通过LLZO填充剂提高基于的离子塑料晶体的离子导电性
Kotoko Ariga1, Shuho Akakabe1, Ryotaro Sekiguchi1
1Department of Materials and Life Sciences, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan.
ACS omega
|May 27, 2024
概括
研究人员通过将有机离子塑料晶体与二 (fluorosulfonyl) 胺和Li7La3Zr2O12结合,开发出混合固体电解质. 这种混合材料在固体电解质应用中显示出更好的机械和离子导电性.
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
- 固态化学 固态化学
背景情况:
- 有机离子塑料晶体 (OIPC) 是有前途的固体电解质,但其机械强度和离子导电性较差.
- 现有的OIPC需要改进以满足实际应用的需求.
研究的目的:
- 制造和描述新的有机-无机混合固体电解质.
- 为了研究二 (硫) 胺 (LiFSA) 和LiLa3Zr2O12 (LLZO) 对OIPC特性的影响.
- 为了优化混合电解质组成,以提高性能.
主要方法:
- 使用OIPC ([C2epyr][FSA]),LiFSA和LLZO合成的混合固体电解质.
- 评估了热稳定性,机械性能 (纳米接刚性) 和电化学性能 (离子导电性,循环电压测量).
- 系统地改变LiFSA和LLZO度以确定它们的影响.
主要成果:
- 所有混合电解质都表现出极好的热稳定性.
- 添加LLZO增加了纳米沉积硬度 (HIT).
- 离子导电性超过了原始的OIPC,在25°C时达到2.1 × 10−4 S cm−1 ,具有优化的LiFSA和LLZO含量.
- 较高的LiFSA和中等的LLZO度与较高的离子导电性相关.
- 循环电压测量证实了混合复合材料中的离子导电.
结论:
- 与纯OIPC相比,开发的有机-无机混合固体电解质显示出更好的机械和离子特性.
- 优化LiFSA和LLZO度对于实现高性能固体电解质至关重要.
- 这些混合材料显示出先进固态电池应用的潜力.
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