Advanced Energy Materials最新文献

Novel Fe‐Modulating Raney‐Ni Electrodes toward High‐Efficient and Durable AEM Water Electrolyzer 新型铁改性雷尼-镍电极实现高效耐用的 AEM 水电解槽

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-26 DOI: 10.1002/aenm.202501634

Tao Jiang, Xinge Jiang, Chongyang Jiang, Jian Wang, Yoann Danlos, Taikai Liu, Chunming Deng, Chaoyue Chen, Hanlin Liao, Vasileios Kyriakou

{"title":"Novel Fe‐Modulating Raney‐Ni Electrodes toward High‐Efficient and Durable AEM Water Electrolyzer","authors":"Tao Jiang, Xinge Jiang, Chongyang Jiang, Jian Wang, Yoann Danlos, Taikai Liu, Chunming Deng, Chaoyue Chen, Hanlin Liao, Vasileios Kyriakou","doi":"10.1002/aenm.202501634","DOIUrl":"https://doi.org/10.1002/aenm.202501634","url":null,"abstract":"Anion exchange membrane (AEM) water electrolysis holds promise for green hydrogen production. One of the main challenges is the preparation of highly efficient electrodes with scalable techniques. Herein, a novel Fe‐modulating Raney‐Ni electrode (NFA‐CA) is developed through atmospheric plasma spraying and chemical etching techniques. The resulting electrode demonstrates high bifunctional catalytic activities with low overpotentials and Tafel slopes (HER: 27 mV at 10 mA cm−2, 20 mV dec−1; OER: 169 mV at 10 mA cm−2, 49 mV dec−1), competing for precious‐metal catalysts and leading transition‐metal‐based compounds reported in the literature. Moreover, the corresponding AEM electrolyzer only requires 1.56 V to drive 1 A cm−2 and exceptional durability for 1000 h. Moreover, the AEM cell can reach 2 A cm−2 at 1.79 V, exceeding the United States Department of Energy target for AWE systems (2 A cm−2 at 1.80 V). The highly efficient and durable performance is attributed to the NiFe nanocrystals (core)‐NiFe hydroxide (shell) nanostructures created by the treatment. This structure not only facilitates superior electrocatalytic properties but it is also maintained after 1000 h of continuous operation. It is consider that the present approach can offer an attractive route for scalable fabrication of NiFe‐based electrodes for industrial AEM water electrolyzers.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"72 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876153","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

Ultrafast Microwave Quasi‐Solid‐State Construction of Os‐OsP₂ with Enhanced Interfacial Spillover for Seawater‐Based Anion Exchange Membrane Electrolyzers 海水基阴离子交换膜电解槽界面溢出增强的Os - osp2超快微波准固态构建

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-26 DOI: 10.1002/aenm.202501054

Xiaowei Fu, Xingchao Zang, Jinxiao Gao, Hongdong Li, Weiping Xiao, Yingxia Zong, Guangying Fu, Jinsong Wang, Tianyi Ma, Wei Jin, Zexing Wu, Lei Wang

{"title":"Ultrafast Microwave Quasi‐Solid‐State Construction of Os‐OsP₂ with Enhanced Interfacial Spillover for Seawater‐Based Anion Exchange Membrane Electrolyzers","authors":"Xiaowei Fu, Xingchao Zang, Jinxiao Gao, Hongdong Li, Weiping Xiao, Yingxia Zong, Guangying Fu, Jinsong Wang, Tianyi Ma, Wei Jin, Zexing Wu, Lei Wang","doi":"10.1002/aenm.202501054","DOIUrl":"https://doi.org/10.1002/aenm.202501054","url":null,"abstract":"Developing cost‐effective hydrogen evolution reactions (HER) catalysts to replace Pt/C in alkaline seawater media remains a critical challenge. Therefore, the osmium‐osmium phosphide (Os‐OsP2) catalyst is reported with a heterogeneous junction through ultrafast (20 s) microwave quasi‐solid approach for seawater‐splitting under industrial‐grade current density. Experimental and theoretical analysis reveal that the Os‐OsP₂ interface optimizes electronic structure: osmium (Os) sites accelerate water dissociation by lowering the d‐band center, while OsP₂ promotes hydrogen desorption via interfacial spillover, collectively reducing the HER energy barrier. In addition, the catalyst requires only 1.74 V to reach 1 A cm−2 and owns high price activity in the anion exchange membrane water electrolyzer, surpassing commercial Pt/C by 23% in efficiency under identical conditions. Furthermore, it exhibits robust HER activity across a wide pH range and exceptional durability over 100 h in alkaline seawater. Economic evaluation highlights its superior cost activity (85.6 A dollar⁻¹), 90‐fold higher than Pt/C, with hydrogen production costs ($0.86 GGE⁻¹) undercutting the U.S. DOE target. This study provides feasible guidance for the development of high‐performance, cost‐effective catalysts for scalable hydrogen production from seawater.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"78 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876154","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

