阳极
介孔材料
石墨烯
材料科学
氧化物
离子
锂(药物)
无机化学
化学工程
锂离子电池
电化学
法拉第效率
纳米颗粒
纳米技术
电极
化学
催化作用
冶金
有机化学
物理化学
医学
内分泌学
工程类
作者
Dan Liu,Congrui Chen,Yanyan Hu,Jorryn Wu,Dong Zheng,Zhizhong Xie,Gongwei Wang,Deyu Qu,Junsheng Li,Deyu Qu
标识
DOI:10.1016/j.electacta.2018.04.030
摘要
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 580 mAh g−1 under the applied current density of 100 mAg−1 up to 200 cycles. And it still can deliver a reversible capacity of 120 mAh g−1 even at 10,000 mA g−1 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.
科研通智能强力驱动
Strongly Powered by AbleSci AI