ELECTROLYTIC SOLUTION, SECONDARY BATTERY AND POWER CONSUMPTION APPARATUS
An electrolytic solution includes a lithium salt, an organic solvent, and an additive. The additive is a salt with a formula of M1M2 x O y . The M1 is selected from one or more of alkali metal element and NH4 + . The M2 is selected from one or more of VB-VIII group elements in a fourth cycle of a periodic table of elements. x is in a range of 0.01-4, and y is in a range of 0.1-9.
1 . An electrolytic solution, comprising:
a lithium salt;
an organic solvent; and
an additive, wherein the additive is a salt with a formula of M1M2 x O y , the M1 is selected from one or more of alkali metal element and NH4 + , the M2 is selected from one or more of VB-VIII group elements in a fourth cycle of a periodic table of elements, x is in a range of 0.01-4, and y is in a range of 0.1-9.
2 . The electrolytic solution according to claim 1 , wherein the alkali metal element is one or more of Li, Na, K, and Rb.
3 . The electrolytic solution according to claim 1 , wherein the VB-VIII group elements in the fourth cycle of the periodic table of elements are one or more of V, Cr, Mn, Fe, Co, and Ni.
4 . The electrolytic solution according to claim 1 , wherein the additive is one or more of NH 4 VO 3 , KMnO 4 , Na 2 FeO 4 , LiCoO 2 , NaVO 4 , NaVO 3 , K 2 Cr 2 O 7 , and NaCoO 2 .
5 . The electrolytic solution according to claim 4 , wherein the additive is NH 4 VO 3 or KMnO 4 .
6 . The electrolytic solution according to claim 1 , wherein a content of the additive is in a range of 0.01-1 weight % based on a total weight of the electrolytic solution.
7 . The electrolytic solution according to claim 6 , wherein the content of the additive is in a range of 0.1-0.5 weight % based on the total weight of the electrolytic solution.
8 . The electrolytic solution according to claim 1 , wherein the additive is added to the electrolytic solution in a form of a nanoparticle, and a particle size of the nanoparticle is in a range of 300-800 nm.
9 . The electrolytic solution according to claim 1 , wherein a content of the lithium salt is in a range of 0.5-2 mol/L, based on a total volume of electrolytic solution.
10 . The electrolytic solution according to claim 9 , wherein the content of the lithium salt is in a range of 1-2 mol/L, based on the total volume of electrolytic solution.
11 . The electrolytic solution according to claim 1 , wherein a content of the organic solvent is in a range of 80-85 weight %, based on a total weight of the electrolytic solution.
12 . The electrolytic solution according to claim 1 , wherein the electrolytic solution further comprises a cosolvent.
13 . The electrolytic solution according to claim 12 , wherein the cosolvent is one or more of propylene carbonate, difluoro vinyl carbonate, dimethyl carbonate, diethyl carbonate, monofluorobenzene, difluorobenzene, trifluorobenzene, succinonitrile, and 1,3-dioxolane.
14 . The electrolytic solution according to claim 12 , wherein a content of the cosolvent is greater than 0 and less than or equal to 6 weight %, based on a total weight of the electrolytic solution.
15 . The electrolytic solution according to claim 14 , wherein the content of the cosolvent is in a range of 1-3 weight %, based on the total weight of the electrolytic solution.
16 . A secondary battery, comprising:
an electrolytic solution comprising:
a lithium salt;
an organic solvent; and
an additive, wherein the additive is a salt with a formula of M1M2 x O y , the M1 is selected from one or more of alkali metal element and NH4 + , the M2 is selected from one or more of VB-VIII group elements in a fourth cycle of a periodic table of elements, x is in a range of 0.01-4, and y is in a range of 0.1-9.
17 . A power consumption apparatus, comprising the secondary battery according to claim 16 .
18 . A battery module, comprising:
a secondary battery comprising an electrolytic solution, the electrolytic solution comprising:
a lithium salt;
an organic solvent; and
an additive, wherein the additive is a salt with a formula of M1M2 x O y , the M1 is selected from one or more of alkali metal element and NH4 + , the M2 is selected from one or more of VB-VIII group elements in a fourth cycle of a periodic table of elements, x is in a range of 0.01-4, and y is in a range of 0.1-9.
19 . A battery pack, comprising the battery module according to claim 18 .