IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-04-06 DOI: 10.1016/j.nanoen.2025.110975

Jian Guo, Rui Ding, Yi Li, Yiqing Lu, Ziyang Yan, Zhiqiang Chen, Yuming He, Qingcheng Yang, Xinchang Guo, Yibo Zhang, Jiajie Luo

{"title":"Semi-ionic C-F optimizes metal-support interaction of Rh/F, N-codoped porous carbon for efficient all-pH hydrogen production","authors":"Jian Guo, Rui Ding, Yi Li, Yiqing Lu, Ziyang Yan, Zhiqiang Chen, Yuming He, Qingcheng Yang, Xinchang Guo, Yibo Zhang, Jiajie Luo","doi":"10.1016/j.nanoen.2025.110975","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110975","url":null,"abstract":"Designing efficient and robust Rh-based electrocatalysts with strong metal-support interaction for hydrogen evolution reaction (HER) across various pH conditions is of great significance and challenge. Herein, a hydrogel sealing-pyrolyzing-etching strategy is engineered to anchor ultrafine Rh nanoparticles (Rh NPs) on N-doped porous carbon (Rh/NPC), further introducing strong electronegativity F-dopants to strengthen the metal-support interaction for obtaining high electroactivity Rh NPs/ F, N-codoped porous carbon composite (Rh/FNPC) toward HER. The optimal 8Rh/FNPC renders ultralow overpotentials in 1 M KOH (η10 = 12 mV), 0.5 M H2SO4 (η10 = 42 mV), and 1 M phosphate buffer solution (η10 = 64 mV). Density functional theory (DFT) simulations unveil that the F dopants can optimize the adsorption free energies of reaction intermediates and accelerate the rate-determining steps on the Rh active site, thereby achieving high intrinsic activity and exceptional electroactivity of Rh/FNPC. This work affords new perspectives and avenues for constructing advanced catalysts in various catalytic applications.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"16 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784753","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}

引用次数: 0

Self-powered and integral self-healing dielectric elastomer actuator with a robust interface

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-04-06 DOI: 10.1016/j.nanoen.2025.110974

Shangzhi Yue, Yanze Liu, Zhongyuan Tian, Zijuan Zhu, Xiangyu Chen, Xiaofeng Li, Zhong Lin Wang, Zhong-Zhen Yu, Dan Yang

{"title":"Self-powered and integral self-healing dielectric elastomer actuator with a robust interface","authors":"Shangzhi Yue, Yanze Liu, Zhongyuan Tian, Zijuan Zhu, Xiangyu Chen, Xiaofeng Li, Zhong Lin Wang, Zhong-Zhen Yu, Dan Yang","doi":"10.1016/j.nanoen.2025.110974","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110974","url":null,"abstract":"Dielectric elastomer actuators (DEAs) have been intensively studied as a promising candidate for artificial muscle. However, their high voltage requirements and vulnerability to external damage limit their widespread application and long-term service life. Herein, a novel polydimethylsiloxane with reversible imine and disulfide bonds is synthesized to develop an integral self-healing DEA (ISDEA), where both the dielectric film and compliant electrodes possess self-healing capabilities. Because the effective diffusion of self-healing polydimethylsiloxane chains along the interface between the dielectric film and the compliant electrodes, the ISDEA achieves a robust interface with a bonding force of 4.12 N, resulting in an integral self-healing efficiency of more than 92.1% after mechanical damage. Furthermore, a triboelectric nanogenerator is used to drive the ISDEA, resulting in a self-powered ISDEA system that not only ensures safe operation but also prevents the electrical breakdown of the ISDEA. The self-powered ISDEA is then combined with a spring to create a roll-type finger rehabilitation trainer that can be used as motion-assisted soft robots for spinal muscular atrophy patients. The presented ISDEA provides guidance not only for the artificial muscles that mimic natural muscles but also for future intelligent integrated devices.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"1 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784752","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}

引用次数: 0

Introducing 3 s/p-3p orbital hybridization to stabilize and activate Ni3S4 for efficient hydroxyl ion storage

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-04-06 DOI: 10.1016/j.nanoen.2025.110976

