NaCl 介相使稳定的 Na2.85Sb0.95W0.05S3.9Cl0.1 基全固态电池成为可能
Zhanyou Feng1,2, Liang Zhu1, Enbo Qin1
1Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201 P. R. China liyong@nimte.ac.cn yaoxy@nimte.ac.cn.
Chemical science
|February 16, 2026
概括
研究人员开发了一种新的硫化固体电解质,通过与和联合剂. 这提高了离子导电性和稳定性,使得更安全,高性能的全固态电池.
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:
- 全固态 (Na) 电池 (ASSSB) 提供了更高的安全性和成本效益.
- 开发具有高Na+离子导电性的稳定硫化电解质对于高性能ASSSB至关重要.
研究的目的:
- 设计和合成一种新的 (W) 和 (Cl) 联合合的硫化固体电解质.
- 为了提高硫化物电解质的离子导电性和界面稳定性,用于金属阳极.
主要方法:
- 融灭与电解质合成的回火工艺相结合.
- 离子导电性和电化学稳定性的表征.
- 制造和测试Na/电解质/Na对称细胞和TiS2/电解质/NaASSSB.
主要成果:
- 在W-Cl联合剂的Na2.85Sb0.95W0.05S3.9Cl0.1电解质中达到12.66mS cm-1的Na+离子导电率,比未剂材料显著增加.
- 在现场形成的基于NaCl的介相层有效地抑制了与金属阳极的介面副作用反应.
- 在对称单元中经过800小时的稳定循环,在基于TiS2的ASSSB中在100个循环后实现了81.6%的容量保留.
结论:
- 和联合剂是一种可行的策略,可以提高硫化固体电解质的性能.
- 开发的电解质具有高离子导电性和优异的界面稳定性,为实际的ASSSB铺平了道路.
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