Energy & Environmental Science最新文献_第4页

Concurrent energy storage and decarbonization by metal-CO2 batteries: aqueous or non-aqueous? 金属-二氧化碳电池的同步能量储存和脱碳：水或非水？

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-30 DOI: 10.1039/d5ee00266d

Zaiping Guo, Divyani Gupta, Jinshuo Zou, Jianfeng Mao

引用次数: 0

Atomic-level insight into engineering interfacial hydrogen microenvironments of metal-based catalysts for alkaline hydrogen electrocatalysis 碱氢电催化金属基催化剂工程界面氢微环境的原子水平洞察

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-30 DOI: 10.1039/d5ee00943j

Kunjie Wang, Xingyu Cui, Jingxuan Zhao, Qing Wang, Xu Zhao

{"title":"Atomic-level insight into engineering interfacial hydrogen microenvironments of metal-based catalysts for alkaline hydrogen electrocatalysis","authors":"Kunjie Wang, Xingyu Cui, Jingxuan Zhao, Qing Wang, Xu Zhao","doi":"10.1039/d5ee00943j","DOIUrl":"https://doi.org/10.1039/d5ee00943j","url":null,"abstract":"Alkaline hydrogen oxidation reaction (HOR) and hydrogen evolution reaction (HER) are cornerstones for hydrogen utilization in anion exchange membrane fuel cells (AEMFCs) and hydrogen production in anion exchange membrane water electrolyzers (AEMWEs), respectively, with the advantages of using economic catalysts. Nevertheless, even with state-of-the-art Pt, the reaction kinetics of HOR/HER in base are still two orders of magnitude lower than those in acidic systems. For these heterogeneous electrocatalytic processes, the interfacial hydrogen microenvironments have been recently found to be pivotal to the reaction kinetics. Accordingly, it is highly attractive to develop high-performance catalysts with well-unveiled interfacial hydrogen microenvironments towards alkaline HOR/HER. Here, the interfacial hydrogen microenvironments in alkaline HOR/HER are briefly elucidated as a prerequisite for developing catalysts. Meanwhile, the roles of atomic arrangement asymmetry, atomic stacking configuration and atomic boundary structure of metal-based catalysts in tailoring the interfacial hydrogen delivery, interfacial hydrogen accumulation and interfacial hydrogen spillover during alkaline HOR/HER are discussed, respectively. Subsequently, feasible synthesis strategies of metal-based catalysts to achieve confined interfacial hydrogen microenvironments are presented. Furthermore, major challenges and promising directions for designing efficient catalysts with well-engineered interfacial hydrogen microenvironments towards alkaline HOR/HER are highlighted for future studies.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"10 6 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890228","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

Ligand Engineering of Solution-Processed NiOx for High-Performance n-i-p Perovskite Photovoltaics 溶液处理NiOx用于高性能n-i-p钙钛矿光伏的配体工程

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-29 DOI: 10.1039/d5ee00736d

Fang Cao, Xinfeng Dai, Di Tian, Yingchen Peng, Jun Yin, Jing Li, Ye Yang, Nanfeng Zheng, Binghui Wu

{"title":"Ligand Engineering of Solution-Processed NiOx for High-Performance n-i-p Perovskite Photovoltaics","authors":"Fang Cao, Xinfeng Dai, Di Tian, Yingchen Peng, Jun Yin, Jing Li, Ye Yang, Nanfeng Zheng, Binghui Wu","doi":"10.1039/d5ee00736d","DOIUrl":"https://doi.org/10.1039/d5ee00736d","url":null,"abstract":"In n-i-p halide perovskite solar cells (PSCs), replacing organic p-type semiconductors with inorganic alternatives offers significant potential for enhancing long-term stability. While nickel oxide (NiOx) gained prominence as a hole transport layer (HTL) in inverted architectures, traditional solution-deposition techniques for regular configurations face inherent limitations in reconciling colloidal stability, interfacial integrity, and charge transport efficiency. This study introduces a bifunctional ligand design strategy combining short- and long-chain molecules to engineer solution-processable NiOx nanoparticles into high-performance HTLs. The coordinated ligand system achieves three synergistic functions: (1) colloidal stabilization via synergistic adsorption energy modulation, (2) enhanced interparticle charge transfer through controlled C/Ni ratio reduction, and (3) interfacial energy alignment enabled by ligand-mediated charge redistribution. Additionally, incorporating 4.2 wt.% dopant-free poly(3-hexylthiophene) (P3HT) into the optimized NiOx matrix (termed NiPT-HTL) yields record power conversion efficiencies of 24.32% (0.09 cm2) for small-area devices and 22.34% (21.8 cm2) for minimodules, setting a new benchmark for NiOx-based n-i-p architectures. Moreover, the minimodules exhibit exceptional stability with <5% degradation after 700-hour damp-heat operation (60°C/50% RH). This work resolves the inherent incompatibility between solution processability and optoelectronic performance in metal oxide HTLs, establishing a materials innovation framework that bridges fundamental research with the scalable manufacturing of stable perovskite photovoltaics.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"81 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143885052","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

