聚酰亚胺
材料科学
阳极
水溶液
复合数
多孔性
电化学
离子
静电纺丝
对偶(语法数字)
纳米纤维
复合材料
化学工程
聚合物
化学
电极
有机化学
图层(电子)
艺术
工程类
物理化学
文学类
作者
Gangyong Zhou,Xingyu An,Chunyang Zhou,Yue Wu,Yue-E Miao,Tianxi Liu
标识
DOI:10.1016/j.coco.2020.100519
摘要
Abstract Aqueous ammonium dual-ion batteries (ADIBs), especially those integrating organic electroactive materials and functioning in a mild electrolyte of ammonium sulfate solution, have attracted increasing attentions in the stationary electrochemical storage area due to their inherent safety, sustainability, and environmental friendliness features. Herein, a flexible electroactive polyimide/nitrogen-doped carbon/carbon nanotubes (PI/NDC/CNT) composite nanofiber membrane with highly interconnected conductive porous structure is prepared through electrospinning and in-situ pyrolysis/imidization treatments for ADIB applications. The electroactive PI achieves uniform distribution, high utilization and ultrafast reaction kinetics within PI/NDC/CNT electrode. As a result, the PI/NDC/CNT electrode exhibits high reversible capacity of 161 mA h g−1 at 0.5 A g−1, good rate capability, and satisfying capacity retention over 87.9% after 5000 cycles. Besides, an all-organic aqueous ADIB using PI/NDC/CNT and polyaniline/carbon nanofiber composites as anode and cathode respectively, achieves ultralong cycle stability and high energy density of 114.3 W h kg−1.
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