超级电容器
纳米片
材料科学
固态
热液循环
兴奋剂
电容感应
纳米技术
碳纤维
光电子学
化学工程
复合材料
电容
电极
化学
复合数
工程类
电气工程
物理化学
作者
Wenhan Jia,Hao Wu,Yunxin Zheng,Ziyi Liu,Gaotuo Cai,Jianfeng Wen,Guanghui Hu,Tao Tang,Xinyu Li,Li Jiang,Zhiyong Wang,Ming Li,Haifu Huang
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2023-02-06
卷期号:6 (4): 2570-2581
被引量:13
标识
DOI:10.1021/acsaem.2c04044
摘要
Herein, we demonstrate the enhanced pseudocapacitive performance of a MoS2-based flexible supercapacitor by the co-doping strategy of cations and anions. The MoS2 nanosheet arrays on carbon cloth are directly doped with N and Co atoms through a simple hydrothermal process. The obtained cation and anion co-modified MoS2 (N-Co-MoS2) shows improved electron transport efficiency and enhanced active sites for MoS2. According to the first-principles calculations, N-Co-MoS2 has a unique band structure and high electrical conductivity. As expected, N-Co-MoS2 shows higher capacitive performance with 5072.5 mF cm–2 and a better cycle life (retaining 100% capacitance after 10,000 cycles) than pure MoS2. Furthermore, a solid-state flexible N-Co-MoS2 supercapacitor device is fabricated to demonstrate excellent mechanical stability with a specific capacitance of 3236 mF cm–2 and a stable cycle capacitance of 75.56% after 5000 cycles. In our work, we have provided a reference for preparing MoS2-based materials with good supercapacitive performance.
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