Non-water electrolyte composition for raising overcharge safety and lithium cell using said composition
A non-aqueous electrolyte, lithium battery technology, applied in non-aqueous electrolyte batteries, non-aqueous electrolyte batteries, batteries with organic electrolytes, etc., can solve problems such as battery expansion, formation, standard capacity or cycle characteristics deterioration.
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Embodiment 1
[0063] LiPF as lithium salt 6 Dissolved in a mixed solvent of ethylene carbonate (EC) / ethylmethyl carbonate (EMC) / propylene carbonate (PC) / fluorobenzene (FB) (volume ratio 30 / 55 / 5 / 10) to get mixed solution, where LiPF 6 The final concentration was 1.15M. 3 wt % (based on the total amount of the mixed solution) of o-benzylbiphenyl represented by structural formula 3 was added to the mixed solution to obtain the desired electrolyte. Structural formula 3 is:
[0064] Formula 3
Embodiment 2
[0066] LiPF as lithium salt 6 Dissolve in the mixed solvent of EC / EMC / PC / FB (volume ratio is 30 / 55 / 5 / 10) to obtain mixed solution, wherein LiPF 6 The final concentration was 1.15M. 5 wt% (based on the total amount of the mixed solution) of o-benzylbiphenyl represented by structural formula 3 was added to the mixed solution to obtain the desired electrolyte.
Embodiment 3
[0068] LiPF as lithium salt 6 Dissolve in the mixed solvent of EC / EMC / PC / FB (volume ratio is 30 / 55 / 5 / 10) to obtain mixed solution, wherein LiPF 6 The final concentration was 1.15M. 10 wt% (based on the total amount of the mixed solution) of o-benzylbiphenyl represented by structural formula 3 was added to the mixed solution to obtain the desired electrolyte.
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