Research progress of high safety flame retardant electrolytes for lithium-ion batteries

doi:10.12028/j.issn.2095-4239.2018.0153

Abstract

Abstract: Commercial lithium-ion batteries (LIBs) are easy to catch fire and even explode under abuse conditions such as mechanical shock, thermal shock, overcharge, and short circuit, et al. To resolve this safety concern, it is necessary to develop high safety flame retardant electrolytes replacing the highly flammable conventional carbonate-based electrolytes. This review presents the research progress of high safety flame retardant electrolytes for LIBs. Firstly, the mechanisms of combustion and flame retardant, together with the methods of flame retardant evaluation are introduced. Then, the LIBs demands on properties of flame retardant electrolytes are described, and flame retardant electrolytes are discussed by classifications:flame retardant additives; flame retardant solvents/cosolvents; highly concentrated electrolytes; ionic liquids; and flame retardant gel polymer electrolyte. The formulations, flame retardant effects, and applicable battery systems of these high safety flame retardant electrolytes are mainly focused. Finally, future research directions of high safety flame retardant electrolytes are prospected.

Key words: lithium-ion batteries, safety, flame retardant electrolytes

CLC Number:

TQ028.8

XU Gaojie, WANG Xiao, LU Di, JANG Miaomiao, HUANG Suqi, SHANGGUAN Xuehui, CUI Guanglei. Research progress of high safety flame retardant electrolytes for lithium-ion batteries[J]. Energy Storage Science and Technology, 2018, 7(6): 1040-1059.

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