Decoration of graphene with silicon nanoparticles by covalent immobilization for use as anodes in high stability lithium ion batteries
Decoration of graphene with silicon nanoparticles by covalent immobilization for use as anodes in high stability lithium ion batteries
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通过共价固定用硅纳米颗粒装饰石墨烯，用作高稳定性锂离子电池的阳极
DOI：
10.1016/j.jpowsour.2013.04.025
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发表时间：
2013-10
影响因子：
9.2
通讯作者：
Sun, Kening
中科院分区：
文献类型：
--
作者：
Zhang, Li;Meng, Yufeng;Zhang, Naiqing;Sun, Kening
通过共价固定化和随后在H2+ Ar气氛中加热来制备Si纳米颗粒-石墨烯杂化物。在X射线衍射中没有石墨（002）峰，表明通过这种方法合成的杂化物防止石墨烯纳米片再团聚。透射电子显微镜显示Si纳米颗粒在石墨烯上的均匀分布。恒电流充电/放电测试表明，Si纳米颗粒-石墨烯混合物具有比原始Si纳米颗粒和Si纳米颗粒/石墨烯混合物好得多的电荷容量保持率。研究了混合物中纳米硅颗粒和石墨烯的重量比与容量的关系。结果表明，当Si：G质量比为15：1时，复合材料的循环性能最稳定，充放电50次后，第1次循环容量保持率为92.7%。第1次Li+插入容量为1297 mAh g−1，第50次Li+插入容量为1203 mAh g−1。
Si nanoparticle–graphene hybrids are fabricated by covalent immobilization and subsequent heating in a H2+ Ar atmosphere. The absence of a graphite (002) peak in X-ray diffraction shows that the hybrid synthesized by this approach prevents graphene nanosheets re-agglomerating. Transmission electron microscopy shows a homogeneous distribution of Si nanoparticles on the graphene. Galvanostatic charge/discharge tests demonstrate that the Si nanoparticle–graphene hybrid has much better charge capacity retention than pristine Si nanoparticles and a Si nanoparticle/graphene mixture. The relationship of the capacity to the weight ratio of Si nanoparticles and graphene in the hybrid has been investigated. The results reveal that the hybrid of with a weight ratio 15:1 (Si:G) exhibits the most stable cycle performance, which retains 92.7% capacity of the 1st cycle after 50 charge/discharge cycles. The 1st Li+insertion capacity is 1297 mAh g−1, and the 50th Li+insertion capacity is 1203 mAh g−1.
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影响因子：
10.9
作者：
Stankovich, Sasha;Piner, Richard D.;Ruoff, Rodney S.
通讯作者：
Ruoff, Rodney S.
影响因子：
19
作者：
J. Saint;M. Morcrette;D. Larcher;L. Laffont;Shane Beattie;Jean-Paul Pérès;David Talaga;Michel Couzi
通讯作者：
J. Saint;M. Morcrette;D. Larcher;L. Laffont;Shane Beattie;Jean-Paul Pérès;David Talaga;Michel Couzi
用于高容量锂存储的巢状硅纳米球
影响因子：
29.4
作者：
Ma, Hua;Cheng, Fangyi;Liang, Jing
通讯作者：
Liang, Jing
影响因子：
10.9
作者：
Yasuhiro Yamada;Takeshi Tanaka;K. Machida;S. Suematsu;Kenji Tamamitsu;H. Kataura;H. Hatori
通讯作者：
Yasuhiro Yamada;Takeshi Tanaka;K. Machida;S. Suematsu;Kenji Tamamitsu;H. Kataura;H. Hatori
影响因子：
10.8
作者：
Song, Taeseup;Xia, Jianliang;Paik, Ungyu
通讯作者：
Paik, Ungyu