US 12,412,930 B2
Electrolyte and electrochemical device
Chao Tang, Ningde (CN); Lilan Zhang, Ningde (CN); Junfei Liu, Ningde (CN); and Jianming Zheng, Ningde (CN)
Assigned to NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde (CN)
Appl. No. 16/961,495
Filed by NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde (CN)
PCT Filed Dec. 26, 2019, PCT No. PCT/CN2019/128851
§ 371(c)(1), (2) Date Jul. 10, 2020,
PCT Pub. No. WO2021/128205, PCT Pub. Date Jul. 1, 2021.
Prior Publication US 2021/0408601 A1, Dec. 30, 2021
Int. Cl. H01M 10/0568 (2010.01); C07C 255/05 (2006.01); C07D 319/12 (2006.01); H01M 10/0525 (2010.01); H01M 10/0567 (2010.01); H01M 10/0569 (2010.01)
CPC H01M 10/0568 (2013.01) [C07C 255/05 (2013.01); C07D 319/12 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 10/0569 (2013.01); H01M 2300/0028 (2013.01)] 15 Claims
 
1. An electrolyte, consisting of:
an organic solvent;
a fluorinated additive;
a compound of Formula I;
at least one of a compound of Formula II or a compound of Formula III;

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wherein R1, R2, R3 and R4 are each independently selected from hydrogen, halo, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C2-C10 alkynyl, substituted or unsubstituted C6-C12 aryl, substituted or unsubstituted C1-C10 alkoxy, or substituted or unsubstituted C6-C12 aryloxy, wherein when substituted, the substituent is halo, cyano, or C1-C10 alkyl; and a, d and f are each independently selected from an integer from 1 to 5, and b, c, e, g, h and i are each independently selected from an integer from 0 to 5;
a lithium salt; and
at least one additive selected from vinylene carbonate, 1,3-propane sultone, ethylene sulfate, succinonitrile or adiponitrile,
wherein the compound of Formula I is from greater than 0.01 wt % to less than or equal to 3 wt % of the weight of the electrolyte, and the compound of Formula II, the compound of Formula III, or a combination thereof is from 0.1 wt % to 5 wt % of the weight of the electrolyte; and
wherein the compound of Formula I comprises at least one of:

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the compound of Formula II comprises at least one of

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the compound of Formula III comprises at least one of

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and
wherein the fluorinated additive includes fluoroethylene carbonate and at least one of the following: fluorinated ethyl methyl carbonate, fluorinated dimethyl carbonate, fluorinated diethyl carbonate, fluorinated ethyl propionate, fluorinated propyl propionate, fluorinated methyl propionate, fluorinated ethyl acetate, fluorinated methyl acetate, fluorinated propyl acetate,

OG Complex Work Unit Chemistry