Carbon-intercalated Ti3C2Tx MXene for high-performance electrochemical energy storage. Issue 46 (9th November 2018)

• Record Type: Journal Article
• Authors: Shen, Lei; Zhou, Xiaoya; Zhang, Xinglin; Zhang, Yizhou; Liu, Yunlong; Wang, Wenjun; Si, Weili; Dong, Xiaochen
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 46(2018)
• Page Start: 23513
• Page End: 23520
• Publication Date: 2018-11-09
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta09600g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Carbon-MXene heterostructures with increased interlayer spacing and surface defects show excellent electrochemical performance for supercapacitor electrodes. Abstract : In this study, carbon-intercalated Ti3 C2 T x MXene (Ti3 C2 T x /C) was prepared through annealing long-chain fatty amines to form carbon interlayers into MXene. With the increase in interlayer spacing due to amine intercalation and enhanced electrical conductivity owing to the in situ formation of carbon between MXene layers, the Ti3 C2 T x /C heterostructure exhibited improved electrochemical performances. Specifically, when serving as a supercapacitor electrode material, the Ti3 C2 T x /C heterostructure displayed high reversible gravimetric capacitance of 364.3 F g −1 at current density of 1 A g −1 . The heterostructures were advantageous for penetration of electrolyte ions into the MXene layers and exhibited excellent electrochemical cycling stability with above 99% retention over 10 000 cycles. The high capacitance and excellent cycling stability demonstrate the great promise of this simple and scalable approach for developing high-performance carbon-based 2D nanomaterials for energy storage.