混合酸盐/减少石墨烯氧化物与聚硫化吸附宿主用于先进的硫电池
Xiaojun Zhao1,2, Yubo Dang1, Hongzhou Ma1
1School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, P. R. China.
Inorganic chemistry
|January 29, 2024
概括
这项研究开发了用于硫 (Li-S) 电池的先进的阿沙里特/减少氧化石墨烯 (RGO) 气凝. 优化的阴极增强了吸附和导电性,显著提高了循环稳定性和性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 纳米技术 纳米技术
背景情况:
- 硫 (Li-S) 电池面临的挑战是聚硫化物吸附和电化学动力学.
- 平衡主体材料极性和电子导电性对于Li-S电池的性能至关重要.
研究的目的:
- 调查 Li-S 电池阴极的阿沙里特/减少氧化石墨烯 (RGO) 气凝中极性和导电性的联合影响.
- 为高性能硫宿主开发一种通用合成方法.
主要方法:
- 制备含有不同含量的阿沙里特的阿沙里特/RGO气凝.
- 气凝特性和电化学性能在Li-S电池的表征.
- 对硫吸附,电子导电性和聚硫化物沉积的评估.
主要成果:
- 优化的S@ascharite/RGO阴极 (73.8重%硫) 显示出极好的速率性能和在1.0°C下500周期稳定性.
- 增强的Mg-S和Li-S结合改善了吸附;RGO框架确保了快速的电子/离子传输.
- 亚沙里特极性是关键,但导电基板对于防止容量减弱至关重要.
结论:
- 阿沙里特/RGO气凝为高性能Li-S电池提供了一个有希望的宿主.
- 均衡的设计策略有效地解决了聚硫化物穿和导电性问题.
- 这种方法为合成先进的硫宿主提供了一种多功能方法.
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