Tuning electronic structure of MOF-based solid-state electrolytes to activate dormant lithium and facilitate ion transport kinetics towards lithium metal batteries 调整mof基固态电解质的电子结构以激活休眠锂并促进离子向锂金属电池的传输动力学

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-28 DOI: 10.1039/d5ee00545k

Qing Liu, Qi An, Kun Zeng, Mou Yang, Haiye Zhu, Xilin Liang, Guiquan Zhao, Mengjiao Sun, Yunchun Zha, Li Yang, Lingyan Duan, Genfu Zhao, Yongjiang Sun, Hong Guo

{"title":"Tuning electronic structure of MOF-based solid-state electrolytes to activate dormant lithium and facilitate ion transport kinetics towards lithium metal batteries","authors":"Qing Liu, Qi An, Kun Zeng, Mou Yang, Haiye Zhu, Xilin Liang, Guiquan Zhao, Mengjiao Sun, Yunchun Zha, Li Yang, Lingyan Duan, Genfu Zhao, Yongjiang Sun, Hong Guo","doi":"10.1039/d5ee00545k","DOIUrl":"https://doi.org/10.1039/d5ee00545k","url":null,"abstract":"The cycling lifespan of high-energy solid-state lithium metal batteries is predominantly limited by the degradation of Li+ kinetics during cycling. In this study, we propose an innovative solid-state electrolyte system that integrates Li activation with interface engineering. A Ti–Co-based bimetallic metal–organic framework host membrane with abundant catalytic sites is developed, effectively activating dormant Li. Meanwhile, in situ polymerization is employed to optimize the compatibility between the membrane and the electrode interface. This design leverages spontaneous redox processes to effectively enhance interfacial charge-transfer kinetics, adjust the local coordination environment of Li+, and promote Li+ transport dynamics, thus boosting the utilization of electroactive Li+. The unique host membrane enables Li||Cu cells to achieve an average utilization rate of 97% for Li+. The resulting asymmetrical cell exhibits an impressive cycle life of 1000 hours at a practical current density of 1 mA cm−2 with a low overpotential. When paired with various cathodes, it delivers stable and highly reversible capacity. Specifically, the assembled NCM90 batteries demonstrate a high reversible capacity of 225.7 mA h g−1 at 0.1C and good cycling stability over 200 cycles at 1C. This finding breaks the conventional strategies aimed at improving the overall performance of solid-state lithium metal batteries and significantly enhances active Li+ utilization efficiency during cyclic kinetic processes.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"32 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880236","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

On the Interface Electron Transport Problem of Highly Active IrOx Catalysts 高活性IrOx催化剂的界面电子传递问题研究

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-28 DOI: 10.1039/d4ee05816j

Jeesoo Park, Dong Wook Lee, Jonghyun Hyun, Hojin Lee, Euntaek Oh, Kyunghwa Seok, Gisu Doo, Hee-Tak Kim

