超级电容器
材料科学
铋
石墨烯
纳米复合材料
化学工程
电极
功率密度
电容
纳米技术
化学浴沉积
比表面积
储能
电导率
化学
薄膜
冶金
有机化学
催化作用
工程类
物理化学
功率(物理)
物理
量子力学
作者
Qixun Xia,Nanasaheb M. Shinde,Je Moon Yun,Tengfei Zhang,Rajaram S. Mane,Sanjay Mathur,Kwang Ho Kim
标识
DOI:10.1016/j.electacta.2018.03.168
摘要
Since the discovery of two-dimensional (2D) graphene, a new class of 2D materials with excellent electrical conductivity has recently been attracting attention in studying promising electrode materials in energy storage applications. Herein, bismuth oxychloride nanosheets-immobilised Ti3C2Tx MXene material (TCBOC) is synthesised by a facile and cost-effective chemical bath deposition (CBD) route. The bismuth oxychloride (BiOCl) nanosheets are grown and immobilised on surfaces of Ti3C2Tx-MXene flakes. An electrode based on the TCBOC nanocomposite exhibited a remarkably volumetric specific capacitance of 396.5 F cm-3 at 1 A g−1 and 228.0 F cm-3 at 15 A g−1. Furthermore, a symmetric supercapacitor (SSC) assembled using TCBOC material proves to have a high energy density of 15.2 Wh kg−1 at a power density of 567.4 W kg−1 compared to SSCs using previously reported Ti3C2Tx MXene materials. The SSC shows cycle life retention of 85.0% after 5000 cycles (at 5 A g−1). The enhanced capacitive performance is attributed to the increased surface area due to BiOCl nanosheets anchored on a 2D MXene surface, the activities of BiOCl sheets, and the excellent conductivity of a Ti3C2Tx MXene material.
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