作为离子电池的插入主体,分层氧硫化物Sr2MnO2Cu2m-0.5Sm+1 (m = 1,2,和3) 作为离子电池的插入主体
Sylvio Indris1, Jordi Cabana, Oliver J Rutt
1Department of Chemistry, State University of New York, Stony Brook, NY 11794-3400, USA.
Journal of the American Chemical Society
|October 13, 2006
概括
具有交替矿和硫化铜层的多层氧硫化物材料显示可逆间隔. 这些新型化合物表现出增强的电化学性能和容量保留,用于储能应用.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 电化学 电化学 电化学
背景情况:
- 层层的氧硫化物对储能充满希望.
- 硫化铜材料由于容量保留不佳而受到影响.
研究的目的:
- 为了合成和描述新的分层氧硫化物Sr2MnO2Cu2m-0.5Sm+1.5Sm+1.
- 为了研究这些材料在间后的电化学特性.
主要方法:
- 电化学合成和表征.
- 离子电池循环测试. 离子电池循环测试.
- 神奇角度旋转核磁共振 (Li MAS NMR) 光谱学.
主要成果:
- 在硫化铜层中实现了可逆间隔.
- 化材料显示出特有的Li MAS NMR信号.
- 与纯铜硫化物相比,分层的氧硫化物表现出更好的容量保留.
结论:
- 层层的框架结构增强了电化学稳定性.
- 硫化物层中的快速Li+和Cu+导电性有助于良好的性能.
- 这些氧硫化物是先进电池材料的有希望的候选物.
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