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Indexed by:Journal Papers

Date of Publication:2020-06-01

Journal:CARBON

Included Journals:SCIE

Volume:162

Page Number:431-437

ISSN No.:0008-6223

Abstract:High-performance carbon anodes for sodium-ion batteries (SIBs) were synthesized with bituminous coal as precursor through solvent extraction and carbonization. The solvent extraction endows the coal-based carbon a hierarchical pore structure and enlarged interlayer distance, which can shorten the charge diffusion distance, alleviate the volume variation, and improve the ion diffusion rate. As a result, the modified coal-based electrodes exhibit impressive cycling stability (92% capacity retention after 7000th cycle at 2 A g(-1)) and excellent rate capability (79 mA h g(-1) at 10 A g(-1)). (C) 2020 Published by Elsevier Ltd.