Co7Fe3 Nanoparticles Confined in N-Doped Carbon Nanocubes for Highly Efficient, Rechargeable Zinc–Air Batteries

作者：Tengxiu Tu, Xiaofang Zhou, Pengfang Zhang, Liang Tan, Zhifeng Xu, Meng-qin Liu, Wenyi Li, Xiao‐Min Kang, Yijin Wu, Jianzhong Zheng · 发表于：ACS Sustainable Chemistry & Engineering · 年份：2022 · DOI：10.1021/acssuschemeng.1c08618 · 被引用次数：22 · 研究领域：Electrocatalysts for Energy Conversion、Advanced battery technologies research、Advancements in Battery Materials

Active component management and microengineering of metal nanoparticles are significant challenges for efficient M/N/C electrocatalysts, as a crucial electrode material for reversible zinc–air batteries, because of the lack of a multifunctional structural strategy in the electrocatalytic preparation process. Here, a convenient, one-step pyrolysis method was introduced into the preparation process of a difunctional electrocatalyst, an Fe-, Co-, and N-codoped carbon-based cube hybrid (Co 7 Fe 3 /CFNC) with abundant active components, including metallic Co 7 Fe 3 nanoparticles and Fe/Co–N x species. The as-constructed Co 7 Fe 3 /CFNC demonstrates impressive activity/stability for ORR/OER. Moreover, practical zinc–air battery building with Co 7 Fe 3 /CFNC electrocatalysts reveals a superior cycling stability for 224 h. Our work could educate a new applicable branch for designing multifunctional catalysts and regulating their active sites to apply the energy and environment.