Wet-spinning assembly of nitrogen-doped graphene film for stable graphene-polyaniline supercapacitor electrodes with high mass loading

Autor: Chu, Xingyuan, Huang, Tieqi, Hu, Yueqi, Dong, Ruilin, Luo, Jingyang, Cai, Shengying, Gao, Weiwei, Xu, Zhen, Gao, Chao
Zdroj: Science China Materials; 20240101, Issue: Preprints p1-9, 9p
Abstrakt: Graphene-polyaniline (GP) composites are promising electrode materials for supercapacitors but possessing unsatisfied stability, especially under high mass loading, due to the low ion transmission efficiency and serious pulverization effect. To address this issue, we propose a scalable method to achieve highly wettable GP electrodes, showing excellent stability. In addition, our results demonstrate that the performance of electrodes is nearly independent of the mass loading, indicating the great potential of such GP electrodes for practical devices. We attribute the remarkable performance of GP to the delicate precursor of nitrogen doped graphene film assembled by wet-spinning technology. This report provides a strategy to promote the ion penetrating efficiency across the electrodes and deter the pulverization effect, aiming at the practical GP supercapacitor electrodes of high mass loading. 石墨烯-聚苯胺(GP)复合材料是一种有前途的超级电容器电极材料, 但其稳定性较差, 尤其在负载量高的情况下. 低离子传输效率和严重的粉碎效应是导致这一结果的主要原因. 为了解决这个问题, 我们提出了一种可规模化制备高度可润湿GP电极的方法, 该电极显示出优异的稳定性. 此外, 研究结果表明电极的性能几乎与负载量无关, 因此这种GP电极在实际生产中具有巨大潜力. 通过湿纺技术组装的氮掺杂石墨烯薄膜前驱体使得这种电极材料表现出卓越性能. 这种提高电极间离子渗透效率并阻止粉碎效应的方法, 旨在制备实用型高负载量的GP超级电容器电极.
Databáze: Supplemental Index
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