Abstract: An electrolyte includes a first composition and a second composition. The first composition includes at least one of a compound shown in formula I-A, a compound shown in formula I-B, or a compound shown in formula I-C, and the second composition includes a compound shown in formula II. A11 to A16, R11 to R17, R21 to R22, L, and n are separately defined in this specification. The electrolyte can make the electrochemical apparatus and the electronic apparatus have both significantly improved high-temperature resistance performance and safety performance.

Abstract: An electrolytic solution, including at least one of compounds represented by Formula (I-A). In Formula (I-A), n is an integer selected from 0 to 6; A1, A2, and A3 each are a structural formula represented by Formula (I-B) or Formula (I-C). In Formula (I-A), a number of —CN functional groups is 5 to 10, and a number of is greater than or equal to 1. The electrolytic solution is applicable to an electrochemical device, so that the electrochemical device can maintain good high-temperature storage performance, cycle performance, floating charge performance, and overcharge performance while achieving a relatively high energy density.

Abstract: An electrolyte including an additive of compound of formula I, wherein n is an integer ranging from 0 to 10; R1 and R2 are each independently selected from a substituted or unsubstituted C1-C10 alkylidene group, a substituted or unsubstituted C2-C10 alkenylene group, or a substituted or unsubstituted C1-C10 alkyleneoxy group; A1 selected from CH, C, N, S, O, B or Si; A2 is selected from CH—R3, N—R3, S, O, B—R3 or SiH—R3; A3 selected from CH2, CH, C, N, S, O, B or Si; R3 is selected from hydrogen, halogen, a substituted or unsubstituted C1-C10 alkyl group, or a substituted or unsubstituted C3-C10 cycloalkyl group; X1 is selected from a substituted or unsubstituted C1-C10 alkylidene group, a substituted or unsubstituted C2-C10 alkenylene group, ?Rc?, or ?Rc—, wherein Rc is selected from a substituted or unsubstituted C2-C6 alkylidene group.

Abstract: An electrolytic solution includes a compound represented by Formula I-A and a compound represented by Formula II-A. In Formula I-A, A11, A12, and A13 are each independently selected from Formula (I-A1) and Formula (I-A2). In Formula I-A, n is a positive integer from 1 to 8. When n>1, the plurality of A11 structures are identical or different. At least two of the A11, A12, or A13 are selected from I-A2. In Formula II-A, Q is independently selected from Formula (II-A1) and Formula (II-A2). In Formula II-A, m is 1 or 2. R11, R12, R13, R21, R22, and R23 are each independently selected from a covalent single bond, a substituted or unsubstituted C1 to C10 alkylidene and heterocyclyl, a substituted or unsubstituted C2 to C10 alkenyl and alkynyl, a substituted or unsubstituted C6 to C10 aryl, a substituted or unsubstituted C3 to C10 alicyclic hydrocarbyl, and a substituted or unsubstituted heteroatom-containing functional group, in which a substituent for substitution is halogen.

Abstract: The present application relates to an electrochemical device comprising a separator and an electrolyte, wherein the separator comprises a first porous layer and a second porous layer; and the electrolyte comprises at least one compound containing 2 to 3 cyano groups.

Abstract: An electrolyte including a compound R11 is a covalent bond, a substituted or unsubstituted C1-C20 alkylidene group, a substituted or unsubstituted C2-C20 alkenylene group, a substituted or unsubstituted C2-C20 alkynylene group, a substituted or unsubstituted C6-C20 arylene group, a substituted or unsubstituted C3-C20 heteroarylene group, a substituted or unsubstituted C3-C20 cycloalkylene group, or a combination thereof. R12, R13, and R14 are a substituted or unsubstituted C1-C20 alkylidene group, C2-C20 alkenylene group, C2-C20 alkynylene group, C6-C20 arylene group, C3-C20 heteroarylene group, or C3-C20 cycloalkylene group; or a combination thereof. R15 and R16 are a C1-C20 alkylidene group, a substituted or unsubstituted C2-C20 alkenylene group, a substituted or unsubstituted C2-C20 alkynylene group, a substituted or unsubstituted C6-C20 arylene group, a substituted or unsubstituted C3-C20 heteroarylene group, or a substituted or unsubstituted C3-C20 cycloalkylene group.

