材料科学
双功能
电催化剂
纳米技术
催化作用
析氧
碳纤维
复合数
电极
电池(电)
无机化学
纳米晶
纳米颗粒
电化学
化学工程
复合材料
有机化学
化学
物理化学
工程类
物理
功率(物理)
量子力学
作者
Liang Gao,Shengming Chang,Zhongyi Zhang
标识
DOI:10.1021/acsami.1c00484
摘要
A novel composite catalyst (CoFeP@C) was constructed by high-quality CoFeP nanoparticles embedded in a N, P dual-doped carbon matrix. These CoFeP nanoparticles are rich in active sites of the oxygen evolution reaction (OER) at surfaces and provide metallic conductivity in their bulk phases. The N, P dual-doped carbon matrix provided abundant active sites of the oxygen reduction reaction (ORR) and formed a conductive network substrate. The ideal composite structure endowed CoFeP@C with highly efficient bifunctional performance for catalyzing both OER and ORR, accordingly making CoFeP@C an ideal catalyst for rechargeable Zn–air batteries. The liquid Zn–air battery of CoFeP@C has achieved a large power density of 143.5 mW/cm2 and can be charged and discharged stably for 200 h (1200 cycles). The solid-state Zn–air battery of CoFeP@C has achieved a power density of 72.6 mW/cm2 and can stably run for 20 h. This work has deepened the understanding of synergistic catalysis and paved one way for the development of high-performance bifunctional catalysts.
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