文献类型：期刊文献

英文题名：Facile Synthesis of a Highly Efficient and Durable Bifunctional Oxygen Electrocatalyst CFS@CN/F Composite for Rechargeable Zinc-Air Batteries

作者：Song, Shiqi[1];Tang, Maochong[1];Wang, Chupeng[1];Luo, Mingsheng[1];Wang, Xiaoxia[3];Liu, Hui[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Zhuguangya Inst Adv Sci & Technol, Shanghai 201306, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：8

期号：9

起止页码：5963

外文期刊名：ACS APPLIED ENERGY MATERIALS

收录：;EI(收录号：20251718296306);WOS:【SCI-EXPANDED(收录号:WOS:001472508400001)】；

基金：This research was funded by the Xizang Autonomous Region Science and Technology Plan: XZ202402ZY0014 and XZ202401ZY0067.

语种：英文

外文关键词：composite electrocatalysts; electrocatalysis; oxygen reduction reaction; oxygen evolution reaction; rechargeable zinc-air batteries

摘要：Synthesis of bifunctional oxygen electrocatalysts with high ORR and OER catalytic activity is important for the development of next-generation rechargeable zinc-air batteries. CoFeSNC with high ORR catalytic activity and CoNiLDH/FeOOH with high OER catalytic activity are prepared using wet chemistry and ion exchange strategies, respectively. CFS@CN/F composite electrocatalysts are prepared by grinding and mixing CoFeSNC and CoNiLDH/FeOOH together. The introduction of bimetallic sites and weakly electronegative S atoms into M-N-C catalytic materials synergistically improves the adsorption and activation of oxygenated intermediates, effectively overcoming the limitations of single-heteroatom catalytic materials. Space charge effects and built-in electric fields in CoNiLDH/FeOOH heterojunctions improve electron transfer and reduce the OER reaction energy barriers. The CFS@CN/F catalyst exhibits excellent bifunctional electrocatalytic activity (Delta E = 0.689 V vs RHE); the zinc-air battery based on CFS@CN/F shows a high peak power density (183.8 mW cm-2) and specific capacity (792 mAh g-1). This work provides a valuable reference for the design and development of efficient ORR/OER bifunctional electrocatalysts with practical applicability.