在设计的Na3SbP0.4xS4-xOx硫化物固体电解质中通过桥接氧气来提高接口稳定性和离子导电性
Lingjun Shu1, Chengwei Gao1, Yongxing Liu2
1Laboratory of Infrared Material and Devices, Advanced Technology Research Institute, Ningbo University, Ningbo 315211, China; Faculty of Information Science and Engineering, Ningbo University, Ningbo 315211, China.
Journal of colloid and interface science
|September 11, 2023
概括
研究人员通过修改Na3SbS4电解质以和氧来增强固态电池. 这提高了电化学稳定性和离子导电性,为高能,持久的电池铺平了道路.
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:
- 全固态电池对储能充满希望.
- 固体电解质的电化学稳定性有限和离子导电性低,阻碍了它们的应用,特别是金属阳极.
研究的目的:
- 为了研究 (P) 和氧 (O) 兴奋剂对Na3SbS4固体电解质的影响.
- 为了提高离子电池固体电解质的电化学稳定性和离子导电性.
主要方法:
- 改性Na3SbS4电解质的结构特征和电化学测试.
- 制造和测试/固体电解质/对称电池.
主要成果:
- 修改后的电解质Na3SbP0.16S3.6O0.4显著改善了电化学稳定性 (260小时在0.1 mA cm-2).
- 室温离子导电率达到了3.82mS cm-1,相当于商业标准.
- 观察到固体电解质接口的增强稳定性.
结论:
- 用P和O元素合Na3SbS4是一种有效的策略,可以提高电化学稳定性和离子导电性.
- 改进的固体电解质有助于开发高能量密度,长寿命的全固态离子电池.
- 固体电解质接口的稳定性对于所有固态电池的性能至关重要.
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