US 12,113,169 B2
Electrochemical device and electronic device containing same
Li Wenqiang, Fujian (CN); Mingming Guan, Fujian (CN); Jianming Zheng, Fujian (CN); and Xiangling Zheng, Fujian (CN)
Assigned to NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde (CN)
Appl. No. 17/281,881
Filed by NINGDE AMEPEREX TECHNOLOGY LIMITED, Fujian (CN)
PCT Filed Mar. 13, 2020, PCT No. PCT/CN2020/079264
§ 371(c)(1), (2) Date Mar. 31, 2021,
PCT Pub. No. WO2021/179300, PCT Pub. Date Sep. 16, 2021.
Prior Publication US 2022/0149431 A1, May 12, 2022
Int. Cl. H01M 10/0567 (2010.01); H01M 10/0568 (2010.01)
CPC H01M 10/0567 (2013.01) [H01M 10/0568 (2013.01); H01M 2300/0025 (2013.01)] 19 Claims
 
1. An electrochemical device, comprising:
a positive electrode, wherein the positive electrode comprises a positive electrode current collector and a positive active material layer, and the positive active material layer comprises a positive active material;
a negative electrode, wherein the negative electrode comprises a negative electrode current collector and a negative active material layer, and the negative active material layer comprises a negative active material; and
an electrolytic solution, wherein the electrolytic solution comprises a lithium ion and an anion represented by Formula I:

OG Complex Work Unit Chemistry
wherein
n is an integer in a range of 0 to 5; and
R1 is selected from substituted or unsubstituted C1-C12 alkyls, substituted or unsubstituted C2-C12 alkenyls, substituted or unsubstituted C6-C20 aryls, and substituted or unsubstituted C1-C12 hydrocarbyloxys, wherein a substituent in the substitution is independently selected from a silyl, a siloxy, an amino group, an ether group, ester group, a carboxyl, a sulfonic acid group, a mercapto group, a cyano group, a halogen, or any combination thereof;
wherein, based on a total mass of the electrolytic solution, a content of the anion represented by Formula I is 2%-7%.