用于高能固态电池的弹性体电解质
Michael J Lee1, Junghun Han2, Kyungbin Lee1
1George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
Nature
|January 13, 2022
概括
研究人员开发了新的弹性固态电解质,用于更安全,高能固态电池. 这些先进的电解质克服了当前材料的局限性,使金属阳极具有稳定的性能.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 具有金属阳极的固态电池是传统离子电池的有希望的替代品.
- 当前的固态电解质在实际应用中面临机械性能和电化学性能方面的挑战.
- 树的生长是金属电池的主要安全问题.
研究的目的:
- 开发具有改进的机械和电化学性能的先进固态电解质.
- 为了实现高能固态电池使用金属阳极的安全高效运行.
- 解决现有的固态电解质在实际电池应用中的局限性.
主要方法:
- 制造具有3D互连的塑料晶相的弹性固态电解质.
- 在铜上的弹性体电解质的现场形成,用于涂/脱落.
- 在受限制条件下测试使用高负荷阴极 (LiNi0.83Mn0.06Co0.11O2) 的全电池.
主要成果:
- 弹性体电解质具有机械强度,高离子导电性和低界面电阻.
- 由于体积变化适应,实现了100.0%的库伦比克效率,用于和剥离.
- 在4.5伏和环境温度下表现出稳定的全电池运行,提供>410Wh/kg的特定能量.
结论:
- 新型弹性固态电解质为稳定,高能固态电池提供了可行的策略.
- 这一进步解决了金属电池在机械稳定性和电化学性能方面的关键挑战.
- 开发的系统为下一代储能解决方案铺平了道路.
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