Bridged Mn─O─Ru Motifs in RuO2 Catalyst Promoting Hydrogen Production at Ampere‐Level Current Density RuO2催化剂中Mn─O─Ru桥接基序在安培电流密度下促进制氢

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-26 DOI: 10.1002/aenm.202500815

Qiqi Li, Qiulin Xu, Zhenxin Pei, Zhixuan Zhang, Wenli Xu, Jiayao Mao, Qing Shang, Yongqiang Ni, Yifan Chen, Yongting Chen, Xinghui Liu, Xuanke Li, Qin Zhang, Nianjun Yang

{"title":"Bridged Mn─O─Ru Motifs in RuO2 Catalyst Promoting Hydrogen Production at Ampere‐Level Current Density","authors":"Qiqi Li, Qiulin Xu, Zhenxin Pei, Zhixuan Zhang, Wenli Xu, Jiayao Mao, Qing Shang, Yongqiang Ni, Yifan Chen, Yongting Chen, Xinghui Liu, Xuanke Li, Qin Zhang, Nianjun Yang","doi":"10.1002/aenm.202500815","DOIUrl":"https://doi.org/10.1002/aenm.202500815","url":null,"abstract":"Accurately regulating the reactive sites of catalysts is vital for highly efficient catalytic processes but still faces considerable challenges. In view of this, a local oxidation‐state asymmetric Mn‐O‐Ru bridged moiety is developed by introducing Mn atoms into the RuO2 host. The synergistic effect of the respective active sites on the Mn‐O‐Ru microstructure ensures its excellent alkaline HER performance. Theoretical calculations profiled that induced by the Mn‐O‐Ru bridged moiety, the water dissociation ability of Ru sites is significantly boosted, while the bridging oxygen exhibits the optimal hydrogen adsorption free energy. As predicted, the Mn‐RuO2 catalyst achieved the overpotentials as low as 118 and 160 mV at the industrial level current densities of 1 and 2 A cm‒2 in 1 m KOH, respectively, superior to the RuO2 and commercial Pt/C catalyst. Such a Mn‐RuO2 electrocatalyst can operate stably with a long lifetime of 300 h at 10 mA cm‒2 under alkaline conditions. Furthermore, it only requires 1.87 V to reach the current density of 1.0 A cm‒2 when serving as the cathode in an assembled flow cell. This work provides new insight into catalytic local environment design for obtaining ideal efficient HER electrocatalysts.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"3 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876152","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

Rare Earth Single Atoms Steering Hydrogen Spillover Over Pd/WO3 Toward High‐Efficiency H2 Sensor at Near Room Temperature 近室温下稀土单原子控制Pd/WO3上氢溢出的高效H2传感器

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-26 DOI: 10.1002/aenm.202501365

Zexin Wei, Min Song, Huanxin Wang, Yonghui Zhang, Guang Zeng, Min Kong, Feilong Gong, Jian Liu, Shizhong Wei

