Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6602969 | Electrochimica Acta | 2018 | 8 Pages |
Abstract
rGO wrapped SiOx with ordered meso-porous structure material is fabricated via a facile route. This meso-porous SiOx/rGO composite, used as anode in LIBs, exhibits a reversible capacity of 580â¯mAh gâ1 under the applied current density of 100â¯mAgâ1 up to 200 cycles. And it still can deliver a reversible capacity of 120â¯mAh gâ1 even at 10,000â¯mAâ¯gâ1 rate. The high cyclic stability and superior rate performance is attributed to the graphene layer as well as the inert products formed in the reduction of SiOx, which can buffer the volume expansion elastically, thus preserve the integrity of the electrode. Moreover, the ordered meso-porous structure can provide high specific surface area, sufficient void space to shorten the pathway of Li ions, improve the electrolyte penetration and enhanced the electrochemical Li ion storage.
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Dan Liu, Congrui Chen, Yanyan Hu, Jorryn Wu, Dong Zheng, Zhi-zhong Xie, Gongwei Wang, Deyang Qu, Junsheng Li, Deyu Qu,