Boosting oxygen reduction activity with low-temperature derived high-loading atomic cobalt on nitrogen-doped graphene for efficient Zn–air batteries
2019
LiThese authors contributed equally to this work., Jiantao | Liu, Haoyun | Wang, Manman | Lin, Chao | Yang, Wei | Meng, Jiashen | Xu, Yanan | Owusu, Kwadwo Asare | Jiang, Benli | Chen, Chuanxi | Fan, Dah-Nien | Zhou, Liang | Mai, L. (Liqiang)
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.
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