炭黑
聚酰亚胺
复合数
材料科学
阴极
聚合
碳纤维
电池(电)
复合材料
原位聚合
锂(药物)
聚合物
锂离子电池
化学工程
化学
图层(电子)
物理化学
内分泌学
工程类
功率(物理)
天然橡胶
物理
医学
量子力学
作者
Guangfeng Zhang,Zhengming Xu,Ping Liu,Yuezeng Su,Tao Huang,Ruili Liu,Xin Xi,Dongqing Wu
标识
DOI:10.1016/j.electacta.2017.12.075
摘要
In this work, a facial in-situ polymerization strategy is developed for the first time to fabricate the composites of polyimide and carbon black (PI/CBs) by the condensation of 1,2,4,5-benzenetetracarboxylic anhydride and p-phenylenediamine with the presence of carbon black. This composition method can effectively suppress the crystallization of PI and thus allows the sufficient contact of PI and carbon black. As the cathode material in LIBs, the PI/CB composite manifests an extraordinary capacity of 182 mAh g−1 at 0.1 A g−1, close to the theoretical value of PI. Moreover, the capacity of the PI/CB composite can be retained as 116 m Ah g−1 even at an ultrahigh current density of 10 A g−1, outperforming the recently reported polymer LIB cathodes. Under the same conditions, the mechanical mixture of highly crystallized PI sheets and carbon black shows a much poorer performance. The approach demonstrated herein is expected to be further applied as an effective processing method to build up high performance electrodes with organic species in secondary batteries.
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