High rate capability of ordered mesoporous carbon with platelet graphitic pore walls for lithium ion anodes
2011
Hou, Zhaohui | Zeng, Fanyan | He, Binhong | Tao, Wei | Ge, Chongyong | Kuang, Yafei | Zeng, Jianhuang
An ordered mesoporous carbon (OMC) with controllable molecule crystal and platelet graphitic pore walls, which is directionally grown on the internal pore walls of SBA-15 or anchors at liquid/silica interfaces by molecule engineering, has been investigated as lithium ion anodes. It is found that the OMC exhibits high kinetics, rate and cycling performance. The i₀ and DLᵢ are almost constant after 50 cycles. OMC shows a high reversible specific capacity of 153.9mAh g⁻¹ at the current density as high as 3500mA g⁻¹. The excellent electrochemical performance could be attributed to the presence of the porosity and platelet graphitic pore walls.
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