Release Time:2020-09-22  Hits:

Indexed by: Journal Article

Date of Publication: 2020-10-15

Journal: MATERIALS LETTERS

Included Journals: SCIE

Volume: 277

ISSN: 0167-577X

Key Words: Carbon materials; Potassium ion battery; Anode; Texture; Coal-based mesophase pitch

Abstract: Stacked tile-like carbon sheets (STCSs) with highly orientated carbon clusters was synthesized through a novel capillary force-induced nano-rubbing method. Compared to conventional carbon nanosheets with disordered carbon clusters, STCSs exhibits high reversible capacity (314 mAh g(-1) at 0.05 A g(-1)), excellent retention (73.2% in 1000th cycle) and high rate capacity (145 mAh g(-1) at 5.0 A g(-1)). The superior electrochemical performance of STCSs could be ascribed to the high orientation of carbon clusters, which facilitates the diffusion of K+ and transportation of electron. (C) 2020 Elsevier B.V. All rights reserved.