{"title":"Rare Earth Single Atoms Steering Hydrogen Spillover Over Pd/WO3 Toward High‐Efficiency H2 Sensor at Near Room Temperature","authors":"Zexin Wei, Min Song, Huanxin Wang, Yonghui Zhang, Guang Zeng, Min Kong, Feilong Gong, Jian Liu, Shizhong Wei","doi":"10.1002/aenm.202501365","DOIUrl":"https://doi.org/10.1002/aenm.202501365","url":null,"abstract":"Metal oxide semiconductor (MOS) supported Pd materials are potential candidates for H2 sensors, while effective H2 detection at near room temperature remains a great challenge owing to the difficulty of hydrogen migration from Pd at low temperature. Herein, guided by theoretical calculations, rare earth single atoms doping Pd nanoparticles supported on WO3 nanorods with tunable work function differences (ΔФ) and oxygen vacancies are precisely developed to improve H2 sensing performances. The resultant Ce‐Pd/WO3 presents the highest response of 31.3 toward 50 ppm H2, showing 6 times improvement over the Pd/WO3, which realizes the trace and fast detection of H2. Density functional theory results reveal that the energy barrier of hydrogen migration and the formation energy of oxygen vacancy decrease after introducing rare earth single atoms, and Ce‐Pd/WO3 with the lowest ΔФ exhibits the most facile hydrogen spillover and desorption. The in situ spectra characterization and hydrogen spillover experiments further demonstrate the highly improved hydrogen migration over the Ce‐Pd/WO3. Significantly, the real‐time monitoring application of the Ce‐Pd/WO3 device for hydrogen leak (0.1 V/V%) in Al‐air batteries is also verified. This work can shed light on the development of a high‐efficiency H2 sensor via the precise modulation of work functions.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"37 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876151","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

Chelating Solvent Mediated Solvation Structure Enables High-Rate Operation of Ah-Level Li-Ion Batteries in Nonflammable Phosphate Electrolyte 螯合溶剂介导的溶剂化结构使ah级锂离子电池在不可燃磷酸盐电解质中高倍率运行

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-25 DOI: 10.1002/aenm.202500864

Mengchuang Liu, Wei Liu, Ziqi Zeng, Fenfen Ma, Yuanke Wu, Kuijie Li, Wei Zhong, Xin Chen, Shijie Cheng, Jia Xie

{"title":"Chelating Solvent Mediated Solvation Structure Enables High-Rate Operation of Ah-Level Li-Ion Batteries in Nonflammable Phosphate Electrolyte","authors":"Mengchuang Liu, Wei Liu, Ziqi Zeng, Fenfen Ma, Yuanke Wu, Kuijie Li, Wei Zhong, Xin Chen, Shijie Cheng, Jia Xie","doi":"10.1002/aenm.202500864","DOIUrl":"https://doi.org/10.1002/aenm.202500864","url":null,"abstract":"Highly flammable carbonate electrolytes induce significant safety risk for lithium-ion batteries (LIBs), raising concerns about their suitability for large-scale applications. In contrast, non-flammable phosphate electrolytes offer a potential solution, yet the untamed strong interaction of Li+-phosphates and inefficient Li+ diffusion result in sluggish reaction kinetics, which restricts the operation of Ah-level LIBs to rates below 0.2C. Herein, a chelating solvent-mediated ion-solvent coordinated structure is designed to modulate Li+-phosphates interaction. This innovative approach enables a high-efficiency pseduo-structrural diffusion, similar to that observed in high concentration electrolytes, while maintaining a standard concentration of 1 mol L−1 and achieving high Li⁺ conductivity. The operating rate of Ah-level graphite|LiFePO4 cells is increased from 0.2C to 2C, with 1 Ah and 25 Ah cells retaining 73.9% and 71.0% capacity after 1000 and 600 cycles, respectively. Additionally, the maximum temperature of 25 Ah cells during nail penetration is significantly reduced from 338.9 to 200 °C. This strategy provides promising tuition for developing advanced electrolytes.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"8 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872596","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

Functionalized Interlayers in Self-Powered Organic Photodiodes for Enhanced Near-Infrared Sensing (Adv. Energy Mater. 16/2025) 用于增强近红外传感的自供电有机光电二极管的功能化中间层（Adv. Energy Mater. 16/2025）

IF 24.4 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-25 DOI: 10.1002/aenm.202570077

Yongju Lee, Swarup Biswas, Dong Hyun Nam, Jae Won Park, Hyowon Jang, Hyojeong Choi, Juhwan Kim, Dong-Wook Park, Hyeok Kim

