Abstract

A synthesis method has been developed, and the electrochemical properties of a nanocomposite coating based on polyaniline (Pani) and thermally expanded graphite (TEG) on a substrate of anodized graphite foil in an aprotic lithium electrolyte have been studied. Stable suspensions of Pani–TEG were obtained by mixing a solution of Pani base in formic acid with TEG and subsequent ultrasonic treatment and deposited on the porous surface of activated (anodized) graphite foil. The specific electrochemical capacity of the coating attained 675 F/g at a charge–discharge current of 0.5 mA/cm² in an aprotic electrolyte of 1 M LiClO₄ in propylene carbonate. Upon long cycling for a week (more than 300 cycles), the drop in capacity was not higher than 4%.

中文翻译：

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基于聚苯胺和热膨胀石墨的纳米复合材料在锂非质子电解质中的石墨箔上的电化学行为

摘要

开发了一种合成方法，并研究了基于聚苯胺 (Pani) 和热膨胀石墨 (TEG) 的纳米复合涂层在非质子锂电解质中阳极氧化石墨箔基材上的电化学性能。通过将 Pani 碱在甲酸中的溶液与 TEG 混合并随后进行超声处理，并沉积在活化（阳极氧化）石墨箔的多孔表面上，可以获得稳定的 Pani-TEG 悬浮液。在0.5 mA/cm ²的充放电电流下，在碳酸亚丙酯中的1 M LiClO ₄非质子电解质中，涂层的比电化学容量达到675 F/g 。经过一周的长时间循环（超过300次循环），容量下降不高于4%。