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Accepted (AM)Open Access (License Unspecified), Open
Journal article
Laser writing of the restacked titanium carbide MXene for high performance supercapacitors
ENERGY STORAGE MATERIALS, v 32, pp 418-424
Nov 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Titanium carbide MXene (Ti3C2Tx, where T-x 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 Ti3C2Tx 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(-1) at 10 mV s(-1) 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 Ti3C2Tx electrodes exhibits a high areal capacitance of 15.03 mF cm(-2) M 10 mV s(-1) with ultrahigh capacitance retention of 33% M 2000 mV s(-1). Moreover, the laser writing process takes only similar to 1 s for an 1 cm x 1 cm square film, showing superior advantages over other methods and potentials in scale-up production.
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Details
- Title
- Laser writing of the restacked titanium carbide MXene for high performance supercapacitors
- Publication Details
- ENERGY STORAGE MATERIALS, v 32, pp 418-424
- Publisher
- ELSEVIER; AMSTERDAM
- Number of pages
- 0
- Grant note
- This work was financially supported by the Fundamental Research (Discipline Arrangement) project funding from Shenzhen Science and Technology InnovationCommittee (GrantNo. JCYJ20170412154554048), the Peacock Team Project from Shenzhen Science and Technology Innovation Committee (GrantNo. KQTD2015033110182370), and theNational Key Research and Development Project from the Ministry of Science and Technology of China (Grants Nos. 2016YFA0202400 and 2016YFA0202404).
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000586658000015
- Scopus ID
- 2-s2.0-85089410518
- Other Identifier
- 991021860674604721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology