Ma, Tongxiang, Pan, Yuzheng, Chen, Junyu, Yan, Zhiming, Chen, Buxin, Zhao, Lang, Hu, Liwen, Wen, Liangying and Hu, Meilong (2022) Synthesis of TiC nanotube arrays and their excellent supercapacitor performance. Journal of Materials Chemistry A, 10 (18). pp. 9932-9940. doi:10.1039/d2ta00957a ISSN 2050-7496.

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Abstract

Nanostructured metal carbides have numerous applications in catalysis and energy storage. However, directional construction remains a significant challenge. In this work, a novel strategy for the direct synthesis of nanostructured metal carbides using nanostructured metal oxides as the precursor is developed. TiO2 nanotube arrays (TiO2 NTAs) can be successfully transformed into TiC nanotube arrays (TiC NTAs) through electro-deoxidation and carbonization reactions in a low-temperature molten salt. TiC NTAs have a highly oriented and ordered array structure, which shows the advantages of large specific surface area, direct electron transport, and good chemical stability. Here, TiC NTA electrodes and PVA-H3PO4 electrolyte gel were assembled into a flexible quasi-solid-state supercapacitor to characterize their energy storage performance. The results show that the TiC NTA electrodes exhibit a high areal capacitance of 53.3 mF cm−2, excellent cycling stability, and mechanical flexibility. Moreover, the energy densities can reach 4.6 μW h cm−2 at a power density of 78.9 μW cm−2. This work provides a new strategy for the directed synthesis of nanostructured metal carbides and demonstrates the energy storage application potential of TiC NTAs. It is expected that this work will contribute to the development of the synthesis and application of nanostructured metal carbides.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH):	Nanotubes, Nanostructured materials -- Synthesis, Carbides, Nanotechnology, Power resources -- Research, Supercapacitors
Journal or Publication Title:	Journal of Materials Chemistry A
Publisher:	Royal Society of Chemistry (RSC)
ISSN:	2050-7496
Official Date:	14 May 2022
Dates:	Date Event 14 May 2022 Published 22 March 2022 Available 22 March 2022 Accepted 5 February 2022 Submitted
Volume:	10
Number:	18
Page Range:	pp. 9932-9940
DOI:	10.1039/d2ta00957a
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access (Creative Commons)
Date of first compliant deposit:	30 May 2022
Date of first compliant Open Access:	31 May 2022
RIOXX Funder/Project Grant:	Project/Grant ID RIOXX Funder Name Funder ID 52174299 [NSFC] National Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809

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