双功能
电催化剂
催化作用
双功能催化剂
析氧
兴奋剂
材料科学
化学工程
化学
纳米技术
无机化学
电极
电化学
有机化学
物理化学
光电子学
工程类
作者
Shuai Wang,Zhongmei Che,Min Zou,Yue Wu,Min Cui,Yingshu Guo,Mingrui Zhang,Wei Hu,Zihan Zou,Guangqiang Lv,Zexing Wu,Jeonghun Kim,Shude Liu
标识
DOI:10.1016/j.cej.2023.144262
摘要
Fabricating inexpensive and quality bifunctional catalysts for catalyzing oxygen reduction/evolution reactions (ORR/OER) is urgent for the wide application of zinc-air batteries (ZAB). Herein, a bifunctional catalyst, nitrogen-doped graphdiyne (Cu NPs/NGDY) with Cu-C and N-C active moieties, is fabricated through pyrolysis. Cu NPs/NGDY exhibits excellent catalytic performance towards ORR (E1/2 = 0.86 V), stability of 86.5% current retention for 24 h and OER (Ej=10 = 360 mV). Experimental results and theoretical calculations reveal the vital role of Cu-C and nitrogen doping in regulating electrocatalytic activity. Assembled with Cu NPs/NGDY as electrocatalyst, both the liquid-state and flexible ZABs exhibit high power density and barely changed gap between discharge and charge voltage with robust stability, demonstrating tremendous potential in the field of wearable-related equipment. This work develops a simple strategy to fabricate GDY -based bifunctional catalyst.
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