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US 12,763,365 B2Granted
Electrolytic solution, electrochemical device, and electronic device
AssigneeDongguan Amperex Technology Limited
InventorsXiexue Peng, Jianming Zheng, Chao Tang
Life of this patent
Estimating the term…
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.
Claims17
An electrolytic solution, comprising 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):
- R1, R2, R3, R4, R5, R6, R7, and R8 each are independently selected from hydrogen, halogen, a cyano group,
- a substituted or unsubstituted C1 to C10 alkyl, a substituted or unsubstituted C2 to C10 alkenyl, a substituted or unsubstituted C2 to C10 alkynyl, or a substituted or unsubstituted C6 to C10 aryl, in which a substituent for substitution comprises at least one of the halogen, the cyano group, or
- 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;
- and
- Rb1, Rb2, Rb3, Rb4, Rb5, and R1e each are independently selected from a covalent single bond, a substituted or unsubstituted C1 to C10 alkylidene, a substituted or unsubstituted C2 to C10 alkenylene, a substituted or unsubstituted C2 to C10 alkynylene, or a substituted or unsubstituted C6 to C10 arylene, in which a substituent for substitution is halogen,
- wherein
- represents a site of bonding with an adjacent atom;
- wherein the electrolytic solution further comprises at least one of compounds represented by Formula (II-A):
- in Formula (II-A),
- m is selected from 0 or 1;
- R21, R22, and R23 each are independently selected from
- a substituted or unsubstituted C1 to C10 alkylidene or a substituted or unsubstituted C2 to C10 alkenylene, in which a substituent for substitution is halogen;
- and
- R24 and R25 each are independently selected from a covalent bond, a substituted or unsubstituted C1 to C10 alkylidene, or a substituted or unsubstituted C2 to C10 alkenylene, in which a substituent for substitution is halogen,
- wherein,
- represents a site of bonding with an adjacent atom;
- and
- wherein the electrolytic solution further comprises at least one of compounds represented by Formula (III-A):
- in Formula (III-A),
- A21, A22, A23, and A24 each are independently selected from halogen or a structural formula represented by Formula (III-B), Formula (III-C), or Formula (III-D):
- x is selected from 0 or 1;
- R21 and R23 each are independently selected from a substituted or unsubstituted C1 to C6 alkyl or a substituted or unsubstituted C2 to C6 alkenyl, in which a substituent for substitution is halogen;
- R22 is selected from a substituted or unsubstituted C1 to C6 alkylidene or a substituted or unsubstituted C2 to C6 alkenylene, in which a substituent for substitution is halogen;
- and
- when A21, A22, A23, and A24 are selected from the structural formulas represented by Formula (III-C), 2 or 4 of A21, A22, A23, or A24 are independently selected from the structural formulas represented by Formula (III-C) concurrently, every two structural formulas represented by Formula (III-C) can bond with each other to form a cyclic structure, and an O atom adjacent to
- in Formula (III-C) is connected to a B atom at a center of Formula (III-A),
- wherein
- represents a site of bonding with an adjacent atom.
29 more elements
An electrochemical device, comprising a positive electrode plate, a negative electrode plate, a separator, and an electrolytic solution, wherein the electrolytic solution comprises 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):
- R1, R2, R3, R4, R5, R6, R7, and R8 each are independently selected from hydrogen, halogen, a cyano group,
- a substituted or unsubstituted C1 to C10 alkyl, a substituted or unsubstituted C2 to C10 alkenyl, a substituted or unsubstituted C2 to C10 alkynyl, or a substituted or unsubstituted C6 to C10 aryl, in which a substituent for substitution comprises at least one of the halogen, the cyano group, or
- 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;
- and
- Rb1, Rb2, Rb3, Rb4, Rb5, and R1e each are independently selected from a covalent single bond, a substituted or unsubstituted C1 to C10 alkylidene, a substituted or unsubstituted C2 to C10 alkenylene, a substituted or unsubstituted C2 to C10 alkynylene, or a substituted or unsubstituted C6 to C10 arylene, in which a substituent for substitution is halogen,
- wherein
- represents a site of bonding with an adjacent atom,
- wherein the electrolytic solution further comprises at least one of compounds represented by Formula (II-A):
- in Formula (II-A),
- m is selected from 0 or 1;
- R21, R22, and R23 each are independently selected from
- a substituted or unsubstituted C1 to C10 alkylidene or a substituted or unsubstituted C2 to C10 alkenylene, in which a substituent for substitution is halogen;