Abstract: The present application relates to an electrolytic solution and an electrochemical device comprising the electrolytic solution. The electrolytic solution comprises a carbonate compound having a silicon-containing functional group, so as to significantly improve the overcharge performance and high-temperature storage performance of an electrochemical device using the electrolytic solution.

Abstract: The present application relates to an electrolytic solution and an electrochemical device using the same. The electrolytic solution comprises a cyclic fluorocarbonate, a chain fluorocarbonate and a fluoroether compound, wherein based on the weight of the electrolytic solution, the weight percentage of the cyclic fluorocarbonate is 15 wt % to 80 wt %. The electrolytic solution provided by the present application has high electric conductivity and good electrochemical stability and safety performance, can significantly improve the cycle performance of the battery, and especially meet the demand for long cycle life of a lithium metal battery, and has a very large application value in the lithium metal battery.

Abstract: An electrolyte includes a compound represented by formula I-A, where A1, A2, and A3 are each independently selected from formula I-B or formula I-C, and at least two of A1, A2, and A3 are formula I-C. In formula I-A, n is selected from integers 1 to 10, and m is selected from 0 or 1. In formula I-B and formula I-C, represents a site at which two adjacent atoms are joined. The electrolyte can significantly improve high-temperature storage performance, cycle performance, and floating charge performance of the electrochemical device.

Abstract: An electrolyte including at least a compound of formula I: A1, A2, and A3 are each independently selected from the following formulas I-A, I-B, I-C, or I-D, and the A1, A2, and A3 are not all I-A: m and k are 0 or 1, and n is integer from 1 to 6. R11, R13, R14, R15, R16, R17, R18, R19, R1a, R1b, R1c, and R1d are selected from hydrogen; substituted or unsubstituted C1-C10 alkylidene groups, C2-C10 alkenylene groups, C2-C10 alkynylidene groups, C3-C10 cumulative dienyl groups, C6-C10 aryl groups, or C3-C10 alicyclic hydrocarbon groups. R12 is selected from substituted or unsubstituted C1-C10 alkyl groups, C2-C10 alkenyl groups, C2-C10 alkynyl groups, C3-C10 cumulative dienyl groups, C6-C10 aryl groups, C3-C10 alicyclic hydrocarbon groups, or heteroatom-containing functional groups.

Abstract: The present application relates to an electrolytic solution and an electrochemical device using the same. The electrolytic solution comprises a cyclic fluorocarbonate, a chain fluorocarbonate and a fluoroether compound, wherein based on the weight of the electrolytic solution, the weight percentage of the cyclic fluorocarbonate is 15 wt % to 80 wt %. The electrolytic solution provided by the present application has high electric conductivity and good electrochemical stability and safety performance, can significantly improve the cycle performance of the battery, and especially meet the demand for long cycle life of a lithium metal battery, and has a very large application value in the lithium metal battery.

Abstract: An electrolyte including an additive of compound of formula I, wherein n is an integer ranging from 0 to 10; R1 and R2 are each independently selected from a substituted or unsubstituted C1-C10 alkylidene group, a substituted or unsubstituted C2-C10 alkenylene group, or a substituted or unsubstituted C1-C10 alkyleneoxy group; Ai selected from CH, C, N, S, O, B or Si; A2 is selected from CH—R3, N—R3, S, O, B—R3 or SiH—R3; A3 selected from CH2, CH, C, N, S, O, B or Si; R3 is selected from hydrogen, halogen, a substituted or unsubstituted C1-C10 alkyl group, or a substituted or unsubstituted C3-C10 cycloalkyl group; Xi is selected from a substituted or unsubstituted C1-C10 alkylidene group, a substituted or unsubstituted C2-C10 alkenylene group, ?Rc?, or ?Rc—, wherein Rc is selected from a substituted or unsubstituted C2-C6 alkylidene group.

Abstract: The present application relates to an electrolytic solution and an electrochemical device comprising the electrolytic solution. The electrolytic solution comprises a carbonate compound having a silicon-containing functional group, so as to significantly improve the overcharge performance and high-temperature storage performance of an electrochemical device using the electrolytic solution.