硫黄
锂(药物)
复合数
材料科学
电化学
阴极
碳纤维
化学工程
镍
化学
复合材料
冶金
电极
物理化学
内分泌学
工程类
医学
作者
Yue Lu,Xiaona Li,Jianwen Liang,Lei Hu,Yongchun Zhu,Yitai Qian
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2016-01-01
卷期号:8 (40): 17616-17622
被引量:101
摘要
S/NiS2-C composites were fabricated using a sample melting-diffusing-reacting strategy. When the elemental sulfur content in the composite is 54.9 wt%, it shows good cyclic performance and delivers a specific capacity of 730 mA h g-1 after 200 cycles at 0.5 C and 544 mA h g-1 after 500 cycles at 2 C. The elemental sulfur content can be adjusted, and when the elemental sulfur content is increased to 64.8 wt% and 76.0 wt%, the cathodes can maintain a stable cyclic capacity of 386 and 312 mA h g-1 after being discharged/charged at 2 C for 500 cycles respectively. The carbon structure and the uniformly distributed nickel disulfide in the S/NiS2-C composites efficiently stabilizes the polysulfides and also facilitates the conversion of electrochemical reactions.
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