一种基于Li0.95Na0.05FePO4的固态电解质,用于金属电池
Bohao Peng1, Zaichun Liu2, Qi Zhou1
1School of Energy Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu Province, 211816, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|September 24, 2023
概括
基于Li$_{0.95}$ Na$_{0.05}$ FePO$_{4}$ (LNFP) 的新固态电解质 (SSEs) 显示出更安全,更高能量的金属电池 (LMB) 的增强离子导电性和稳定性. 这些先进的电解质的性能优于传统的液体电解质.
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:
- 固态电解质 (SSEs) 对于开发安全和高能量密度的金属电池 (LMBs) 来说至关重要.
- 实现LMBs的实际应用取决于识别具有卓越综合性能的SSE.
- 目前SSE的局限性要求探索新材料,以提高安全性和能量密度.
研究的目的:
- 调查 Li$_{0.95}$ Na$_{0.05}$ FePO_{4}$ (LNFP) 作为 LMB 理想的 SSE 的潜力.
- 通过使用基于LNFP的复合固体电解质 (CSEs) 提高电子绝缘和接口稳定性.
- 通过使用开发的CSE来评估LMB的电化学性能.
主要方法:
- 作为固态电解质的Li$_{0.95}$ Na$_{0.05}$ FePO_{4}$ (LNFP) 的合成和表征.
- 制备基于LNFP的复合固体电解质 (CSEs),特别是LNFP50 (50%LNFP).
- 在LNFP50的电化学测试中,LNFP50用于LiFePO$_{4}$和LiLiNFP50用于Li[Ni$_{0.8}$ Co$_{0.1}$ Mn$_{0.1}$ ]O$_{2}$电池配置.
主要成果:
- LNFP 具有增强的离子导电性和与金属阳极的稳定接口.
- 该LNFP50 CSE显示高离子导电性 (3.58 × 10$^{-4}$ S cm$^{-1}$ 在25°C) 和良好的兼容性.
- 能LNFP50能LiFePO$_{4}$细胞在500个循环中实现了151.5 mAh g$^{-1}$,保留率为96.5%.
- 在170个循环后,LiLi[Ni$_{0.8}$ Co$_{0.1}$ Mn$_{0.1}$ ]O$_{2}$ 细胞保持了80%的容量,超过了液体电解质.
结论:
- Li$_{0.95}$ Na$_{0.05}$ FePO_{4}$ (LNFP) 是一个有前途的SSE材料,用于高性能LMB.
- 与液体电解质相比,基于LNFP的CSE提供了更好的安全性,稳定性和电化学性能.
- 这项工作提出了一个可行的战略,用于商业化下一代电池的先进SSEs.
关键词:
0.95Na0.05FePO4 0.95Na0.05FePO4 0.95Na0.05FePO4 0.95Na0.05FePO4 0.95Na0.05FePO4 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.95Na0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05这是一个PVDF.复合的固体电解质是复合的离子/电子导电层 离子/电子导电层固态金属电池 固态金属电池更多相关视频
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