Electrolyte containing solid particles and lithium ion secondary battery
Disclosed is an electrolyte containing solid particles and lithium ion secondary battery, comprising: an organic solvent, an electrolyte lithium salt, and glass particles dispersed in the liquid electrolyte, and the glass refers to composite oxide glass containing a lithium oxide and a phosphorus oxide. The above technical scheme may effectively improve the safety performance of a battery, and prolong the service life of the battery.
1 . An electrolyte containing solid particles, comprising: an organic solvent, an electrolyte lithium salt and glass particles dispersed in the liquid electrolyte, and the glass is composite oxide glass comprising a lithium oxide and a phosphorus oxide.
2 . The electrolyte containing the solid particles according to claim 1 , wherein the composite oxide glass comprising the lithium oxide and the phosphorus oxide is xLi 2 O-(1-x)P 2 O 5 glass, wherein 0.3≤x≤0.7.
3 . The electrolyte containing the solid particles according to claim 1 , wherein the composite oxide glass comprising the lithium oxide and the phosphorus oxide is M-doped xLi 2 O-(1-x)P 2 O 5 glass, wherein 0.3≤x≤0.7, M is selected from one or more of the group consisting of sulfur, boron, sodium, potassium, halogen, silicon, niobium and tantalum.
4 . The electrolyte containing the solid particles according to claim 3 , wherein the molar percentage content of M in the glass is less than or equal to 10%.
5 . The electrolyte containing the solid particles according to claim 1 , wherein further comprising a functional additive, the functional additive is selected from one or more of the group consisting of vinylene carbonate, fluoroethylene carbonate, ethylene sulfate, methylene methane disulfonate, 1,3-propane sultone, 1,4-butane sultone, 1,3-propene sultone, lithium difluorophosphate, lithium bis(oxalato)borate, lithium difluoro(oxalato)borate, lithium difluorobisoxalate phosphate, lithium tetrafluoromonooxalate phosphate, lithium bis(trifluoromethane sulfonimide) and lithium bis(fluorosulfonyl)imide.
6 . The electrolyte containing the solid particles according to claim 1 , wherein further comprising a suspension aid, the suspension aid is selected from one or more of the group consisting of a polymer dispersant, a surfactant and an anti-settling agent.
7 . The electrolyte containing the solid particles according to claim 1 , wherein the organic solvent is selected from one or more of the group consisting of ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate and ethyl methyl carbonate.
8 . The electrolyte containing the solid particles according to claim 1 , wherein the electrolyte lithium salt is selected from one or more of the group consisting of lithium hexafluorophosphate, lithium bis(trifluoromethane sulfonimide) and lithium bis(fluorosulfonyl)imide.
9 . The electrolyte containing the solid particles according to claim 1 , wherein the particle size of the glass particles dispersed in the liquid electrolyte is 0.01-2 microns.
10 . The electrolyte containing the solid particles according to claim 9 , wherein the particle size of the glass particles dispersed in the liquid electrolyte is 0.05-1 micron.
11 . The electrolyte containing the solid particles according to claim 1 , wherein the mass concentration of the glass particles in the electrolyte is 0.01%-30%.
12 . A lithium ion secondary battery, comprising the electrolyte containing the solid particles according to claim 1 .
13 . The electrolyte containing the solid particles according to claim 2 , wherein the organic solvent is selected from one or more of the group consisting of ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate and ethyl methyl carbonate.
14 . The electrolyte containing the solid particles according to claim 3 , wherein the organic solvent is selected from one or more of the group consisting of ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate and ethyl methyl carbonate.
15 . The electrolyte containing the solid particles according to claim 2 , wherein the electrolyte lithium salt is selected from one or more of the group consisting of lithium hexafluorophosphate, lithium bis(trifluoromethane sulfonimide) and lithium bis(fluorosulfonyl)imide.
16 . The electrolyte containing the solid particles according to claim 3 , wherein the electrolyte lithium salt is selected from one or more of the group consisting of lithium hexafluorophosphate, lithium bis(trifluoromethane sulfonimide) and lithium bis(fluorosulfonyl)imide.
17 . The electrolyte containing the solid particles according to claim 2 , wherein the particle size of the glass particles dispersed in the liquid electrolyte is 0.01-2 microns.
18 . The electrolyte containing the solid particles according to claim 3 , wherein the particle size of the glass particles dispersed in the liquid electrolyte is 0.01-2 microns.
19 . The electrolyte containing the solid particles according to claim 2 , wherein the mass concentration of the glass particles in the electrolyte is 0.01%-30%.
20 . The electrolyte containing the solid particles according to claim 3 , wherein the mass concentration of the glass particles in the electrolyte is 0.01%-30%.