阳极
电化学
复合数
材料科学
锂(药物)
涂层
化学工程
离子
电解质
法拉第效率
电极
电池(电)
循环伏安法
阴极
无机化学
复合材料
化学
有机化学
医学
工程类
内分泌学
物理化学
作者
Wutao Mao,Kecheng Liu,Ge Guo,Guangyin Liu,Ke Bao,Jiali Guo,Min Hu,Weibo Wang,Beibei Li,Kailong Zhang,Yitai Qian
标识
DOI:10.1016/j.electacta.2017.09.072
摘要
In lithium ion batteries anode material is very crucial. Exploring the high-performance anode materials remains a great challenge. Here, Ti2Nb10O29/Ag composite was obtained. Electrochemical measurements demonstrate that Ti2Nb10O29/Ag composite shows good electrochemical performance than pure Ti2Nb10O29, mostly due to enhanced electronic conductivity after Ag-coating. The specific capacities of Ti2Nb10O29/Ag composite can be as high as 253 and 173 mAh g−1 at 1 and 10C, respectively, and the specific capacity is 132 mAh g−1 at 20C. Moreover, the Ti2Nb10O29/Ag composite exhibited excellent cyclic stability, even after 500 cycles, its specific capacity at 10C still stabilized at a large value of 142 mAh g−1, which was in sharp contrast to the corresponding values of pure Ti2Nb10O29 (68 mAh g−1). The high electrochemical performance demonstrated that Ti2Nb10O29/Ag composite is highly promising anode materials for Li-ion batteries.
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