Ti3C2Tx with a hydroxyl-rich surface for metal sulfides as high performance electrode materials for sodium/lithium storage. Issue 24 (10th June 2021)

• Record Type: Journal Article
• Authors: Han, Qi; Zhou, Yanli; Du, Rong; Xiao, Bo; Cheng, Jianbo; Zhang, Ming; Dong, Caifu; Sun, Xueqin; Jiang, Fuyi; Yang, Jian
• Is Part Of: Journal of materials chemistry. Volume 9:Issue 24(2021)
• Page Start: 14013
• Page End: 14024
• Publication Date: 2021-06-10
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d1ta02753k
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Three kinds of Ti3 C2 T x modified metal sulfide composites have been prepared via a universal one-step strategy. Abstract : Three kinds of Ti3 C2 T x modified metal sulfide composites have been prepared via a universal one-step strategy. First, three Ti3 C2 T x MXene supported MoS3 composites with different surface F/O ratios and layer distances are synthesized. The abundant –OH groups on the surface of LiOH-treated Ti3 C2 T x facilitate the effective bonding with MoS3, forming a robust sandwich-like structure (LF/O-Ti3 C2 T x /MoS3 ). As anode material for sodium-ion batteries (SIBs), it shows outstanding long-term cycling performance in comparison with the other two Ti3 C2 T x supported MoS3 composites. Its reversible capacity can be maintained at 611 mA h g −1 after 1000 long cycles at 2 A g −1, obviously superior to those of single LF/O-Ti3 C2 T x and MoS3 . Besides SIBs, LF/O-Ti3 C2 T x /MoS3 also exhibits satisfying lithium storage performance. Kinetics analysis and theoretical calculation further explain the outstanding performance of LF/O-Ti3 C2 T x /MoS3 . Moreover, LF/O-Ti3 C2 T x modified CuS/SnS2 composites also show similar and excellent electrochemical results for SIBs and LIBs. This facile synthesis strategy opens a door to prepare high-performance Ti3 C2 T x supported conversion-type anode materials for large-scale energy storage.