Electrolyte solution, electrochemical device, lithium ion secondary battery, and module

Patent metadata

Field	Value
Publication number	US-2021043974-A1
Application number	US-201917041721-A
Country	US
Kind code	A1
Filing date	Mar 11, 2019
Priority date	Mar 27, 2018
Publication date	Feb 11, 2021
Grant date	—

Abstract

An electrolyte solution containing a compound (1) represented by the formula (1), (wherein R 101 and R 102 are each individually a substituent such as a C1-C7 alkyl group, and the substituent optionally contains at least one divalent to hexavalent hetero atom in a structure or optionally has a structure obtained by replacing at least one hydrogen atom by a fluorine atom or a C0-C7 functional group) and at least one compound (11) selected from compounds such as a compound represented by formula (11-1) (wherein R 111 and R 112 are the same as or different from each other and are each a hydrogen atom or the like, and R 113 is an alkyl group free from a fluorine atom or the like):

First claim

1 . An electrolyte solution comprising a compound (1) represented by the following formula (1) and at least one compound (11) selected from the group consisting of compounds represented by the following formulas (11-1) to (11-5),
the formula (1) being

wherein R 101 and R 102 are each individually a substituent represented by
—H,
—F,
a group represented by the formula: —O p101 —(SiR 103 2 O) n101 —SiR 104 3 wherein R 103 and R 104 are each individually an alkyl group obtained by optionally replacing at least one hydrogen atom by a fluorine atom, an alkenyl group obtained by optionally replacing at least one hydrogen atom by a fluorine atom, an alkynyl group obtained by optionally replacing at least one hydrogen atom by a fluorine atom, or an aryl group obtained by optionally replacing at least one hydrogen atom by a fluorine atom; n101 is an integer of 0 or greater; and p101 is 0 or 1,
a C1-C7 alkyl group,
a C2-C7 alkenyl group,
a C2-C7 alkynyl group,
a C6-C15 aryl group,
—SO 2 X 101 wherein X 101 is —H, —F, or an alkyl group obtained by optionally replacing at least one hydrogen atom by a fluorine atom,
—SO 3 X 102 , wherein X 102 is —H, —F, or an alkyl group obtained by optionally replacing at least one hydrogen atom by a fluorine atom, or
a C2-C7 hydrocarbon group that forms a cyclic structure by bonding of R 101 and R 102 , the cyclic structure optionally containing a multiple bond, and
the substituent optionally contains at least one divalent to hexavalent hetero atom in a structure or optionally has a structure obtained by replacing at least one hydrogen atom by a fluorine atom or a C0-C7 functional group,
the formula (11-1) being

wherein R 111 and R 112 are the same as or different from each other and are each a hydrogen atom, a fluorine atom, or an alkyl group optionally containing a fluorine atom, and R 113 is an alkyl group free from a fluorine atom or an organic group containing an unsaturated carbon-carbon bond,
the formula (11-2) being

wherein R 121 is an optionally fluorinated C1-C7 alkyl group, an optionally fluorinated C2-C8 alkenyl group, an optionally fluorinated C2-C9 alkynyl group, or an optionally fluorinated C6-C12 aryl group, and optionally contains at least one selected from the group consisting of O, Si, S, and N in a structure,
the formula (11-3) being

wherein R 131 and R 132 are (i) each individually H, F, an optionally fluorinated C1-C7 alkyl group, an optionally fluorinated C2-C7 alkenyl group, an optionally fluorinated C2-C9 alkynyl group, or an optionally fluorinated C5-C12 aryl group, or (ii) hydrocarbon groups binding to each other to form a 5- or 6-membered hetero ring with a nitrogen atom, and R 131 and R 132 each optionally contain at least one selected from the group consisting of O, S, and N in a structure,
the formula (11-4) being

wherein Rf 141 is CF 3 —, CF 2 H—, or CFH 2 —, and R 141 is an optionally fluorinated C2-C5 alkenyl group or an optionally fluorinated C2-C8 alkynyl group and optionally contains Si in a structure,
the formula (11-5) being
CH 3 CFX 151 COOR 151

wherein R 151 is a C1-C4 alkyl group, and X 151 is H or F.

2 . An electrochemical device comprising the electrolyte solution according to claim 1 .

3 . A lithium ion secondary battery comprising the electrolyte solution according to claim 1 .

4 . A module comprising the electrochemical device according to claim 2 .

5 . A module comprising the lithium ion secondary battery according to claim 3 .

Assignees

• Daikin Ind Ltd

Inventors

• Kinoshita Masakazu
• Hidaka Tomoya
• Shimooka Toshiharu
• Yamazaki Shigeaki
• Nakamura Hisako
• Yamada Takaya
• Suzuki Yuuki
• Kuwajima Yoshiko
• Takahashi Kenzou
• Yamauchi Akiyoshi
• Hayashi Kotaro

Classifications

• H01M2300/0025

  Organic electrolyte · CPC title

• H01M10/0567 Primary

  characterised by the additives · CPC title

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01G11/64

  characterised by additives · CPC title

• H01G11/06

  with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC] · CPC title