Issue

Vol. 12 (2020)

Enhancing Capacitance Performance of Ti3C2Tx MXene as Electrode Materials of Supercapacitor: From Controlled Preparation to Composite Structure Construction

https://doi.org/10.1007/s40820-020-0415-5
Xiaobei Zang
School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, People’s Republic of China
Jiali Wang
School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, People’s Republic of China
Yijiang Qin
School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, People’s Republic of China
Teng Wang
School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, People’s Republic of China
Chengpeng He
School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, People’s Republic of China
Qingguo Shao
School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, People’s Republic of China
Hongwei Zhu
School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
Ning Cao
School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, People’s Republic of China

Corresponding Author: Ning Cao

caoning1982@gmail.com

Nano-Micro Letters, Vol. 12 (2020), Article Number: 77

Abstract

Ti3C2Tx, a novel two-dimensional layer material, is widely used as electrode materials of supercapacitor due to its good metal conductivity, redox reaction active surface, and so on. However, there are many challenges to be addressed which impede Ti3C2Tx obtaining the ideal specific capacitance, such as restacking, re-crushing, and oxidation of titanium. Recently, many advances have been proposed to enhance capacitance performance of Ti3C2Tx. In this review, recent strategies for improving specific capacitance are summarized and compared, for example, film formation, surface modification, and composite method. Furthermore, in order to comprehend the mechanism of those efforts, this review analyzes the energy storage performance in different electrolytes and influencing factors. This review is expected to predict redouble research direction of Ti3C2Tx materials in supercapacitors.


Highlights:


1 The traditional and novel etching methods are summarized and compared, especially fluorine-free method. The methods for accelerating exfoliation of Ti3C2Tx are classified.
2 The energy storage mechanisms of Ti3C2Tx in different electrolytes are compared. Based on energy storage mechanisms, the influencing factors of morphology and surface functional groups are discussed.
3 In response to the problems of the Ti3C2Tx, strategies for improving capacitance from structure modulation to composite structure construction are summarized and compared.

Keywords

Ti3C2Tx MXene Capacitance performance Storage mechanism Electrode materials Supercapacitor
Zang, Xiaobei, Jiali Wang, Yijiang Qin, Teng Wang, Chengpeng He, Qingguo Shao, Hongwei Zhu, and Ning Cao. 2020. “Enhancing Capacitance Performance of Ti3C2Tx MXene As Electrode Materials of Supercapacitor: From Controlled Preparation to Composite Structure Construction”. Nano-Micro Letters 12 (March):77. https://doi.org/10.1007/s40820-020-0415-5.
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