一种二碳酸盐溶剂电解质,用于高性能5V级电池.
Xiaozhe Zhang1, Pan Xu2, Jianing Duan2
1Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis, Université Catholique de Louvain, Louvain-la-Neuve, B-1348, Belgium.
Nature communications
|January 15, 2024
概括
研究人员开发了一种用于高压电池的新电解质. 这种新的配方可实现稳定的金属循环和高阳极稳定性,为先进的储能解决方案铺平了道路.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 与当前的离子技术相比,高压电池提供更高的能量密度.
- 开发与高压正电极和金属阳极兼容的稳定电解质仍然是一个重大挑战.
研究的目的:
- 为5V级电池引入一种新的电解质溶剂.
- 解决现有电解质在阳极稳定性和金属兼容性方面的局限性.
主要方法:
- 研究了一种基于二甲基2,5-二氧化二氧化溶剂的新电解质.
- 在板剥离行为和阳极稳定性方面评估了电解质的性能.
- 使用新型的电解质测试了LiNi0.5Mn1.5O4细胞.
主要成果:
- 电解质显示稳定,没有树的涂层和剥离.
- 达到高达5.2V的阳极稳定性 (相对于Li/Li+).
- 电池在250个循环后保持了97%以上的容量,性能优于传统的碳酸盐电解质.
结论:
- 基于二甲基2,5-二氧化二氧化酸的电解质是5V级电池的有希望的候选者.
- 这种二碳酸盐溶剂为未来的实用电池开发提供了可行的替代方案.
- 这些发现突显了二碳酸盐溶剂对于先进电池电解质的潜力.
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