MOF-derived CoP/CuP hybrids as bifunctional electrocatalysts for zinc-air batteries

被引:3
作者
Liu, Huimin [2 ]
Zong, Xing [1 ]
Wang, Yongfei [1 ,2 ]
Hu, Zhizhi [2 ]
Zhang, Zhiqiang [2 ]
机构
[1] Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan 114051, Liaoning, Peoples R China
[2] Univ Sci & Technol Liaoning, Sch Chem Engn, 185 Qianshan Zhong Rd, Anshan 114051, Peoples R China
基金
中国国家自然科学基金;
关键词
BIMETALLIC PHOSPHIDE; OXYGEN EVOLUTION; CARBON; HETEROSTRUCTURE; NANOPARTICLES; ORR;
D O I
10.1039/d4nj01346h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Transition metal phosphides (TMPs) have attracted extensive interest to catalyze the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). However, the development of TMPs with high conductivity is a great challenge. Herein, we report hybrids of cobalt phosphide (CoP) and copper phosphide (CuP) strongly coupled with ZIF-67 derived carbon as bifunctional ORR/OER electrocatalysts (CoP/CuP@NC). The as-prepared CoP/CuP@NC catalysts exhibit delightful activity and stability toward the ORR (E1/2 = 0.86 V) and the OER (E10 = 1.61 V). Moreover, the assembled Zn-air battery exhibits a small charge-discharge voltage gap and excellent stability. These remarkable electrocatalytic capabilities stem from the combined impact of active CoP/CuP components and the structural framework derived from ZIF-derived materials. This work provides a meaningful strategy for constructing high-performance bifunctional electrocatalysts for commercial Zn-air batteries. The finely distributed CoP/CuP nanoparticles and the distinctive supporting structure exhibit remarkable electrocatalytic performance in both the ORR and the OER.
引用
收藏
页码:9534 / 9541
页数:8
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