Rolling flexible double-MXenes Ti3C2Tx/V2CTx hybrid films for microsupercapacitors

Xu，Shuaikai1; Yang，Hongpeng1; Li，Yubing1; Huang，Haifu1; Liang，Xianqing1; Wang，Yuanhao3; Hu，Qing3; Wei，Guodong1,4; Yang，Ya1,2

2023-05-15

10.1016/j.cej.2023.142645

Chemical Engineering Journal   Impact Factor & Quartile

1385-8947

Two-dimensional (2D) MXenes with slit-shaped ion diffusion channels have been hot candidates for flexible microsupercapacitors (MSCs), while the large-scale manufacturing of MSCs based on MXene-based films remains a challenge. Herein, different MXenes, TiCT and VCT nanosheets were stacked and rolled into large-area double-MXenes hybrid films. Then, the large-area hybrid films can be efficiently processed into MSCs by the laser-cutting method. Embedding TiCT nanosheets between VCT layers to impede the self-restacking of VCT and expand the interlayer spacing resulted in high capacitance up to 496F g (2.3F cm) and good rate performance of the hybrid films. The assembled all-solid-state MSCs delivered a high energy density of 4.9 mWh g at 350 mW g and long cycling life. Moreover, serving as a power source unit, the MSCs can power a piezoresistive sensor to capture the changes in external pressures. The proposed rolling method for fabricating large-area double-MXenes hybrid films and MSCs was also applicable for other MXenes and 2D nanomaterials, which promoted their applications in flexible MSCs and portable electronic devices.

Hybrid films Microsupercapacitor MXene Piezoresistive sensor

English

Others

Booz Allen Foundation[2020JJB120060];Booz Allen Foundation[2021AC19174];Booz Allen Foundation[2021YFA1201604];Booz Allen Foundation[52072041];Booz Allen Foundation[52202224];Booz Allen Foundation[JQ21007];Booz Allen Foundation[Y8540XX2D2];

ENGINEERING

2-s2.0-85151565718

Scopus

1.Guangxi Key Laboratory of Electrochemical Energy Materials,Guangxi Novel Battery Materials Research Center of Engineering Technology,Center on Nanoenergy Research,College of Physics Science and Technology,Guangxi University,Nanning,530004,China
2.CAS Center for Excellence in Nanoscience,Beijing Key Laboratory of Micro-nano Energy and Sensor,Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing,101400,China
3.SUSTech Engineering Innovation Center,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
4.Materials Institute of Atomic and Molecular Science,School of Physics and Energy,Shaanxi University of Science and Technology,Xi'an,Shaanxi,710021,China

Xu，Shuaikai,Yang，Hongpeng,Li，Yubing,et al. Rolling flexible double-MXenes Ti3C2Tx/V2CTx hybrid films for microsupercapacitors[J]. Chemical Engineering Journal,2023,464.

Xu，Shuaikai.,Yang，Hongpeng.,Li，Yubing.,Huang，Haifu.,Liang，Xianqing.,...&Yang，Ya.(2023).Rolling flexible double-MXenes Ti3C2Tx/V2CTx hybrid films for microsupercapacitors.Chemical Engineering Journal,464.

Xu，Shuaikai,et al."Rolling flexible double-MXenes Ti3C2Tx/V2CTx hybrid films for microsupercapacitors".Chemical Engineering Journal 464(2023).