化有机聚凝使得一个强大的阳极能够用于储存
Zhengyue Li1, Jiecheng Huang1, Zhiyu Wang1,2
1State Key Lab of Fine Chemicals, Liaoning Key Lab for Energy Materials and Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China. zywang@dlut.edu.cn.
概括
在氧化/碳复合涂料中的兴奋剂会产生稳定的固态电解质间相. 这使得强大的阳极具有延长周期寿命,可用于先进的存储应用.
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:
- (Si) 阳极为离子电池提供了高的理论容量,但由于体积膨胀,其循环稳定性不佳.
- 开发稳定的阳极材料对于下一代储能解决方案至关重要.
研究的目的:
- 开发一种强大的阳极,具有增强的循环稳定性和长周期寿命.
- 调查兴奋剂对Si/SiO2/C复合涂料结构和电化学性能的影响.
主要方法:
- 利用化有机烯聚凝化学方法,在Si阳极上制造F-doped SiO2/C复合涂层.
- 使用先进的分析技术,描述了涂层的组成和结构.
- 评估了离子电池中修改的Si阳极的电化学性能.
主要成果:
- 通过F-doped SiO2 / C复合涂层实现了强大的Si阳极.
- F-doping促进了富含电化学活性较低Si4+物种的涂层的形成.
- 形成了富含LiF的固态电解质介相,增强了阳极稳定性.
- 阳极在高电流密度下表现出 500 个周期的长周期寿命.
结论:
- 兴奋剂是一种有效的策略,可以提高Si阳极的稳定性和性能.
- 开发的F-doped Si阳极对高性能存储应用具有很好的潜力.
- 形成富含LiF的间相是实现长周期寿命的关键.
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