Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6608202 | Electrochimica Acta | 2016 | 8 Pages |
Abstract
A facile route to improve the lithium-storage properties of flake graphite (FG) is proposed through coating pyrolysis carbon from polyvinylidene fluoride (PVDF) assisted by KOH activation. The interplanar distance between the graphene sheets of activated PVDF/FG is enlarged, effectively suppressing the electrode deformation during lithium (de)-intercalation. More edge and porous structures of PVDF/FG arising from KOH activation on graphite flakes contribute to improved electron and ion transport, leading to great improvement in its rate and cycling performances. The initial specific capacity of the activated PVDF/FG is 476.6 mAh gâ1 at 50 mA gâ1 and when the current increases to 1000 mA gâ1, the value still retains 142.6 mAh gâ1.
Keywords
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Jun Chen, Guoqiang Zou, Yan Zhang, Weixin Song, Hongshuai Hou, Zhaodong Huang, Hanxiao Liao, Simin Li, Xiaobo Ji,