Ultrathin 2D TiS2 Nanosheets for High Capacity and Long‐Life Sodium Ion Batteries. Issue 8 (28th January 2019)

• Record Type: Journal Article
• Authors: Hu, Zhe; Tai, Zhixin; Liu, Qiannan; Wang, Shi‐Wen; Jin, Huile; Wang, Shun; Lai, Weihong; Chen, Mingzhe; Li, Lin; Chen, Lingna; Tao, Zhanliang; Chou, Shu‐Lei
• Is Part Of: Advanced energy materials. Volume 9:Issue 8(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-01-28
• Subjects: exfoliation -- few‐atomic layers -- nanosheets -- sodium ion batteries -- TiS2; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201803210
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract: Sodium ion batteries are now attracting great attention, mainly because of the abundance of sodium resources and their cheap raw materials. 2D materials possess a unique structure for sodium storage. Among them, transition metal chalcogenides exhibit significant potential for rechargeable battery devices due to their tunable composition, remarkable structural stability, fast ion transport, and robust kinetics. Herein, ultrathin TiS2 nanosheets are synthesized by a shear‐mixing method and exhibit outstanding cycling performance (386 mAh g −1 after 200 cycles at 0.2 A g −1 ). To clarify the variations of galvanostatic curves and superior cycling performance, the mechanism and morphology changes are systematically investigated. This facile synthesis method is expected to shed light on the preparation of ultrathin 2D materials, whose unique morphologies could easily enable their application in rechargeable batteries. Abstract : Ultrathin TiS2 nanosheets are synthesized through a facile exfoliation method by using a shear‐mixing machine . The unique morphology can effectively buffer the volume change and prevent the electrode materials from pulverization, ensuring a long‐life cycling performance.