Yifan Bi, Yu Wang, Yuanming Li, Alan Meng, Guicun Li, Lei Wang, Jian Zhao, Minmin Hu, Zhenjiang Li

{"title":"Introducing 3 s/p-3p orbital hybridization to stabilize and activate Ni3S4 for efficient hydroxyl ion storage","authors":"Yifan Bi, Yu Wang, Yuanming Li, Alan Meng, Guicun Li, Lei Wang, Jian Zhao, Minmin Hu, Zhenjiang Li","doi":"10.1016/j.nanoen.2025.110976","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110976","url":null,"abstract":"Transition metal sulfides have been identified as promising battery type electrode materials for supercapacitor (SC) owing to their exceptional conductivity and substantial theoretical capacities. However, the fast SC capacity decay often occurs, which is attributed to the instability of the sulfur framework caused by the presence of metal cations with strong Jahn-Teller distortion and/or limited orbital interactions between cations and sulfur (primarily involving 3d–3p interaction). Herein, we successfully develop a robust and durable sulfur framework through incorporating intense 3 s/p–3p orbital hybridization into the structure, with Ni3S4 serving as a representative example. The modified sulfide exhibits exceptional stability in SC performance, achieving 93.1% capacity retention after 10,000 cycles at a higher current density of 20 A g-1. Moreover, this orbital hybridization strategy also well regulates the d-band center of Ni and introduces the S vacancies, which not only promotes adsorption of the OH- ions but also renders lower diffusion barrier, thus realizing larger specific capacity of 295 mAh g-1 at a current density of 1 A g-1 and fast reaction kinetics. This study provides a new perspective to understand the structural stability and offers new opportunities to extend sulfide electrodes enabling high performance through modification in orbital interaction.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"91 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784751","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}

引用次数: 0

Corrigendum to “Multimodal energy harvesting utilizing BiOI nanoflowers with superior adsorption capabilities for efficient piezo-photocatalytic wastewater treatment” [Nano Energy 132 (2024) 110415]

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-05 DOI: 10.1016/j.nanoen.2025.110937

Cuilu Xi , Ruiming Tan , Qi Ai , Jiasong Zhong , Shiqing Xu , Gongxun Bai

引用次数: 0

Enhanced Energy Harvesting through Lubricant-Water Interaction on a Superoleophobic Stainless Steel@Cellulose Ester Nanogenerator

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-04-05 DOI: 10.1016/j.nanoen.2025.110958

Hsuan-Yu Yeh, Kuldeep Kaswan, Helmi Son Haji, Ravindra Joshi, Arshad Khan, Parag Parashar, Jui-Han Yu, Wei-Zan Hsu, Po-Yu Chen, Jinn P. Chu, Zong-Hong Lin

{"title":"Enhanced Energy Harvesting through Lubricant-Water Interaction on a Superoleophobic Stainless Steel@Cellulose Ester Nanogenerator","authors":"Hsuan-Yu Yeh, Kuldeep Kaswan, Helmi Son Haji, Ravindra Joshi, Arshad Khan, Parag Parashar, Jui-Han Yu, Wei-Zan Hsu, Po-Yu Chen, Jinn P. Chu, Zong-Hong Lin","doi":"10.1016/j.nanoen.2025.110958","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110958","url":null,"abstract":"The growing global population accentuates the critical demand for self-powered smart electronic systems, particularly in sensing and clean energy harvesting. Triboelectric nanogenerators (TENGs) have garnered substantial attention due to their simple design, material adaptability, and efficiency in scavenging ambient low-frequency mechanical energy. Nevertheless, conventional solid-solid TENGs encounter challenges, including diminished output over time, environmental degradation, and mechanical wear. To address these challenges, we developed a lubricant-water triboelectric nanogenerator (LW-TENG) with underwater superoleophobic properties. This design incorporates stainless steel nanoparticles coated on a mixed cellulose ester substrate, and a squalane lubricant droplet to enhance triboelectric performance, achieving an underwater oil contact angle of 159°. The proposed LW-TENG also exhibited an open-circuit voltage (VOC) of 70 V, a short-circuit current (ISC) density of ≈2 µA·cm⁻², and a peak power density of ≈84 µW·cm⁻², and long-term microstructural stability. The practical utility of this LW-TENG was validated through a prototype capable of harvesting energy from surface waves, underwater currents, and wind, providing a cost-effective, versatile, and reliable source of electrical power for long-term sensor deployment or emergency scenarios. This work highlights LW-TENG's vast potential in green energy harvesting applications, underpinned by cost-effective manufacturing processes and versatility in deployment.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"4 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784754","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}

