通过添加异氧化到具有开放金属位点的金属有机框架中的固体电解质
Brian M Wiers1, Maw-Lin Foo, Nitash P Balsara
1Department of Chemistry, University of California, Berkeley, California 94720, USA.
Journal of the American Chemical Society
|September 1, 2011
概括
合成了一种新的固体电解质,Mg2) dobdc) ·0.35LiOi) Pr·0.25LiBF4) ·EC·DEC. 这种材料对固态电池具有有前途的离子导电性.
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:
- 开发固体电解质对于先进的电池至关重要.
- 金属有机框架 (MOF) 为离子运输提供可调节的结构.
- 现有的固体电解质在导电性和稳定性方面面临挑战.
研究的目的:
- 为了合成和表征一种基于Mg的新型固体电解质.
- 评估新材料的离子导电性和传输特性.
- 为了研究固体电解质内的导电机制.
主要方法:
- 通过LiO (i) Pr的吸收和浸泡,合成Mg2·0.35LiO·0.25LiBF·EC·DEC.
- 两点交流阻抗光谱仪用于导电性测量.
- 可变温度测量和单粒子分析以研究运输.
主要成果:
- 合成材料的导电率为3.1 × 10(-4) S/cm 在300 K.
- 低激活能量 (0.15 eV) 表示有效的离子流动性.
- 粒子内部传输被确定为主要的导电机制.
结论:
- 这种新的基于Mg2的固体电解质显示出电池应用的巨大潜力.
- 该材料的特性表明有效的离子导电.
- 了解粒子内部运输是优化未来固体电解质设计的关键.
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