无机盐工业 ›› 2025, Vol. 57 ›› Issue (3): 1-8.doi: 10.19964/j.issn.1006-4990.2024-0249
• 综述与专论 • 下一篇
收稿日期:
2024-05-07
出版日期:
2025-03-10
发布日期:
2024-06-13
通讯作者:
李妍(1978— ),女,博士,副教授,主要从事新能源材料的研究及器件开发;E-mail:yanli@bipt.edu.cn。作者简介:
马静媛(1997— ),女,硕士,主要从事固态电解质方向的研究;E-mail:maaajy@foxmail.com。
MA Jingyuan(), LI Yan(
), ZHOU Hanjie(
), LI Jiangang
Received:
2024-05-07
Published:
2025-03-10
Online:
2024-06-13
摘要:
锂离子电池由于其高能量密度、长循环寿命等优点被认为是方便、有效的储能设备。为了提高锂离子电池的高稳定性和高安全性,固态电解质已经被广泛研究;但单一聚合物固态电解质存在如离子电导率低、工作电压窗口窄等问题,无法满足全固态锂离子电池的性能标准。PEO基复合电解质因其易加工、成本低,界面接触良好的优势,是目前最有前景的一类电解质体系。基于此,首先对复合固态电解质进行了基本介绍,并探讨PEO基的离子传导机理,然后根据无机填料的不同几何结构,如纳米粒子、纳米线/纳米管、二维片状材料、三维骨架结构,综述了近几年来的相关研究成果,详细阐述了不同几何结构的无机填料对电解质性能尤其是离子电导率、全电池的循环性能等影响,最后对复合固态电解质面临的关键问题和发展进行了展望。
中图分类号:
马静媛, 李妍, 周晗洁, 李建刚. PEO基有机/无机复合固态电解质的研究进展[J]. 无机盐工业, 2025, 57(3): 1-8.
MA Jingyuan, LI Yan, ZHOU Hanjie, LI Jiangang. Research progress of PEO based organic/inorganic composite solid electrolyte[J]. Inorganic Chemicals Industry, 2025, 57(3): 1-8.
表1
添加不同几何结构的无机填料CSE的性能
固态电解质 | 离子电导率/ (S·cm-1) | 电化学性能 | |
---|---|---|---|
0D | PEO/LiTFSI/8% 5 nmBaTiO3[ | 2.2×10-5(25 ℃) | 141 mA·h/g(LFP/Li, 0.1C,80 °C) |
PEO/LiTFSI/10% LLZTO[ | 3.0×10-4(55 ℃) | 156 mA·h/g(LFP/Li, 0.1C,55 °C) | |
PEO/LiClO4/52.5% LLZO[ | 4.4×10-4(55 ℃) | 166 mA·h/g(NCM622/Li,0.02C,55 °C) | |
PEO/LiTFSI/1 μm LLZO[ | 4.0×10-3(70 ℃) | 168 mA·h/g(LFP/Li, 0.1C) | |
PEO/LiTFSI/LAGP[ | 1.1×10-3(60 ℃) | 149 mA·h/g(LFP/Li, 0.3C,60 °C) | |
1D | PEO/LiTFSI/BaTiO3[ | 5.8×10-5(30 ℃) | 电化学窗口提升至5.8 V |
PEO/LiTFSI/10% Mg2B2O5[ | 3.7×10-4(50 ℃) | 150 mA·h/g(LFP/Li, 0.2C,50 °C) | |
PEO/LiTFSI/15% LLTO[ | 2.6×10-4(室温) | 电化学窗口提升至5 V | |
PEO/LiTFSI/10% LLZTO[ | 2.1×10-4(25 ℃) | 电化学窗口提升至5 V,锂离子迁移数为0.57 | |
2D | PEO/LiTFSI/1% GO[ | 1.5×10-5(24 ℃) | 142 mA·h/g(LFP/Li, 0.5C,60 °C) |
PEO/LiTFSI/1.5% Ti3C2T x[ | 1.3×10-5(室温) | 140 mA·h/g(LFP/Li, 0.3C,60 °C) | |
3D | PEO/LiTFSI/LLZAO[ | 2.5×10-4(室温) | 0.2 mA/cm2循环500 h |
PEO/LiTFSI/LATP[ | 6.5×10-4(60 ℃) | 144 mA·h/g(LFP/Li, 0.2C,60 °C) | |
PEO/LiTFSI/8% AF[ | 6.6×10-4(80 ℃) | 137 mA·h/g(LFP/Li, 0.2C,70 °C) |
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