Synthesis and electrochemical performance of SnO2–Fe2O3 composite as an anode material for Na-ion and Li-ion batteries
Synthesis and electrochemical performance of SnO2–Fe2O3 composite as an anode material for Na-ion and Li-ion batteries
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DOI：
10.1016/j.powtec.2015.04.054
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发表时间：
2015-08
影响因子：
5.2
通讯作者：
Xuehang Wu;Wenwei Wu;Yuan Zhou;Xusheng Huang;W. Chen;Qing Wang
中科院分区：
文献类型：
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作者：
Xuehang Wu;Wenwei Wu;Yuan Zhou;Xusheng Huang;W. Chen;Qing Wang
采用水热法在乙醇-水溶液中合成了sno2 - fe2o3复合材料。作为钠离子电池负极材料，在400℃下获得的sno2 - fe2o3复合材料在25 mA g−1下循环30次后，放电容量达到313.1 mAh g−1，相当于第二次放电容量的104.5%。第30次循环库仑效率为95%。同时，sno2 - fe2o3复合材料也是一种优良的锂离子电池负极材料，在200 mA g−1时，其初始放电容量为1643 mAh g−1，初始充电容量为1120 mAh g−1。这种优异的性能是sno2 - fe2o3复合材料形成介孔和大比表面积的结果。
The SnO2–Fe2O3composite is synthesized by a hydrothermal method in ethanol–water solution. When evaluated as anode materials for Na-ion battery, the SnO2–Fe2O3composite sample obtained at 400 °C could deliver a discharge capacity of 313.1 mAh g− 1after the 30th cycle at 25 mA g− 1, which corresponds to 104.5% of the 2nd discharge capacity. Coulombic efficiency is 95% in the 30th cycle. At the same time, SnO2–Fe2O3composite is also an excellent anode material for Li-ion battery, which can deliver initial discharge and charge capacities of 1643 and 1120 mAh g− 1at 200 mA g− 1, respectively. Such excellent performance is a result of the formation of mesopores and large specific surface area of the SnO2–Fe2O3composite.