引用次数: 0

Unveiling the Role of Nontrivial Electronic Structure and Lattice Softening in the Excellent Thermoelectric Performance of MnGeTe2 Alloys near the Ioffe–Regel Limit 揭示了非平凡电子结构和晶格软化在Ioffe-Regel极限附近MnGeTe2合金优异热电性能中的作用

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-25 DOI: 10.1002/aenm.202500937

Qicai Mei, Chenghao Xie, Jiabei Liu, Yixuan Wang, Jingjing Cui, Lin Liao, Chengyun Liao, Weibin Xu, Songlin Li, Qingjie Zhang, Xinfeng Tang, Gangjian Tan

{"title":"Unveiling the Role of Nontrivial Electronic Structure and Lattice Softening in the Excellent Thermoelectric Performance of MnGeTe2 Alloys near the Ioffe–Regel Limit","authors":"Qicai Mei, Chenghao Xie, Jiabei Liu, Yixuan Wang, Jingjing Cui, Lin Liao, Chengyun Liao, Weibin Xu, Songlin Li, Qingjie Zhang, Xinfeng Tang, Gangjian Tan","doi":"10.1002/aenm.202500937","DOIUrl":"https://doi.org/10.1002/aenm.202500937","url":null,"abstract":"State-of-the-art thermoelectric materials typically exhibit high charge carrier mobility. However, this study reveals an exception in MnGeTe2 alloys, where the room-temperature hole mobility is intrinsically low, approaching the Ioffe–Regel limit. Through heavy alloying with AgSbTe2, the electronic band structure of MnGeTe2 transitions from a single valence band to multiple bands, driven by enhanced spin-orbit coupling due to the incorporation of heavier Ag and Sb elements. This electronic restructuring increases the density of states effective mass by 50%, from 10 me to 15 me, significantly enhancing the Seebeck coefficient despite higher hole concentrations. Remarkably, the carrier mobility remains unchanged, as the mean free path of charge carriers has already reached its minimum. Additionally, heavy alloying induces lattice softening in MnGeTe2, as confirmed by sound velocity measurements. This lattice softening, combined with the alloying effect, reduces the lattice thermal conductivity to its amorphous limit. Further optimization of the Ag/Sb ratio enables precise tuning of carrier density, resulting in an exceptional peak ZT value of 1.7 at 868 K for the Mn0.7Ge0.7Ag0.2Sb0.4Te2 sample — a 60% improvement over pristine MnGeTe2. This work demonstrates the promise of low-mobility systems near the Ioffe–Regel limit for high-performance thermoelectrics, revealing synergistic electronic–lattice interactions.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"37 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872598","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

Exploring Challenging C2+ Products During CO2 Reduction via Machine Learning Acceleration (Adv. Energy Mater. 16/2025) 通过机器学习加速探索二氧化碳减排过程中具有挑战性的C2+产品（能源材料，16/2025）

IF 24.4 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-25 DOI: 10.1002/aenm.202570079

Mingzi Sun, Bolong Huang

引用次数: 0

Effect of Propagating Dopant Reactivity on Lattice Oxygen Loss in LLZO Solid Electrolyte Contacted with Lithium Metal 扩展掺杂反应性对与金属锂接触的LLZO固体电解质中晶格氧损失的影响

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-25 DOI: 10.1002/aenm.202406020

Michael J. Counihan, Zachary D. Hood, Hong Zheng, Till Fuchs, Leonardo Merola, Matilde Pavan, Sebastian L. Benz, Tianyi Li, Artem Baskin, Junsoo Park, Joakim Halldin Stenlid, Xinglong Chen, Daniel P. Phelan, John W. Lawson, Justin G. Connell, Jürgen Janek, Felix H. Richter, Sanja Tepavcevic

