Juanjuan Cheng, Zhu Jing-tao, Yong Pan, Zengsheng Ma, H. J. Song, Junan Pan, L. Zhenzhen, Chunsheng Lu
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引用次数: 27
Abstract
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.
采用原位溶液法制备了硫镍泡沫正极材料作为锂硫电池的电极。在0.5 C的速率下，锂电池在500次循环后的初始放电容量为1340 mAh g-1和493 mAh g-1。结果表明，在0.1℃~ 5℃范围内，这些锂硫电池具有很高的速率稳定性，库仑效率接近100%。锂硫电池的电化学稳定性主要是由于高度分散的硫和泡沫镍骨架之间的强结合。
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