Hierarchical NiFe LDH/N-doped Co/nickel foam as highly active oxygen evolution reaction electrode for anion exchange membrane water electrolysis  

作　　者：Jiansheng Wang Yongsheng Wang Xiaoxuan Guo Mengting Chen Jinjie Fang Xiaojie Li Wei Zhu Zhongbin Zhuang 

机构地区：[1]State Key Lab of Organic-Inorganic Composites and Beijing Advanced Innovation Center for Soft Matter Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China [2]Beijing Key Laboratory of Energy Environmental Catalysis,Beijing University of Chemical Technology,Beijing 100029,China [3]PetroChina Shenzhen New Energy Research Institute Co.,Ltd.,Shenzhen 518054,China

出　　处：《Nano Research》2025年第2期280-289,共10页纳米研究(英文版)

基　　金：The authors acknowledge the financial support by the National Key Research and Development Program of China(No.2022YFA1504000);the National Natural Science Foundation of China(Nos.22101016 and 22279004);China National Petroleum Corporation Basic Forward-looking Science and Technology Project(No.2023ZZ1202).

摘　　要：Anion exchange membrane water electrolyzers(AEMWEs)are emerging as a promising technology due to the high performance and low cost.However,the development of highly active and stable non-precious metal-based catalysts for the anodic oxygen evolution reaction(OER)remains a great challenge.In this study,we present a top-down construction strategy for anode design,resulting in a hierarchical NiFe layered double hydroxide(LDH)/N-doped Co/nickel foam(NF)electrode synthesized via a hydrothermal-gas phase nitridation–electrodeposition method.This electrode features NiFe LDH nanoplates grown on N-doped Co nanowires supported by nickel foam substrates.The NiFe LDH/N-doped Co/NF electrode demonstrates exceptional performance,achieving a current density of 100 mA·cm^(-2) at a low overpotential of 262 mV with minimal attenuation of just 7 mV NiFe LDH/N-doped Co/NF RuO_(2)/NF NiFe LDH/N-doped Co/NF after 100 h of operation.When assembled into an AEMWE,the system requires only 1.63 V to achieve a current density of 1 A·cm^(-2),surpassing the performance of most reported catalysts.The N-doped Co nanowires are shown to enhance both activity and stability by increasing the electrode’s surface area and reinforcing the catalyst–support interaction.

关 键 词：water electrolysis oxygen evolution reaction hierarchical structure synergistic effect 

分 类 号：O64[理学—物理化学]