{"title":"On the Interface Electron Transport Problem of Highly Active IrOx Catalysts","authors":"Jeesoo Park, Dong Wook Lee, Jonghyun Hyun, Hojin Lee, Euntaek Oh, Kyunghwa Seok, Gisu Doo, Hee-Tak Kim","doi":"10.1039/d4ee05816j","DOIUrl":"https://doi.org/10.1039/d4ee05816j","url":null,"abstract":"Electron transport resistance at the interface between the catalyst layer (CL) and the porous transport layer (PTL) in the PEMWE anode has long been poorly understood despite its significant impact on performance. In this study, we demonstrate that highly active IrOx nanocatalysts encounter electron transport problems at the interface with the native oxide (TiOx) on the Ti PTL, leading to poor single-cell performance. This issue is attributed to the pinch-off effect caused by the ionomer, which withdraws electrons from TiOx at the interface, creating a severe electron depletion layer. The problem is further exacerbated at the TiOx interface of ultrafine IrOx nanocatalysts, as small-sized catalyst particles form dense CL structures, amplifying the influence of the expanded ionomer/TiOx interface on the entire region. By manipulating the particle size of the IrOx catalyst, we demonstrate this effect at the single-cell level and further validate it through COMSOL Multiphysics simulations. Our findings reveal that IrOx catalysts larger than 20 nm are necessary to mitigate the significant interference caused by the ionomer at the TiOx interface. This work provides critical insights into optimizing catalyst particle dimensions to overcome the pinch-off effect and enhance performance.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"25 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880234","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

A pH-dependent microkinetic modeling guided synthesis of porous dual-atom catalysts for efficient oxygen reduction in Zn–air batteries ph依赖微动力学模型指导锌空气电池高效氧还原多孔双原子催化剂的合成

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-28 DOI: 10.1039/d5ee00215j

Tingting Li, Di Zhang, Yun Zhang, Danli Yang, Runxin Li, Fuyun Yu, Kengqiang Zhong, Xiaozhi Su, Tianwei Song, Long Jiao, Hai-Long Jiang, Guo-Ping Sheng, Jie Xu, Hao Li, Zhen-Yu Wu

{"title":"A pH-dependent microkinetic modeling guided synthesis of porous dual-atom catalysts for efficient oxygen reduction in Zn–air batteries","authors":"Tingting Li, Di Zhang, Yun Zhang, Danli Yang, Runxin Li, Fuyun Yu, Kengqiang Zhong, Xiaozhi Su, Tianwei Song, Long Jiao, Hai-Long Jiang, Guo-Ping Sheng, Jie Xu, Hao Li, Zhen-Yu Wu","doi":"10.1039/d5ee00215j","DOIUrl":"https://doi.org/10.1039/d5ee00215j","url":null,"abstract":"The oxygen reduction reaction (ORR) plays a crucial role in diverse energy conversion devices, such as zinc–air batteries (ZABs). Highly-efficient screening, rational design and precise synthesis of active and stable ORR electrocatalysts will advance ZAB technology for practical applications but they remain very challenging. Herein, we utilized a pH-field coupled microkinetic model to identify Fe1Co1–N6 as the optimal dual-atom catalyst (DAC) for ORR in alkaline media. According to theoretical prediction, a Fe1Co1–N–C DAC with a hierarchically porous structure was synthesized by a hard-template method following a CO2 activation process. The prepared Fe1Co1–N–C DAC exhibits superior ORR activity and stability to the benchmark Pt/C catalyst. More impressively, the Fe1Co1–N–C based ZABs exhibit excellent performance including a high open-circuit voltage (1.51 V), a very high energy density (1079 W h kgZn−1), the best-ever rate capability (from 2 to 600 mA cm−2), and ultra-long ZAB lifespan (over 3600 h/7200 cycles under 5 mA cm−2). This work not only demonstrates that highly-efficient screening combined with rational design of DACs with optimal active sites and pore structures can boost their practical applications, but also presents a highly promising and effective way to synthesize different electrocatalysts for diverse applications.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"71 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880235","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

Synergistic Cooperation between Photovoltaic and Thermoelectric Effects in Solar Cells 太阳能电池中光电和热电效应的协同合作

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-28 DOI: 10.1039/d5ee01548k

Ping Fu, Dong Yang, Yihua Chen, Ruixue Lu, Md Azimul Haque, Yucheng Liu, Yaoyao Han, Hui Li, Ruotian Chen, Jie qiong Liu, Wei Qin, Luis Huerta Hernandez, Fengtao Fan, Kaifeng Wu, Derya Baran, Huanping Zhou, Can Li

