聚苯胺
材料科学
超级电容器
电容
复合材料
复合数
电极
聚合物
化学
聚合
物理化学
作者
Juguo Dai,Lili Luo,Zhenbin Tang,Yan Lv,Hongmei Xie,Haiyan Zuo,Chunying Yang,Li Wang,Mizi Fan,Yiting Xu,Lizong Dai
标识
DOI:10.1016/j.compscitech.2021.109240
摘要
How to achieve an effective coupling of inorganic materials and highly efficient electron transfer inside a composite material is a crucial issue in the application of multiple-inorganic composite materials for supercapacitors. Herein, a facile strategy of using a thin-layer polyaniline for the construction of electron transfer channels within the multiple-inorganic composites is proposed. Benefiting from the polyaniline acting as a “bridge” for electron transfer and proper interaction between components of composites, CuS/[email protected]2 (CSPM) composites electrode is equipped with excellent specific capacitance (759.2 F g−1 at 1 A g−1) and cycle stability (92.1% capacitance retention after 6000 cycles) in the three-electrode systems. Asymmetric supercapacitor (ASC) devices assembled by the CSPM composites achieve a specific capacitance of 166.7 F g−1 at 1 A g−1, and the capacitance and coulombic efficiency drop by 14.5% and 4.0% after 5000 cycles, respectively. Impressively, the ASC devices achieve an energy density of 39.1 Wh kg−1 at a power density of 659.9 W kg−1. Furthermore, the theoretical calculations verify that the surface-capacitive contribution of CSPM composites is improved with thin-layer polyaniline channeling (24% higher than [email protected] (CSM) composites at 100 mV s-1). This strategy will provide a new potential way towards the effective coupling of inorganic materials.
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