboelectric-variable reluctance generator assisted wireless intelligent condition monitoring of aero-engine main bearings","authors":"Xiantao Zhang, Qingyu Zhu, Song Wang, Tenghao Ma, Shuai Gao, Yun Kong, Qinkai Han, Fulei Chu","doi":"10.1016/j.nanoen.2025.110721","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110721","url":null,"abstract":"The service environments of critical components such as aeronautical main bearings impose severe limitations on the signal transmission capabilities of intelligent sensors based on triboelectric nanogenerators (TENGs). This paper presents a novel hybrid triboelectric variable reluctance generator (HTVRG) that synergistically integrates the precise sensing capabilities of a TENG with the high-power output of a VRG, enabling the intelligent wireless perception of bearing states. An investigation was conducted to examine the impact of various parameters on the output performance of the HTVRG and obtain optimized structural parameters that satisfy sensing requirements and facilitate the stable charging of three 6800 μF capacitors. The self-sensing ability of the HTVRG was verified through experiments considering different speeds, constant speeds, and cage skidding fault monitoring. Additionally, tests utilizing an aero-engine rotor system platform were conducted to validate the wireless intelligent perception of the bearing states of the HTVRG under complex operational scenarios. Finally, the wireless intelligent sensing of the main bearing was validated. The results demonstrate that the HTVRG can help wirelessly transmit TENG real-time sensing signals, even at a low speed of 600<!-- --> <!-- -->r/min with an interval time of 34<!-- --> <!-- -->s. Furthermore, the signal features were consistent with the actual operational scenarios. The proposed HTVRG has substantial application prospects and developmental potential in the high-end equipment sector.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"19 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044468","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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