Boosting oxygen reduction activity with low-temperature derived high-loading atomic cobalt on nitrogen-doped graphene for efficient Zn–air batteries

Jiantao Li; Haoyun Liu; Manman Wang; Chao Lin; Wei Yang; Jiashen Meng; Yanan Xu; Kwadwo Asare Owusu; Benli Jiang; Chuanxi Chen; Danian Fan; Liang Zhou; Liqiang Mai

doi:10.1039/C8CC08992B

Boosting oxygen reduction activity with low-temperature derived high-loading atomic cobalt on nitrogen-doped graphene for efficient Zn–air batteries†

Jiantao Li,‡^a Haoyun Liu,‡^a Manman Wang,‡^a Chao Lin,^a Wei Yang,^a Jiashen Meng,^a Yanan Xu,^a Kwadwo Asare Owusu,^a Benli Jiang,^a Chuanxi Chen,^a Danian Fan,^a Liang Zhou

*^a and Liqiang Mai

*^a

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* Corresponding authors

^a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China
E-mail: liangzhou@whut.edu.cn, mlq518@whut.edu.cn

Abstract

High-loading atomic cobalt (12.8 wt%) dispersed on nitrogen-doped graphene was successfully synthesized via considerably low temperature pyrolysis. The catalyst exhibits excellent electrocatalytic performance towards the oxygen reduction reaction with a large limiting diffusion current density of 5.60 mA cm⁻² (10% higher than that of commercial Pt/C), and when acting as the air catalyst of Zn–air batteries, a high open-circuit voltage of >1.40 V and excellent power density are also achieved.

Chemical Communications

Boosting oxygen reduction activity with low-temperature derived high-loading atomic cobalt on nitrogen-doped graphene for efficient Zn–air batteries†

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Boosting oxygen reduction activity with low-temperature derived high-loading atomic cobalt on nitrogen-doped graphene for efficient Zn–air batteries

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