- and
- R24 and R25 each are independently selected from a covalent bond, a substituted or unsubstituted C1 to C10 alkylidene, or a substituted or unsubstituted C2 to C10 alkenylene, in which a substituent for substitution is halogen,
- wherein,
- represents a site of bonding with an adjacent atom;
- and
- wherein the electrolytic solution further comprises at least one of compounds represented by Formula (III-A):
- in Formula (III-A),
- A21, A22, A23, and A24 each are independently selected from halogen or a structural formula represented by Formula (III-B), Formula (III-C), or Formula (III-D):
- x is selected from 0 or 1;
- R21 and R23 each are independently selected from a substituted or unsubstituted C1 to C6 alkyl or a substituted or unsubstituted C2 to C6 alkenyl, in which a substituent for substitution is halogen;
- R22 is selected from a substituted or unsubstituted C1 to C6 alkylidene or a substituted or unsubstituted C2 to C6 alkenylene, in which a substituent for substitution is halogen;
- and
- when A21, A22, A23, and A24 are selected from the structural formulas represented by Formula (III-C), 2 or 4 of A21, A22, A23, or A24 are independently selected from the structural formulas represented by Formula (III-C) concurrently, every two structural formulas represented by Formula (III-C) can bond with each other to form a cyclic structure, and an O atom adjacent to
- in Formula (III-C) is connected to a B atom at a center of Formula (III-A),
- wherein
- represents a site of bonding with an adjacent atom.
29 more elements
An electronic device, comprising an electrochemical device, wherein the electrochemical device comprises a positive electrode plate, a negative electrode plate, a separator, and an electrolytic solution, wherein the electrolytic solution comprises 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):
- R1, R2, R3, R4, R5, R6, R7, and R8 each are independently selected from hydrogen, halogen, a cyano group,
- a substituted or unsubstituted C1 to C10 alkyl, a substituted or unsubstituted C2 to C10 alkenyl, a substituted or unsubstituted C2 to C10 alkynyl, or a substituted or unsubstituted C6 to C10 aryl, in which a substituent for substitution comprises at least one of the halogen, the cyano group, or
- 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;
- and
- Rb1, Rb2, Rb3, Rb4, Rb5, and R1e each are independently selected from a covalent single bond, a substituted or unsubstituted C1 to C10 alkylidene, a substituted or unsubstituted C2 to C10 alkenylene, a substituted or unsubstituted C2 to C10 alkynylene, or a substituted or unsubstituted C6 to C10 arylene, in which a substituent for substitution is halogen,
- wherein
- represents a site of bonding with an adjacent atom,
- wherein the electrolytic solution further comprises at least one of compounds represented by Formula (II-A):
- in Formula (II-A),
- m is selected from 0 or 1;
- R21, R22, and R23 each are independently selected from
- a substituted or unsubstituted C1 to C10 alkylidene or a substituted or unsubstituted C2 to C10 alkenylene, in which a substituent for substitution is halogen;
- and
- R24 and R25 each are independently selected from a covalent bond, a substituted or unsubstituted C1 to C10 alkylidene, or a substituted or unsubstituted C2 to C10 alkenylene, in which a substituent for substitution is halogen,
- wherein,
- represents a site of bonding with an adjacent atom;
- and
- wherein the electrolytic solution further comprises at least one of compounds represented by Formula (III-A):
- in Formula (III-A),
- A21, A22, A23, and A24 each are independently selected from halogen or a structural formula represented by Formula (III-B), Formula (III-C), or Formula (III-D):
- x is selected from 0 or 1;
- R21 and R23 each are independently selected from a substituted or unsubstituted C1 to C6 alkyl or a substituted or unsubstituted C2 to C6 alkenyl, in which a substituent for substitution is halogen;
- R22 is selected from a substituted or unsubstituted C1 to C6 alkylidene or a substituted or unsubstituted C2 to C6 alkenylene, in which a substituent for substitution is halogen;
- and
- when A21, A22, A23, and A24 are selected from the structural formulas represented by Formula (III-C), 2 or 4 of A21, A22, A23, or A24 are independently selected from the structural formulas represented by Formula (III-C) concurrently, every two structural formulas represented by Formula (III-C) can bond with each other to form a cyclic structure, and an O atom adjacent to
- in Formula (III-C) is connected to a B atom at a center of Formula (III-A),
- wherein
- represents a site of bonding with an adjacent atom.
29 more elements
Dependencies are inferred from the claim text.