Conjugated polymerized bimetallic phthalocyanine based electrocatalyst with Fe-N_(4)/Co-N_(4) dual-sites synergistic effect for zinc-air battery  

作　　者：Shuaifeng Wang Zhongfang Li Wenjie Duan Peng Sun Jigang Wang Qiang Liu Lei Zhang Yanqiong Zhuang 

机构地区：[1]School of Chemistry and Chemical Engineering,Shandong University of Technology,Zibo 255049,Shandong,China

出　　处：《Journal of Energy Chemistry》2023年第11期41-53,I0002,共14页能源化学(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(22172093 and 21776167)。

摘　　要：The bifunctional oxygen catalyst is essential for zinc-air batteries(ZABs).Here,an efficient bifunctional oxygen catalyst,PPcFeCo/3D-G,is obtained throughπ-πinteraction between the conjugated polymerized iron-cobalt phthalocyanine(PPcFeCo)with excellent thermal stability and three-dimensional graphene(3D-G).The bimetallic synergistic effect of PPcFeCo,verified by DFT(Density functional theory)calculation,andπ-πinteractions enhances the catalytic activity and durability of the PPcFeCo/3D-G.Regarding electrochemical performance,the PPcFeCo/3D-G with a high electron transfer number(3.98,@0.768 V vs.RHE)has excellent half-wave potential(E_(1/2)=0.890 V vs.RHE)and exhibits outstanding reversibility(ΔE=0.700 V,ΔE=Ej=10-E_(1/2)).The liquid ZAB(LZAB)employed PPcFeCo/3D-G displays a high power density(222 m W cm^(-2)),a specific capacity(792 m A h g-1),and excellent durability(120 h).This work has guiding significance for the preparation of high-efficiency bifunctional catalysts.

关 键 词：Zn-airbattery Bifunctional oxygen catalysts Polymerized iron-cobalt phthalocyanine Bimetallic synergy π-πinteraction 

分 类 号：O643.36[理学—物理化学] TM911.41[理学—化学]