Full
Outline
Organic liquid electrolytes commonly used in commercial lithium-ion batteries pose potential safety hazards， such as flammability and electrolyte leakage. In comparison， solid-state lithium-ion batteries based on solid polymer electrolytes have attracted extensive attention， due to their high safety and high energy density. In this article， we introduce the structure and ion conduction mechanism of solid polymer electrolytes， especially three modes of polymer segment migration， surface diffusion， and ion hopping. In terms of preparation methods， the principles， preparation processes， and advantages and disadvantages of ex-situ curing and in-situ polymerization curing are analyzed in detail. The ex-situ curing method has a mature process， but there are a few issues， such as poor interface contact and high thickness. The in-situ curing method can achieve excellent interface compatibility and is also compatible with current battery assembly technology. To overcome the problems of low room temperature ionic conductivity and insufficient electrochemical stability of solid polymer electrolytes， various modification strategies， such as polymer molecular structure design， plasticizer addition， polymer blending， nanoparticle filling， and multi-layer design are explored. These strategies aim to reduce polymer crystallinity， construct fast ion channels， anchor anions， and optimize the interface between electrolytes and electrodes. Finally， the review points out the development trend of solid polymer electrolytes in large-scale preparation and application in solid-state batteries， providing references for future research.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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