High‑Valence Transition Metal Modified FeNiV Oxides Anchored on Carbon Fiber Cloth for Efficient Oxygen Evolution Catalysis  

作　　者：Zihe Wu Jiehui Yang Wenjie Shao Menghao Cheng Xianglin Luo Mi Zhou Shuang Li Tian Ma Chong Cheng Changsheng Zhao 

机构地区：[1]College of Polymer Science and Engineering,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,China [2]College of Biomass Science and Engineering,Textile Institute,Sichuan University,Chengdu 610065,China [3]Department of Ultrasound,West China Hospital,Sichuan University,Chengdu 610065,China

出　　处：《Advanced Fiber Materials》2022年第4期774-785,共12页先进纤维材料（英文）

基　　金：National Natural Science Foundation of China(Nos.52173133,51903178,81971622,and 51803134);the Science and Technology Project of Sichuan Province(2021YFH0135,2020YJ0055,and 2020YFH0087);China Postdoctoral Science Foundation(2021M692303);the Post-Doctor Research Project of Sichuan University(No.2021SCU12013);the 1・3・5 Project for Disciplines of Excellence,West China Hospital,Sichuan University(No.ZYJC21047);Prof.Cheng acknowledges the financial support of the State Key Laboratory of Polymer Materials Engineering(Grant No.sklpme2021-4-02);Fundamental Research Funds for the Central Universities,and Thousand Youth Talents Plan.Dr.S.Li acknowledges the financial support by the Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)under Basismodul,Eigene Stelle(LI 3545/1-1).

摘　　要：Developing efficient and durable non-noble metal-based oxygen evolution catalysts is of great importance for electrochemical water splitting.Here,we report a new and facile strategy for controllable synthesis of high-valence Mo modified FeNiV oxides as efficient OER catalysts.The Mo-dopant displays a significant influence on the valence state of Fe species in the catalysts,which lead to tunable OER performance.When the feed ratio of Mo-dopant is 5%,the Mo-modified FeNiV oxide shows the best OER performance in terms of low overpotential(237 mV at the current density of 10 mA cm^(−2)),Tafel slope(38 mV per decade),and high mass activity,which exceeds its counterparts and most reported OER catalysts.Furthermore,by assembling the catalyst with a carbon fiber cloth,the fabricated water-splitting device exhibits excellent activity and longterm durability in alkaline electrolyte compared with commercial catalysts equipped device.This work not only provides a series of Mo-modified FeNiV-based oxides as high-performance OER catalysts but also offers a new pathway to tune the charge states of OER active centers.

关 键 词：ELECTROCATALYSTS Transition metal-based materials Oxygen evolution reaction High-valence metals Water splitting 

分 类 号：O64[理学—物理化学]