In situ fabrication of dry/gel bilayer Ti3C2Tx films for high-rate micro-supercapacitors

Shuyu Cui; Jun Tang; Bihua Hu; Peizhi Wang; Jiaxin Guo; Yuanjun Peng; Xingzhu Wang; Baomin Xu

doi:10.1039/d2cc02158g

In situ fabrication of dry/gel bilayer Ti₃C₂T_x films for high-rate micro-supercapacitors

Chem Commun (Camb). 2022 Aug 9;58(64):8954-8957. doi: 10.1039/d2cc02158g.

Authors

Shuyu Cui¹, Jun Tang¹, Bihua Hu¹, Peizhi Wang¹, Jiaxin Guo¹, Yuanjun Peng², Xingzhu Wang^{1

2}, Baomin Xu¹

Affiliations

¹ Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China. xubm@sustech.edu.cn.
² Shenzhen Putai Technology Co., Ltd, Shenzhen, 518055, China.

PMID: 35856771
DOI: 10.1039/d2cc02158g

Abstract

A H₂SO₄-Ti₃C₂T_x ion-gel is in situ fabricated to prevent the restacking of Ti₃C₂T_x for high-rate micro-supercapacitors. The ion-gel pillared by an electrolyte possesses an enlarged interlayer spacing facilitating ion transport. Furthermore, a bilayer structure is designed with dry Ti₃C₂T_x for fast electron conduction. The bilayer Ti₃C₂T_x film shows improved capacitance from 49% to 73% of the initial capacitance at a high scan rate of 200 mV s^-1, along with excellent cycle stability. This study opens up a concise and efficient way for high-performance micro-supercapacitors.