{"title":"Synergistic Cooperation between Photovoltaic and Thermoelectric Effects in Solar Cells","authors":"Ping Fu, Dong Yang, Yihua Chen, Ruixue Lu, Md Azimul Haque, Yucheng Liu, Yaoyao Han, Hui Li, Ruotian Chen, Jie qiong Liu, Wei Qin, Luis Huerta Hernandez, Fengtao Fan, Kaifeng Wu, Derya Baran, Huanping Zhou, Can Li","doi":"10.1039/d5ee01548k","DOIUrl":"https://doi.org/10.1039/d5ee01548k","url":null,"abstract":"Efficient utilization of thermal energy generated from infrared light has long been a focal point in the development of high-efficiency photovoltaic (PV) devices. Theoretically, the thermal energy can be converted to electricity through the thermoelectric (TE) effect. However, integrating PV and TE effects in a PV device for solar-to-electricity conversion has remained largely unexplored. Herein, we investigated the concurrent utilization of PV and TE effects under a temperature gradient (ΔT) across perovskite solar cells (PSCs). A record power conversion efficiency (PCE) of 27.17% (26.87%, average) was achieved for FAPbI3-based PSCs at ΔT = 10 oC, compared to the control cases with PCE of 25.65% (25.28%, average). The exemplary PCE is attributed to full spectrum utilization of solar energy and directional regulation of charge carrier transport induced by built-in temperature gradients, which facilitates their efficient collection. Our findings reveal the TE effect in the PV process and demonstrate the synergistic cooperation between PV and TE effects for enhancing the performance of PSCs.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"219 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880233","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

Direct seawater electrolysis for green hydrogen production: electrode designs, cell configurations, and system integrations 用于绿色制氢的直接海水电解：电极设计，电池配置和系统集成

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-28 DOI: 10.1039/d5ee01093d

Lizhen Wu, Yifan Xu, Qing Wang, Xiaohong Zou, Zhefei Pan, Michael K. H. Leung, Liang An

{"title":"Direct seawater electrolysis for green hydrogen production: electrode designs, cell configurations, and system integrations","authors":"Lizhen Wu, Yifan Xu, Qing Wang, Xiaohong Zou, Zhefei Pan, Michael K. H. Leung, Liang An","doi":"10.1039/d5ee01093d","DOIUrl":"https://doi.org/10.1039/d5ee01093d","url":null,"abstract":"Direct seawater electrolysis (DSE) is a promising technology for sustainable hydrogen production, utilizing abundant marine resources. However, industrialization of DSE faces significant long-term stability challenges due to the complex composition of seawater, which contains various ions and microorganisms that can lead to both chemical and physical degradation of the electrolysis system. For instance, the presence of chloride ions (Cl−) hinders the desired oxygen evolution reaction (OER) because competing chlorine evolution reactions (CER) occur and adversely impact electrode materials, resulting in low system efficiency and poor longevity. To enhance long-term stability of DSE, researchers are investigating robust electrocatalysts and advanced surface modifications that improve protection against corrosive environments and enhance selectivity. Innovative electrode designs are also being developed to manage bubble transport and decrease precipitation. Additionally, the design of electrolysis cells, such as bipolar membrane cells, offers a viable solution by minimizing Cl− transport and corrosive environment. With an increasing number of offshore renewable energy projects, the integration of effective DSE technologies in the offshore environment is critical. This review provides the state-of-the-art of electrodes, cells and systems, contributing to the development of DSE for long-term stable operation.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"14 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880237","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

Reconfiguring Zn Deposition Dynamics via Epitaxial Zn2+ Pathway in Profiled Viscose Rayon for Long-Cyclability Zinc-Ion Batteries 通过外延Zn2+通路重构异形粘胶人造丝长循环锌离子电池中锌沉积动力学

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-28 DOI: 10.1039/d5ee00052a

Sainan Ou, Jiaxian Zheng, Xingshu Chen, Ran Li, Zhanhui Yuan, Shude Liu, Yao Niu, Meng An, Ge Zhou, Yusuke Yamauchi, Xinxiang Zhang

