Electrochemical device and electronic device containing same

An electronic device, comprising an electrochemical device, wherein the electrochemical device comprises:

• 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;
• 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%.