{"title":"Effect of Propagating Dopant Reactivity on Lattice Oxygen Loss in LLZO Solid Electrolyte Contacted with Lithium Metal","authors":"Michael J. Counihan, Zachary D. Hood, Hong Zheng, Till Fuchs, Leonardo Merola, Matilde Pavan, Sebastian L. Benz, Tianyi Li, Artem Baskin, Junsoo Park, Joakim Halldin Stenlid, Xinglong Chen, Daniel P. Phelan, John W. Lawson, Justin G. Connell, Jürgen Janek, Felix H. Richter, Sanja Tepavcevic","doi":"10.1002/aenm.202406020","DOIUrl":"https://doi.org/10.1002/aenm.202406020","url":null,"abstract":"Lithium lanthanum zirconium oxide (LLZO) is widely known as the most stable solid electrolyte against lithium metal electrodes. This thermodynamic stability can be lost by the presence of dopants which are required to stabilize the cubic phase of LLZO and can be reduced by lithium metal. However, the role of oxygen in such reactions is taken for granted. In this work, the reduction of Nb-substituted LLZO (Nb-LLZO) is explored by Li metal and shows that interfacial reactions propagate and lead to the decomposition with substantial Nb5+ reduction deep into the bulk electrolyte. Scanning Transmission Electron Microscopy with Energy Dispersive X-ray Spectroscopy and thermogravimetric analyses show much of the reduction is due to oxygen vacancies formed, leading to increased electronic conductivity mapped with conductive Atomic Force Microscopy. Density functional theory calculations indicate oxygen release is favored by increased excess lithiation of Nb-LLZO. Electrochemical impedance of polycrystalline Nb-LLZO shows the continuous evolution of ionically resistive interphases near the lithium metal interface with Nb-LLZO while single crystals show little reactivity at room temperature and self-limiting reduction at 60°C. This work underlines the role of grain boundaries in propagating destructive solid electrolyte reactions and highlights previously unseen mechanisms involving lattice oxygen in LLZO.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"6 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872599","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

Bimetallic Organic Framework-Derived 3D Hierarchical Ni–Cu/MWCNTs as Anode Catalysts for High-Performance, Durable Direct Urea Fuel Cells 双金属有机框架衍生的三维层叠Ni-Cu /MWCNTs作为高性能、耐用直接尿素燃料电池的阳极催化剂

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2025-04-25 DOI: 10.1002/aenm.202405025

A. Vignesh, G. Gnana kumar, Ponniah Vajeeston, Arumugam Manthiram

{"title":"Bimetallic Organic Framework-Derived 3D Hierarchical Ni–Cu/MWCNTs as Anode Catalysts for High-Performance, Durable Direct Urea Fuel Cells","authors":"A. Vignesh, G. Gnana kumar, Ponniah Vajeeston, Arumugam Manthiram","doi":"10.1002/aenm.202405025","DOIUrl":"https://doi.org/10.1002/aenm.202405025","url":null,"abstract":"The electrochemical urea oxidation reaction (UOR) is substantiated as a promising pathway for transforming waste into renewable power. Hollow ball-like architectures composed of 3D carbon shell-encased Ni–Cu nanoparticles in multi-walled carbon nanotubes (Nix-Cuy/MWCNTs) have been synthesized, utilizing a bimetallic organic framework as a soft template in conjunction with chemical vapor deposition. The configurational and electronic traits of the as-formulated catalysts and their impact on charge-transfer processes are elucidated with density functional theory, and their influence on UOR kinetics is then explicated with various electrochemical techniques. The hierarchical porous hollow spherical bundles of Nix-Cuy/MWCNTs accelerate urea utilization efficacy, as their interior and exterior surfaces are exposed to urea fuel. The synergistic interaction between bimetallic nanoparticles and graphitic carbon helps enhance the electron conduction pathways, electrocatalytic activity, and anti-poisoning ability toward UOR. Compared to commercial Ni/C, the Nix-Cuy/MWCNTs catalyst enables direct urea fuel cells (DUFC) with a high-power density (47.3 mW cm−2) and longevity (200 h), benefiting from the energetically favored oxidation of UOR intermediates and suppressed N─C bond cleavage facilitated by the surface and interstitial vacancies in Nix-Cuy/MWCNTs. Moreover, 32.7 mW cm−2 along with resilience against human urine fuel is achieved in DUFC, opening up research endeavors in sustainable energy development.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"6 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872597","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