{"title":"Reconfiguring Zn Deposition Dynamics via Epitaxial Zn2+ Pathway in Profiled Viscose Rayon for Long-Cyclability Zinc-Ion Batteries","authors":"Sainan Ou, Jiaxian Zheng, Xingshu Chen, Ran Li, Zhanhui Yuan, Shude Liu, Yao Niu, Meng An, Ge Zhou, Yusuke Yamauchi, Xinxiang Zhang","doi":"10.1039/d5ee00052a","DOIUrl":"https://doi.org/10.1039/d5ee00052a","url":null,"abstract":"Rechargeable aqueous zinc-ion batteries (AZIBs) are promising candidates for stationary energy storage due to their intrinsic safety, environmental sustainability, and cost-effectiveness. However, their cycling stability is hammered by uncontrollable dendrite formation and hydrogen evolution reaction (HER) at Zn anode. Here, we propose a cost-effective commercial viscose fabric, derived from profiled viscose rayons, as a versatile separator for reconfiguring the interface dynamics of Zn deposition, enabled by the surface grooves with abundant carboxyl groups on profiled viscose rayons. Results show that carboxyl groups facilitate the desolvation of hydrated Zn2+ to suppress HER while surface grooves provide epitaxial Zn2+ pathways for rapid horizontal transport of Zn2+ on the surface of Zn anode which promotes the transition of Zn deposition manner from 2D to 3D diffusion and hence regulates the grow direction of Zn crystals from (101) to (002) to form a uniform and dense Zn deposition on anode. Consequently, AZIBs implementing the viscose fabric separator exhibit high battery performance, including improved cycle life over 4600 h at 1 mA cm-2 and enhanced rate capability. This work highlights the significant potential of profiled viscose rayon in reconfiguring the interface dynamics of Zn deposition, providing guidance for the design of advanced separators in AZIBs.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"1 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880232","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

Neighboring Iron Single Atomic Sites Boost PtCo Intermetallic for High-Durability ORR Electrocatalysis 邻近铁单原子位增强PtCo金属间化合物用于高耐久性ORR电催化

IF 32.5 1区材料科学

Energy & Environmental Science Pub Date : 2025-04-28 DOI: 10.1039/d5ee00624d

Kai Chen, Junheng Huang, Junxiang Chen, Jiyuan Gao, zhiwen lu, Xi Liu, Senchen Lan, Guohua Jia, Suqin Ci, Zhenhai Wen

{"title":"Neighboring Iron Single Atomic Sites Boost PtCo Intermetallic for High-Durability ORR Electrocatalysis","authors":"Kai Chen, Junheng Huang, Junxiang Chen, Jiyuan Gao, zhiwen lu, Xi Liu, Senchen Lan, Guohua Jia, Suqin Ci, Zhenhai Wen","doi":"10.1039/d5ee00624d","DOIUrl":"https://doi.org/10.1039/d5ee00624d","url":null,"abstract":"Advancing fuel cell technology hinges on developing stable, efficient Pt-based catalysts for the oxygen reduction reaction (ORR), yet challenges like the high cost and limited durability of Pt-based materials persist. Here, we present an electrocatalyst that harnesses the strong interaction between Fe single atoms and neighboring ordered PtCo alloys (O-PtCo-FeNC) confined in microporous carbon. The unique coordination of FeN3 sites with PtCo intermetallic enables precise optimization of catalyst size and structure, boosting PtCo intermetallic activity and yielding exceptional ORR performance. This is verified by a half-wave potential of 0.86 V vs. RHE in 0.5 M H2SO4 and a mass activity of 1.34 A/mgPt, achieving an 8.1-fold improvement over Pt/C, while maintaining exceptional durability for over 50,000-cycles. In-situ characterization and theoretical calculations reveal that isolated Fe sites reduce the d-band center of neighboring Pt sites, weakening adsorption energy and synergistically enhancing both activity and stability. When deployed in the air cathode of a hybrid acid/alkali Zn-air battery, the catalyst delivers an outstanding open circuit voltage of 2.32 V and a peak power density of 751 mW cm-2. This integration of intermetallic compounds with single-atom sites establishes a new benchmark for advanced ORR electrocatalysts, marking a significant advancement in fuel cell technology.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"269 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880238","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