引用次数: 0

Reversible Oxygen Vacancies in Tungsten Oxide-Activated Heterocatalysts Enable Stable Electrocatalytic Oxygen Evolution 氧化钨活化异质催化剂中的可逆氧空位可实现稳定的电催化氧进化

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-04-04 DOI: 10.1016/j.nanoen.2025.110961

Fengli Wei, Qimin Peng, Tianxiao Sun, Jianqiu Zhu, Zuyang Luo, Dingsheng Wang, Xiulin Yang, Shuhui Sun, Bin Wu

{"title":"Reversible Oxygen Vacancies in Tungsten Oxide-Activated Heterocatalysts Enable Stable Electrocatalytic Oxygen Evolution","authors":"Fengli Wei, Qimin Peng, Tianxiao Sun, Jianqiu Zhu, Zuyang Luo, Dingsheng Wang, Xiulin Yang, Shuhui Sun, Bin Wu","doi":"10.1016/j.nanoen.2025.110961","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110961","url":null,"abstract":"Interfacial and oxygen vacancy engineering are promising strategies to tune the electronic structure of electrocatalysts and modulate the surface absorption/desorption of reactants, thereby enhancing oxygen evolution reaction (OER) activity and stability. Herein, we present a surface cladding strategy to mitigate Co dissolution and stabilize oxygen vacancies triggered by strong electronic interactions via constructing elaborately W18O49/Co3(BO3)2 heterostructure. Multiple in-situ characterization technologies confirm that this synergy enables the formation of active centers and accelerates charge transfer, resulting in improved oxygen evolution activity. Importantly, the incorporation of W18O49 provides dynamically reversible oxygen vacancies that enhance catalysis durability, stabilizing the active Co sites during OER processes. Theoretical calculations further reveal that the interfacial electronic interaction enhances charge transfer, suppresses cobalt ions demetalization, and stabilizes oxygen vacancy within the crystal structure. Owing to the stabilized Co sites and O sites, the W18O49/Co3(BO3)2 exhibits high activity (251 mV at 10 mA cm−2) and outstanding stability, with minimal degradation after 100 hours of operation. This work offers valuable insights into designing highly active and durable OER catalysts by leveraging heterointerfacial and oxygen vacancy engineering.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"58 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776193","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}

引用次数: 0

Reducing Open-circuit Voltage Deficit of Wide-bandgap Perovskite Solar Cells by Heterocyclic Amine Modification 通过杂环胺改性减少宽带隙过氧化物太阳能电池的开路电压缺陷

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-04-04 DOI: 10.1016/j.nanoen.2025.110954

Tianyu Wen, Jie Zhou, Jinglin Sun, Zhilong He, Yiheng Shi, Chao Yu, Mengjiong Chen, Yanbo Wang, Hongliang Zhong, Shuang Yang, Yu Hou, Zhibin Yang

