Construction of Monolayer Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene on Nickel Foam under High Electrostatic Fields for High-Performance Supercapacitors
Liyong Zhang,
Jijie Chen,
Guangzhi Wei,
Han Li,
Guanbo Wang,
Tongjie Li,
Juan Wang,
Yehu Jiang,
Le Bao,
Yongxing Zhang
Affiliations
Liyong Zhang
Department of Mechanical Engineering, Anhui Science and Technology University, Chuzhou 235000, China
Jijie Chen
Department of Mechanical Engineering, Anhui Science and Technology University, Chuzhou 235000, China
Guangzhi Wei
Department of Mechanical Engineering, Anhui Science and Technology University, Chuzhou 235000, China
Han Li
Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Anhui Province Key Laboratory of Intelligent Computing and Applications, Anhui Province Industrial Generic Technology Research Center for Alumics Materials, Huaibei Normal University, Huaibei 235000, China
Guanbo Wang
Jiangsu Zhonggong High-End Equipment Research Institute Co., Ltd., Taizhou 235000, China
Tongjie Li
Department of Mechanical Engineering, Anhui Science and Technology University, Chuzhou 235000, China
Juan Wang
Department of Mechanical Engineering, Anhui Science and Technology University, Chuzhou 235000, China
Yehu Jiang
Anhui Zhongxin Technology Co., Ltd., Chuzhou 235000, China
Le Bao
Department of Mechatronics Engineering, Hanyang University, Ansan 15588, Republic of Korea
Yongxing Zhang
Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Anhui Province Key Laboratory of Intelligent Computing and Applications, Anhui Province Industrial Generic Technology Research Center for Alumics Materials, Huaibei Normal University, Huaibei 235000, China
Ti3C2Tx MXene, as a common two-dimensional material, has a wide range of applications in electrochemical energy storage. However, the surface forces of few-layer or monolayer Ti3C2Tx MXene lead to easy agglomeration, which hinders the demonstration of its performance due to the characteristics of layered materials. Herein, we report a facile method for preparing monolayer Ti3C2Tx MXene on nickel foam to achieve a self-supporting structure for supercapacitor electrodes under high electrostatic fields. Moreover, the specific capacitance varies with the deposition of different-concentration monolayer Ti3C2Tx MXene on nickel foam. As a result, Ti3C2Tx/NF has a high specific capacitance of 319 mF cm−2 at 2 mA cm−2 and an excellent long-term cycling stability of 94.4% after 7000 cycles. It was observed that the areal specific capacitance increases, whereas the mass specific capacitance decreases with the increasing loading mass. Attributable to the effect of the high electrostatic field, the self-supporting structure of the Ti3C2Tx/NF becomes denser as the concentration of the monolayer Ti3C2Tx MXene ink increases, ultimately affecting its electrochemical performance. This work provides a simple way to overcome the agglomeration problem of few-layer or monolayer MXene, then form a self-supporting electrode exhibiting excellent electrochemical performance.
