TiO2/graphene sandwich paper as an anisotropic electrode for high rate lithium ion batteries.
TiO2/graphene sandwich paper as an anisotropic electrode for high rate lithium ion batteries.
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DOI：
10.1039/c3nr01349a
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发表时间：
2013-08
期刊：
影响因子：
6.7
通讯作者：
Na Li;Guangmin Zhou;Ruopian Fang;Feng Li;Hui‐Ming Cheng
中科院分区：
文献类型：
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作者：
Na Li;Guangmin Zhou;Ruopian Fang;Feng Li;Hui‐Ming Cheng
我们设计了一种各向异性电极，其中Li（+）离子的插入和扩散是各向异性的，通过控制TiO 2纳米片平行于石墨烯纸表面的生长。该各向异性电极在100 C的超高速率（对应于36 s的充放电）下给出112 mA h g（-1）的重量容量，比参考各向同性电极的重量容量高3倍。结果表明，这种各向异性电极可以用于寻找高功率锂离子电池。
We designed an anisotropic electrode, in which Li(+) ion insertion and diffusion are anisotropic, by controlled growth of TiO2 nanosheets parallel to the surface of graphene paper. The anisotropic electrode gives a gravimetric capacity of 112 mA h g(-1) at an ultra-high rate of 100 C (corresponding to 36 s of charge-discharge), 3 times higher than that of a referenced isotropic electrode. The results indicate that such an anisotropic electrode can be useful in the search for high-power lithium ion batteries.