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US 11,145,903 B2Granted
Functionalized sulfonyl fluoride additives for electrolyte composition for lithium ion batteries
AssigneeBASF SE
InventorsZhenji Han, Takeo Fukuzumi, Eri Sawada, Martin Schulz-Dobrick, Jinbum Kim
Life of this patent
Estimating the term…
Abstract
An electrolyte composition containing at least one aprotic organic solvent; at least one conducting salt; at least one compound of formula (I) and (vi) optionally one or more additives.
Claims15
An electrolyte composition, comprising:
- (i) at least one aprotic organic solvent;
- (ii) at least one conducting salt;
- (iii) at least one compound of formula (I)
- wherein
- L is a C1-C4 hydrocarbon linker group wherein one or more hydrogen may be replaced by CN and/or F;
- A is independently at each occurrence selected from (CH2)m1S(O)2(CH2)m2R1, (CH2)m3P(O)(OR2)2, and (CH2)m4C(O)OR3,
- R1 is independently at each occurrence selected from C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, which may be substituted by one or more substituents selected from F, CN, S(O)2F, S(O)2R1a, OR1a, and C(O)OR1a·;
- R1a is independently at each occurrence selected from C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, which may be substituted by one or more substituent selected from CN, F, S(O)2F, and non-fluorinated and fluorinated C1-C4 alkyl;
- R2 is independently at each occurrence selected from Si(R2a)3, Si(OR2a)3, C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, wherein alkyl, (hetero)cycloalkyl, alkenyl, alkynyl, (hetero)aryl, and (hetero)aralkyl may be substituted by one or more substituents selected from F and non-fluorinated and fluorinated C1-C4 alkyl;
- R2a is independently at each occurrence selected from C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, which may be substituted by one or more F;
- R3 is independently at each occurrence selected from C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, wherein alkyl, alkenyl, alkynyl, (hetero)aryl, and (hetero)aralkyl may be substituted by one or more substituents selected from CN, F and non-fluorinated and fluorinated C1-C4 alkyl;
- a is 1 or 2,
- b is 1 or 2;
- n and m2 are each independently at each occurrence an integer from 1 to 6;
- and
- m 1, m3 and m4 are each independently at each occurrence 0 or an integer from 1 to 6;
- wherein one or more H of the (CH2)n, (CH2)m1, (CH2)m2, (CH2)m3, and (CH2)m4 chains may be replaced by F;
- and
- wherein if A is (CH2)m4C(O)OR3 then b is 2;
- and
- (iv) optionally one or more additives.
18 more elements
A method of preparing an electrolyte composition, the method comprising adding to the electrolyte composition Use of a compound of formula (I)
- wherein
- L is a C1-C4 hydrocarbon linker group wherein one or more hydrogen may be replaced by CN and/or F;
- A is independently at each occurrence selected from (CH2)m1 S(O)2(CH2)m2R1, (CH2)m3P(O)(OR2)2, and (CH2)m4C(O)OR3;
- R1is independently at each occurrence selected from C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, which may be substituted by one or more substituents selected from F, CN, S(O)2F, S(O)2R1a, OR1a, and C(O)OR1a·;
- R1a is independently at each occurrence selected from C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, which may be substituted by one or more substituent selected from CN, F, S(O)2F, and non-fluorinated and fluorinated C1-C4 alkyl;
- R2 is independently at each occurrence selected from Si(R2a)3, Si(OR2a)3, C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, wherein alkyl, (hetero)cycloalkyl, alkenyl, alkynyl, (hetero)aryl, and (hetero)aralkyl may be substituted by one or more substituents selected from F and non-fluorinated and fluorinated C1-C4 alkyl;
- R2a is independently at each occurrence selected from C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, which may be substituted by one or more F;
- R3 is independently at each occurrence selected from C1-C10 alkyl, C3-C6 (hetero)cycloalkyl, C2-C10 alkenyl, C2-C10 alkynyl, C5-C7 (hetero)aryl, and C6-C13 (hetero)aralkyl, wherein alkyl, alkenyl, alkynyl, (hetero)aryl, and (hetero)aralkyl may be substituted by one or more substituents selected from CN, F and non-fluorinated and fluorinated C1-C4 alkyl;
- a is 1 or 2;
- b is 1 or 2;
- n and m2 are each independently an integer from 1 to 6;
- and
- m 1, m3 and m4 are each independently 0 or an integer from 1 to 6;
- wherein one or more H of the (CH2)n, (CH2)m1, (CH2)m2, (CH2)m3, and (CH2)m4 chains may be replaced by F;
- and
- wherein if A is (CH2)m4C(O)OR3 then b is 2.
13 more elements
Dependencies are inferred from the claim text.