材料科学
超级电容器
煅烧
复合数
多孔性
化学工程
电化学
正交晶系
电容
微球
电流密度
纳米技术
电极
复合材料
化学
催化作用
晶体结构
结晶学
物理
工程类
物理化学
量子力学
生物化学
作者
Peng Zhu,Lixiang Xie,Xianbin Xiao,Hua Gui Yang,Jinlong Jiang
标识
DOI:10.1016/j.jallcom.2022.166586
摘要
In this work, the porous o-(Co,Fe)Se2/Ti2C MXene composite microspheres have been prepared using a facile and simple strategy via in-situ growth of orthorhombic o-(Co,Fe)Se2 on few-layered Ti2C MXene and subsequent vacuum calcination. The porous o-(Co,Fe)Se2/Ti2C composite microspheres exhibits a high reversible capacity of 286.2 mA h g–1 at a current density of 1 A g–1. In addition, the assembled asymmetric supercapacitor demonstrates a competitive energy density (68.9 Wh kg–1 at 800.0 W kg−1) and a robust long cycling stability (65.3 % capacitance retention after 10,000 cycles). The excellent electrochemical performance is described to the unique architecture of porous o-(Co,Fe)Se2/Ti2C microspheres and the synergistic effect of Fe doping and compositing with MXene.
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