{"title":"Reducing Open-circuit Voltage Deficit of Wide-bandgap Perovskite Solar Cells by Heterocyclic Amine Modification","authors":"Tianyu Wen, Jie Zhou, Jinglin Sun, Zhilong He, Yiheng Shi, Chao Yu, Mengjiong Chen, Yanbo Wang, Hongliang Zhong, Shuang Yang, Yu Hou, Zhibin Yang","doi":"10.1016/j.nanoen.2025.110954","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110954","url":null,"abstract":"Wide-bandgap (WBG) perovskites play a key role in multi-junction tandem solar cells, which have greater potential in delivering higher power conversion efficiencies than single-junction devices. However, WBG perovskite solar cells suffer from relatively high open-circuit voltage (VOC) loss due to their high surface defect density and interfacial energy band mismatch. Here, we found the heterocyclic amines with stronger electron donating ability are able to better passivate the defects by proton exchange and coordination reaction, as well as facilitating the electron transfer on the interface between the perovskite and electron transporting layer by regulating the band structure. After comparison, the piperazine modified WBG perovskite solar cells exhibit power conversion efficiency of 19.5% with high VOC of 1.35 V. Finally, we fabricated all-perovskite tandem solar cells with above optimized WBG perovskite, and achieved a noteworthy PCE of 27.1% with outstanding photostability. This work presents a novel strategy to reduce the VOC deficit in WBG perovskite solar cells, ultimately benefiting the advancement of high-performance perovskite-based tandem solar cells.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"54 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776190","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}

引用次数: 0

Interface contact optimization and defect passivation via Tyramine Hydrochloride for efficient and stable inverted perovskite solar cells 通过盐酸酪胺优化界面接触并钝化缺陷，实现高效稳定的反相包晶石太阳能电池

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-04-04 DOI: 10.1016/j.nanoen.2025.110944

Shizi Luo, Shuguang Cao, Zhuoneng Bi, Yupeng Zheng, Haider Ali Tauqeer, Yuling Zhuo, Victoria V. Ozerova, Nikita A. Emelianov, Nikita A. Slesarenko, Lyubov A. Frolova, Lavrenty G. Gutsev, Bala R. Ramachandran, Gennady L. Gutsev, Pavel A. Troshin, Xueqing Xu

{"title":"Interface contact optimization and defect passivation via Tyramine Hydrochloride for efficient and stable inverted perovskite solar cells","authors":"Shizi Luo, Shuguang Cao, Zhuoneng Bi, Yupeng Zheng, Haider Ali Tauqeer, Yuling Zhuo, Victoria V. Ozerova, Nikita A. Emelianov, Nikita A. Slesarenko, Lyubov A. Frolova, Lavrenty G. Gutsev, Bala R. Ramachandran, Gennady L. Gutsev, Pavel A. Troshin, Xueqing Xu","doi":"10.1016/j.nanoen.2025.110944","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110944","url":null,"abstract":"Efficient and stable inverted perovskite solar cells (PSCs) have combined many advantages which makes them particularly promising, with potential for rapid commercialization. However, there are still some challenges to overcome, including poor energy level alignment between perovskite and charge transport interlayers, the presence of deleterious interface defects, and the hydrophobicity of NiOx/PTAA-based double hole transport layer which seriously depress the improvement of the power conversion efficiency (PCE) and stability of PSCs. Presently, we utilized a passivating salt, tyramine hydrochloride (TACl), to modify the NiOx/PTAA film and both perovskite absorber interfaces. The modification using TACl resulted in improving wettability of the PTAA film through the formation of cid-base interactions at solvation model and nonconventional -OH···π hydrogen bonds as well as optimizing energy level alignment, a lower rate of nonradiative recombination, and a markedly improved crystal quality of the perovskite films. Finally, we obtained a NiOx/PTAA-based inverted PSCs device with a PCE of 23.35%. Our unencapsulated optimized devices maintained 90.2% of their initial PCE after 1000 h of MPPT monitoring. In addition, we prepared the PSCs devices with the bandgaps of 1.56 eV and 1.68 eV, which achieved PCEs of 25.13% and 22.36%, respectively.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"108 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782991","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}

引用次数: 0

Enhanced electrocatalytic synthesis and degradation enabled by triboelectric effect

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-04-04 DOI: 10.1016/j.nanoen.2025.110962

Jiamin Zhao, Xiangjiang Meng, Zhiting Wei, Jilong Mo, Wanhai Wu, Bin Luo, Hainong Song, Shuangxi Nie

