Laser writing of the restacked titanium carbide MXene for high performance supercapacitors

Tang，Jun1,2; Yi，Wendi1; Zhong，Xiongwei1; Zhang，Chuanfang (John)3; Xiao，Xu4; Pan，Feng2; Xu，Baomin1

2020-11-01

10.1016/j.ensm.2020.07.028

Energy Storage Materials   影响因子和分区

2405-8297

2405-8297

Titanium carbide MXene (TiCT, where T refers to -Cl, –F, –OH and ​= ​O) shows ultrahigh electronic conductivity but restricted rate performance for supercapacitors due to prolonged ion transport caused by the restacking of 2D materials. In this work, an ultrafast laser writing technique is used for alleviating the restacking issue by opening up the restacked layers and creating pores through instantaneous photothermal gasification of interlayer water and partial surface groups. The rate performance of TiCT film is effectively improved after laser writing. By tuning the line density of laser scanning path, the electrochemical performance can be well controlled and an optimized high capacitance of 322 ​F ​g at 10 ​mV ​s is obtained at relative high rate performance, showing a high capacitance retention of 48% as the scan rate increased by 200-fold. As a result, the symmetric microsupercapacitor with laser written TiCT electrodes exhibits a high areal capacitance of 15.03 ​mF ​cm at 10 ​mV ​s with ultrahigh capacitance retention of 33% at 2000 ​mV ​s. Moreover, the laser writing process takes only ~1 ​s for an 1 ​cm ​× ​1 ​cm square film, showing superior advantages over other methods and potentials in scale-up production.

High-rate Laser Restacking Supercapacitors Titanium carbide MXene

SCI ; EI

英语

第一 ; 通讯

Shenzhen Science and Technology InnovationCommittee[JCYJ20170412154554048] ; Peacock Team Project from Shenzhen Science and Technology Innovation Committee[KQTD2015033110182370] ; theNational Key Research and Development Project from the Ministry of Science and Technology of China[2016YFA0202400][2016YFA0202404]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000586658000015

ELSEVIER

20203409063497

Titanium carbide ; Capacitance ; Ultrafast lasers

Electricity: Basic Concepts and Phenomena:701.1 ; Electric Components:704.1 ; Lasers, General:744.1 ; Inorganic Compounds:804.2

2-s2.0-85089410518

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Advanced Materials,Peking University Shenzhen Graduate School,Peking University,Shenzhen,518055,China
3.Laboratory for Functional Polymers,Swiss Federal Laboratories for Materials Science and Technology,Empa,ETH Domain,Dübendorf,Überlandstrasse 129,CH-8600,Switzerland
4.Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute,Drexel University,Philadelphia,19104,United States

Tang，Jun,Yi，Wendi,Zhong，Xiongwei,et al. Laser writing of the restacked titanium carbide MXene for high performance supercapacitors[J]. Energy Storage Materials,2020,32:418-424.

Tang，Jun.,Yi，Wendi.,Zhong，Xiongwei.,Zhang，Chuanfang .,Xiao，Xu.,...&Xu，Baomin.(2020).Laser writing of the restacked titanium carbide MXene for high performance supercapacitors.Energy Storage Materials,32,418-424.

Tang，Jun,et al."Laser writing of the restacked titanium carbide MXene for high performance supercapacitors".Energy Storage Materials 32(2020):418-424.