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Indexed by:期刊论文

Date of Publication:2020-10-15

Journal:MATERIALS LETTERS

Included Journals:SCIE

Volume:277

ISSN No.: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.