{"title":"Enhanced electrocatalytic synthesis and degradation enabled by triboelectric effect","authors":"Jiamin Zhao, Xiangjiang Meng, Zhiting Wei, Jilong Mo, Wanhai Wu, Bin Luo, Hainong Song, Shuangxi Nie","doi":"10.1016/j.nanoen.2025.110962","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110962","url":null,"abstract":"Electrocatalytic technology has become an important research direction in the field of new energy conversion and pollution control due to its high efficiency and environmental protection. The triboelectric effect, as a physical phenomenon that can directly convert mechanical energy into electric energy, provides a brand-new idea for the efficient driving and enhancement of electrocatalytic process. This paper reviews the application potential of the triboelectric effect in electrocatalytic synthesis and degradation processes, systematically discussing the theoretical foundation, enhancement mechanisms, reactor design, and practical applications of triboelectric-enhanced electrocatalysis. Firstly, this paper elaborates on the theoretical foundation of the triboelectric effect in the field of electrocatalysis, with a focus on analyzing the intrinsic mechanisms of mechanical energy-driven interfacial electron transfer and active species generation. Secondly, for both catalytic synthesis and pollutant degradation, the paper examines the key role of the triboelectric effect in optimizing reaction pathways, enhancing energy conversion efficiency, and improving reaction selectivity. Subsequently, the design principles and key construction elements of triboelectric electrocatalytic reactors are summarized, and their performance in synthesizing compounds and degrading pollutants in practical applications is discussed. Finally, the paper looks ahead to the challenges and future directions of triboelectric-enhanced electrocatalysis technology, aiming to provide theoretical support and practical guidance for related fundamental research and engineering applications.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"81 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782989","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}

引用次数: 0

Stabilizing Hypervalent Ru Sites in RuO2 Catalysts by Synergistic Bimetal Codoping for Long-Lasting Ampere-Level PEM Water Electrolysis

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-04-04 DOI: 10.1016/j.nanoen.2025.110960

Pengfei Li, Shupeng Wang, Hongpu Huang, Linrui Wen, Junlin Cai, Yuhang Peng, Zhongyuan Zou, Xiaohong Wang, Xiaoliang Fang, Lei Fang, Xue Wang, Zhaoxiong Xie, Shuifen Xie

{"title":"Stabilizing Hypervalent Ru Sites in RuO2 Catalysts by Synergistic Bimetal Codoping for Long-Lasting Ampere-Level PEM Water Electrolysis","authors":"Pengfei Li, Shupeng Wang, Hongpu Huang, Linrui Wen, Junlin Cai, Yuhang Peng, Zhongyuan Zou, Xiaohong Wang, Xiaoliang Fang, Lei Fang, Xue Wang, Zhaoxiong Xie, Shuifen Xie","doi":"10.1016/j.nanoen.2025.110960","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110960","url":null,"abstract":"Exploring feasible Ir-free anode catalysts is pivotal for large-scale implementing proton exchange membrane water electrolysis (PEMWE) to produce green-H2. Here we demonstrate that synergistic Mo and Rh codoped RuO2 (Mo,Rh-RuO2) catalysts can strengthen hypervalent Ru sites to break the activity-stability tradeoff in sluggish oxygen evolution reaction (OER), realizing long-lasting ampere-level PEMWE. Cross-linked ultrafine Mo,Rh-RuO2 nanocatalysts are synthesized via a simple molten salt method. The sample exhibits significant low overpotentials for OER, e.g. 208 mV at 100 mA cm-2, with excellent stability. In an PEM electrolyzer, it requires only 1.58 and 1.87 V cell voltages to respectively reach 1.0 and 3.0 A cm-2 current densities and exhibits a minimal decay of only 0.03 mV h-1 at 1.0 A cm-2 for over 2000 h durability test. Such superior OER and electrolyzer performances outperform most the cutting-edge electrocatalysts. Mechanism studies indicate that the Mo,Rh-RuO2 catalyst possesses significantly increased OER-active hypervalent Ru and strengthened Ru−O bonds. A great portion of reaction paths are converted from habitual lattice oxygen evolution mechanism to adsorbate evolution mechanism, greatly suppressing the consumption of lattice oxygen. Moreover, the Mo,Rh-RuO2 catalysts possess crucial self-healing ability of oxygen vacancies and stabilized surface hypervalent Ru sites for drastically boosting long-term stability.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"23 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782900","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}

引用次数: 0

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