维普中文期刊产品整合服务

Inducing Fe 3d Electron Delocalization and Spin‑State Transition of FeN_(4) Species Boosts Oxygen Reduction Reaction for Wearable Zinc–Air Battery

查看全文 作　　者：Shengmei [1]Chen;Xiongyi [1]Liang;Sixia [2]Hu;Xinliang [1]Li;Guobin [4]Zhang;Shuyun [1]Wang;Longtao [3]Ma;Chi‑Man Lawrence [1]Wu;Chunyi [1]Zhi;Juan Antonio [1]Zapien 高影响力作者 机构地区：[1]Department of Materials Science and Engineering,City University of Hong Kong,Hong Kong 999077,People’s Republic of China;[2]Sustech Core Research Facilities,Southern University of Science and Technology,1088 Xueyuan Blvd,Shenzhen,Guangdong 518055,People’s Republic of China;[3]Frontiers Science Center for Flexible Electronics,Institute of Flexible Electronics,Northwestern Polytechnical University,Xi’an 710072,People’s Republic of China;[4]Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen,Guangdong,518055,People’s Republic of China高影响力机构 出　　处：《Nano-Micro Letters》索引2023年第15卷第4期,共17页高影响力期刊 基　　金：supported by a Grant of the Innovation and Technology Commission of Hong Kong(Project number:ITS/461/18);City University of Hong Kong(Project number:9678179). 摘　　要：Transition metal-nitrogen-carbon materials(M-N-Cs),particularly Fe-N-Cs,have been found to be electroactive for accelerating oxygen reduction reaction(ORR)kinetics.Although substantial efforts have been devoted to design Fe-N-Cs with increased active species content,surface area,and electronic conductivity,their performance is still far from satisfactory.Hitherto,there is limited research about regulation on the electronic spin states of Fe centers for Fe-N-Cs electrocatalysts to improve their catalytic performance.Here,we introduce Ti_(3)C_(2) MXene with sulfur terminals to regulate the electronic configuration of FeN_(4) species and dramatically enhance catalytic activity toward ORR.The MXene with sulfur terminals induce the spin-state transition of FeN_(4) species and Fe 3d electron delocalization with d band center upshift,enabling the Fe(II)ions to bind oxygen in the end-on adsorption mode favorable to initiate the reduction of oxygen and boosting oxygen-containing groups adsorption on FeN_(4) species and ORR kinetics.The resulting FeN_(4)-Ti_(3)C_(2)Sx exhibits comparable catalytic performance to those of commercial Pt-C.The developed wearable ZABs using FeN_(4)-Ti_(3)C_(2)Sx also exhibit fast kinetics and excellent stability.This study confirms that regulation of the electronic structure of active species via coupling with their support can be a major contributor to enhance their catalytic activity. 关 键 词：Fe 3d electron delocalization Spin-state transition Oxygen reduction reaction Wearable zinc-air batteries
相关文献

参考文献(60)

引证文献(3)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费