期刊
CURRENT OPINION IN ELECTROCHEMISTRY
卷 30, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.coelec.2021.100783
关键词
Nonflammable; Pseudoconcentrated electrolyte; Free solvent; Battery
资金
- Ministry of Science and Technology of China [2019YFE0100200]
- Tsinghua-Foshan Scientific Research Program [2019THFS0132]
- Clean Vehicles Consortium at U.S. [CERC-CVC2.0]
- China Clean Energy Research Center [CERC-CVC2.0]
Electrolyte plays a crucial role in the electrochemical performance and safety of batteries. Pseudoconcentrated electrolyte, with nonflammable solvents as diluent, shows great potential for high safety and high energy density secondary batteries.
Electrolyte is essentially important for electrochemical and safety performance of batteries. The pseudoconcentrated electrolyte, with lean solvent but anion-involved solvation sheath and heterogeneous long-range structure, endows the electrolyte with superior interfacial properties and the bulk properties, enabling the high-voltage lithium-ion battery, lithium-metal battery, and sodium battery with outstanding electrochemical performances. Nonflammable solvents as diluent in the pseudoconcentrated electrolyte can reach 30-60% by volume share, making the electrolyte nonflammable and then showing great possibility in mitigating the thermal runaway of the battery. As a new family of liquid electrolyte, nonflammable pseudoconcentrated electrolyte is promising for high safety and high energy density secondary batteries.
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