南通大学学报（自然科学版）2024，Vol.23Issue(2)：21-29,9.DOI:10.12194/j.ntu.20240329001
载镍铁双金属微纳米纤维的构筑及其氧催化性能
Construction of nickel and iron bimetal decorated micro-nanofibers and their oxygen catalytic properties
徐若杰 1王哲2
作者信息
- 1. 苏州大学纺织与服装工程学院,江苏苏州 215021
- 2. 苏州大学纺织与服装工程学院,江苏苏州 215021||苏州大学现代丝绸国家工程实验室,江苏苏州 215123
- 折叠
摘要
Abstract
The development of highly efficient non-noble metal bifunctional electrocatalysts for oxygen reduction/evo-lution reaction(ORR/OER)is critical for zinc air batteries(ZABs).In this study,hierarchical micro-nanofibers con-taining nickel(Ni)and iron(Fe)decorated metal-organic frameworks were prepared using electrospinning.These mi-cro-nanofibers were then subjected to high-temperature carbonization,resulting in Ni and Fe anchored porous carbon fibers.The effects of metal types and loading methods on the ORR and OER performance of the carbon fibers were investigated.The results show that the synergistic effect between Ni and Fe can effectively enhance the OER catalytic activity of Ni-based catalysts,but the presence of Ni inhibits the ORR catalytic activity of Fe-based catalysts.By em-ploying a stepwise loading method to spatially confine and separately anchor Ni and Fe atoms,the resulting fiber cata-lyst(Ni@PCF-Fe)exhibits excellent bifunctional catalytic performance:a half-wave potential of 0.793 V(vs.RHE)for ORR and a potential of 1.590 V at a current density of 10 mA/cm2 for OER.The ZABs assembled with Ni@PCF-Fe and RuO2 as air cathode catalysts demonstrate good electrochemical energy storage performance,with an open circuit voltage of 1.43 V and a peak power density of 108.48 mW/cm2.关键词
双功能氧催化剂/过渡金属催化剂/微纳米纤维/氧还原/氧析出/锌空气电池Key words
bifunctional oxygen catalyst/transition metal catalyst/micro-nano fibers/oxygen reduction/oxygen evolu-tion/zinc air battery分类
化学化工引用本文复制引用
徐若杰,王哲..载镍铁双金属微纳米纤维的构筑及其氧催化性能[J].南通大学学报（自然科学版）,2024,23(2):21-29,9.
