Yolk-shell FeCu/NC electrocatalyst boosting high-performance zinc-air battery  

作　　者：Chen Liang Tianyu Zhang Shilun Sun Aijuan Han Zenghui Qiu Haijun Xu Junfeng Liu 

机构地区：[1]State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China [2]College of Mathematics&Physics,Beijing University of Chemical Technology,Beijing 100029,China [3]Beijing Bioprocess Key Laboratory,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Nano Research》2024年第9期7918-7925,共8页纳米研究（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2022YFC2105900).

摘　　要：Iron-nitrogen-carbon single-atom catalysts(Fe-N-C SACs)are widely acknowledged for their effective oxygen reduction activity,however,their activity requires further enhancement.Meanwhile,additional structural optimization is necessary to enhance mass transport and achieve higher power density in practical applications.Herein,using ZIF-8 as a template,we synthesized yolk-shell catalysts featuring complex sites of Fe single atoms and Cu nanoclusters(y-FeCu/NC)via partial etching and liquid-phase loading.The synthesized y-FeCu/NC catalyst exhibits high specific surface area and mesoporous volume.Combined with the advantages of highly active sites and yolk-shell structure,the y-FeCu/NC catalyst demonstrated outstanding catalytic performance in the oxygen reduction reaction,achieving a half-wave potential(E_(1/2))of 0.97 V in 0.1 M KOH.As a practical energy device,Zn-air battery(ZAB)assembled with y-FeCu/NC catalyst achieved a remarkable power density of 356.3 mW·cm^(-2),representing an improvement of approximately 28.5%compared to its solid FeCu/NC counterpart.Furthermore,it showcased impressive stability,surpassing all control samples.

关 键 词：atomic Fe-N4 sites Cu nanoclusters yolk-shell structure oxygen reduction reaction zinc-air battery 

分 类 号：O64[理学—物理化学]