PEO基有机/无机复合固态电解质的研究进展

doi:10.19964/j.issn.1006-4990.2024-0249

Abstract

Abstract:

Lithium-ion battery is considered as the most convenient and effective energy storage equipment due to its high energy density and long cycle life.In order to improve the stability and safety of lithium-ion batteries，solid-state electrolytes have been widely studied.However，pure polymer electrolytes have the drawbacks of lower ionic conductivity，narrow operating voltage window，which hindered their applications in all-solid-state lithium-ion batteries.PEO-based composite electrolytes are the most promising class of electrolyte systems due to their advantages of easy processing，low cost，and good interfacial contact.Based on this，composite solid electrolytes were introduced basicly and the ionic conduction mechanism of PEO-based electrolytes was discussed，and then the relevant research results in recent years according to the different geometries of inorganic fillers，such as nanoparticles，nanowires/nanotubes，two-dimensional lamellar materials，and 3D skeleton structures were reviewed.The effects of inorganic fillers with different geometries on the performance of electrolytes，especially ionic conductivity，and the cycling performance of the full battery were elaborated.Finally，the key issues and development of composite solid-state electrolytes were summarized.

Key words: all solid-state lithium battery, composite solid electrolyte, inorganic filler, geometry

CLC Number:

TQ131.11

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.

Figures/Tables 5

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固态电解质		离子电导率/ （S·cm^-1）	电化学性能
0D	PEO/LiTFSI/8% 5 nmBaTiO₃^［12］	2.2×10^-5（25 ℃）	141 mA·h/g（LFP/Li， 0.1C，80 °C）
	PEO/LiTFSI/10% LLZTO^［13］	3.0×10^-4（55 ℃）	156 mA·h/g（LFP/Li， 0.1C，55 °C）
	PEO/LiClO₄/52.5% LLZO^［14］	4.4×10^-4（55 ℃）	166 mA·h/g（NCM622/Li，0.02C，55 °C）
	PEO/LiTFSI/1 μm LLZO^［15］	4.0×10^-3（70 ℃）	168 mA·h/g（LFP/Li， 0.1C）
	PEO/LiTFSI/LAGP^［16］	1.1×10^-3（60 ℃）	149 mA·h/g（LFP/Li， 0.3C，60 °C）
1D	PEO/LiTFSI/BaTiO₃^［17］	5.8×10^-5（30 ℃）	电化学窗口提升至5.8 V
	PEO/LiTFSI/10% Mg₂B₂O₅^［18］	3.7×10^-4（50 ℃）	150 mA·h/g（LFP/Li， 0.2C，50 °C）
	PEO/LiTFSI/15% LLTO^［19］	2.6×10^-4（室温）	电化学窗口提升至5 V
	PEO/LiTFSI/10% LLZTO^［20］	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^［21］	1.5×10^-5（24 ℃）	142 mA·h/g（LFP/Li， 0.5C，60 °C）
2D	PEO/LiTFSI/1.5% Ti₃C₂T _x^［22］	1.3×10^-5（室温）	140 mA·h/g（LFP/Li， 0.3C，60 °C）
3D	PEO/LiTFSI/LLZAO^［23］	2.5×10^-4（室温）	0.2 mA/cm²循环500 h
	PEO/LiTFSI/LATP^［24］	6.5×10^-4（60 ℃）	144 mA·h/g（LFP/Li， 0.2C，60 °C）
	PEO/LiTFSI/8% AF^［25］	6.6×10^-4（80 ℃）	137 mA·h/g（LFP/Li， 0.2C，70 °C）

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Research progress of PEO based organic/inorganic composite solid electrolyte

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