Two-dimensional sandwich-like Ag coated silicon-graphene-silicon nanostructures for superior lithium storage
Two-dimensional sandwich-like Ag coated silicon-graphene-silicon nanostructures for superior lithium storage
复制标题
二维三明治状银涂层硅-石墨烯-硅纳米结构可实现卓越的锂存储
DOI：
10.1016/j.apsusc.2017.06.031
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发表时间：
2017-12
影响因子：
6.7
通讯作者：
Liang Zhan
中科院分区：
文献类型：
--
作者：
Weiqi Yao;Liang Zhan
Two-dimensional (2D) sandwich-like Ag coated silicon-graphene-silicon (Ag@Si-rGO-Si) nanosheets are designed and synthesized as a novel anode material for superior lithium storage. The mesoporous Si nanofilm grows tightly on the two sides of reduced graphene oxide (rGO), and Ag nanoparticles with a size of 10–50 nm are further coated on the surface of porous Si nanofilm. Such unique features not only provide a short pathway for rapid Li+diffusion and electron transportation, but also can act as a buffering effect to effectively inhibit the huge volume expansion of pure Si during the repeated lithiation/delithiation process. Meanwhile, a conductive network is constructed by the embedded graphene coupled with Ag nanoparticles to overcome the shortage of pure Si with low electrical conductivity. The resultant 2D sandwich-like Ag@Si-rGO-Si electrode exhibits a high reversible capability (1382 mAh g−1at 0.1 A g−1after 100 cycles), long cycle stability (952 mAh g−1at 1 A g−1after 500 cycles) and excellent high-rate performance (863 mAh g−1at 2 A g−1, 565 mAh g−1at 5 A g−1).
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影响因子：
56.9
作者：
Idota, Y;Kubota, T;Miyasaka, T
通讯作者：
Miyasaka, T
影响因子：
9.9
作者：
Cheng, Hua;Lu, Zhou Guang;Li, Yang Yang
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影响因子：
16.6
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影响因子：
6.6
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通讯作者：
Shaw, Leon L.
影响因子：
3.9
作者：
RAIDER, SI;FLITSCH, R;PALMER, MJ
通讯作者：
PALMER, MJ