Ultralong nitrogen/sulfur Co‐doped carbon nano‐hollow‐sphere chains with encapsulated cobalt nanoparticles for highly efficient oxygen electrocatalysis

Author:

Zhang Wei123,Guo Xingmei3,Li Cong1,Xue Jiang‐Yan1,Xu Wan‐Ying1,Niu Zheng1,Gu Hongwei1,Redshaw Carl4,Lang Jian‐Ping12ORCID

Affiliation:

1. College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou China

2. State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai China

3. College of Environmental and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang China

4. Department of Chemistry University of Hull Hull UK

Abstract

AbstractThe development of simple and effective strategies to prepare electrocatalysts, which possess unique and stable structures comprised of metal/nonmetallic atoms for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), is currently an urgent issue. Herein, an efficient bifunctional electrocatalyst featured by ultralong N, S‐doped carbon nano‐hollow‐sphere chains about 1300 nm with encapsulated Co nanoparticles (Co‐CNHSCs) is developed. The multifunctional catalytic properties of Co together with the heteroatom‐induced charge redistribution (i.e., modulating the electronic structure of the active site) result in superior catalytic activities toward OER and ORR in alkaline media. The optimized catalyst Co‐CNHSC‐3 displays an outstanding electrocatalytic ability for ORR and OER, a high specific capacity of 1023.6 mAh gZn−1, and excellent reversibility after 80 h at 10 mA cm−2 in a Zn‐air battery system. This work presents a new strategy for the design and synthesis of efficient multifunctional carbon‐based catalysts for energy storage and conversion devices.

Funder

Collaborative Innovation Center of Suzhou Nano Science and Technology

National Natural Science Foundation of China

Priority Academic Program Development of Jiangsu Higher Education Institutions

Publisher

Wiley

Subject

Materials Chemistry,Energy (miscellaneous),Materials Science (miscellaneous),Renewable Energy, Sustainability and the Environment

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