A Defect-Free Principle for Advanced Graphene Cathode of Aluminum-Ion Battery.

Chen, Hao; Guo, Fan; Liu, Yingjun; Huang, Tieqi; Zheng, Bingna; Ananth, Nimrodh; Xu, Zhen; Gao, Weiwei et al. · Adv Mater · 2017

basic_science · Level V

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Abstract

A conceptually new defect-free principle is proposed for designing graphene cathode of aluminum-ion battery: the fewer the defects, the better the performances. Developed through scalable approach, defect-free graphene aerogel cathode affords high capacity of 100 mAh g<sup>-1</sup> under an ultrahigh rate of 500 C, exceeding defective graphene and previous reports. This defect-free principle can guide us to fabricate better graphene-based electrodes.