Sulfur-Nickel Foam as Cathode Materials for Lithium-Sulfur Batteries
Sulfur-Nickel Foam as Cathode Materials for Lithium-Sulfur Batteries
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DOI：
10.1149/2.0011502eel
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发表时间：
2014-12
影响因子：
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通讯作者：
Juanjuan Cheng;Zhu Jing-tao;Yong Pan;Zengsheng Ma;H. J. Song;Junan Pan;L. Zhenzhen;Chunsheng Lu
中科院分区：
文献类型：
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作者：
Juanjuan Cheng;Zhu Jing-tao;Yong Pan;Zengsheng Ma;H. J. Song;Junan Pan;L. Zhenzhen;Chunsheng Lu
采用原位溶液法制备了硫镍泡沫正极材料，并将其作为锂硫(Li-S)电池的电极材料。在0.5C倍率下，Li-S电池的首次放电容量为1340mAHg-1,500次循环后为493mAHg-1。结果表明，这些Li-S电池具有很高的倍率稳定性，在0.1C~5C的不同倍率下库仑效率接近100%稳定。Li-S电池的电化学稳定性主要是由于高度分散的硫与泡沫镍骨架之间的强烈结合。
Sulfur-nickel foam cathode materials prepared by an in situ solution-based method were served as electrode of lithium-sulfur (Li-S) batteries. At the rate of 0.5 C, the Li-S cells deliver an initial discharge capacity of 1340 mAh g–1 and 493 mAh g–1 after 500 cycles. It is shown that these Li-S cells are of high rate stabilities with a nearly 100% stable coulombic efficiency at various rates from 0.1 C to 5 C. The electrochemical stability of Li-S batteries is mainly due to the strong binding between the highly dispersed sulphur and nickel foam skeletons.