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题名: Vertical graphene nanowalls coating of copper current collector for enhancing rate performance of graphite anode of Li ion battery: The merit of optimized interface architecture
作者: Liu, XF;  Wang, D;  Zhang, BS;  Luan, C;  Qin, TT;  Zhang, W;  Wang, D;  Shi, XY;  Deng, T;  Zheng, WT
发表日期: 2018-4-1
摘要: Carbon coating has been attracting wide interests as optimum protection technology for Li ion batteries. Recently, carbon-coating has been considered as effective modification for copper/aluminum current collector. Although rate performance and lifetime of electrodes have been widely investigated, interfacial insight remains very superficial, hampering considerable improvement of electrode performance. Here we propose mechanistic models of double interfaces: one interface locates between Cu and active materials, and the other is referred to as solid electrolyte interphase (SEI) film coating on the current collector. Then vertical graphene nanowalls coated copper (VG) was prepared to reduce interfacial resistance of SEI film derived from an amorphous carbon coating layer. As a result, it exhibited a good rate performance with similar to 190 mAh/g at 3 C, in contrast with similar to 160 mAh/g for commercial carbon-coated copper (CC) and similar to 90 mAh/g for traditional bare copper (BC). (c) 2018 Elsevier Ltd. All rights reserved.
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Recommended Citation:
Liu, XF,Wang, D,Zhang, BS,et al. Vertical Graphene Nanowalls Coating Of Copper Current Collector For Enhancing Rate Performance Of Graphite Anode Of Li Ion Battery: The Merit Of Optimized Interface Architecture[J]. Electrochimica Acta,2018,268:234-240.

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