一个新的类型的氧化固体电解质NaNbCl6-2xO为固态电池
Steven Kmiec1, Erick Ruoff1, Arumugam Manthiram1
1Materials Science and Engineering Program and Texas Materials Institute The, University of Texas at Austin, Austin, Texas, 78712, USA.
Angewandte Chemie (International ed. in English)
|September 30, 2024
概括
研究人员开发了新的基于的氧化固态电解质,用于更安全,更便宜的电池. 这种NaNbCl4O材料显著提高了离子导电性,使电池性能更好.
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:
- 基于的电池为离子技术提供了具有成本效益和丰富的替代品.
- 固态电池有望提高安全性,但需要先进的电解质.
- 目前的基于的固态电解质 (SSEs) 缺乏高离子导电性和氧化稳定性.
研究的目的:
- 引入一种新的基于的氧化固态电解质 (SSEs) 类.
- 为了研究NaNbCl6-2xOx氧化的合成和特性.
- 为了评估这些电解质在固态电池中的性能.
主要方法:
- 简单的机械化学合成NaNbCl6-2xOx氧化物.
- 使用23Na和93Nb神奇角度旋转核磁共振 (MAS NMR) 谱学和X射线衍射 (XRD) 进行了表征.
- 使用NaNbCl4O电解质和分层阴极的固态电池的制造和测试.
主要成果:
- 与化物对应物相比,氧化物NaNbCl4O的环境温度离子导电性 (1.03×10-4 S cm-1) 增加了约100倍.
- 确定了与氧气结合相关的独特结构特征.
- 固态电池实现了155mAh的g-1放电容量,具有良好的周期寿命.
结论:
- 开发的NaNbCl6-2xOx氧化物代表了对基电池的SSEs有前途的类别.
- NaNbCl4O的增强的离子导电性和稳定性为实用的固态电池应用铺平了道路.
- 与无和无阴极的成功集成突出了可持续能源储存的潜力.
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