Enhancing the lithium storage capabilities of TiO2 nanoparticles using delaminated MXene supports. Issue 15 (15th October 2018)

• Record Type: Journal Article
• Authors: Xiao, Shuhao; Zhang, Xiaoqiang; Zhang, Junwei; Wu, Shiming; Wang, Jin; Chen, Jun Song; Li, Tingshuai
• Is Part Of: Ceramics international. Volume 44:Issue 15(2018)
• Page Start: 17660
• Page End: 17666
• Publication Date: 2018-10-15
• Subjects: MXene -- TiO2 Nanoparticle -- Structure stability -- Anode -- Li-ion batteries; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.06.228
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: MXenes, an emerging family of two-dimensional materials, were promising electrode materials due to their excellent electronic conductivity and hydrophilicity. MXenes exhibit extraordinary rate performance and cycling stability when serving as the anode materials for Li-ion batteries, but they have relatively low capacities. We thus prepared Ti3 C2 Tx /TiO2 composites using a simple route to coat TiO2 nanoparticles onto the delaminated few-layered MXenes, which functioned as spacers in the composite to suppress the restacking of MXene layers. The sample demonstrated excellent performance in the galvanostatic charge-discharge test, where a reversible capacity of 143 mA h g −1 could still be maintained after 200 cycles at 0.5 A g −1 and a distinct plateau region could be clearly observed in the charge-discharge profiles. Density Theory Function calculation revealed that the hybridization of few-layered MXene was able to improve the structural stability of the composite during the insertion/de-insertion of Li atoms.