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

Patent metadata

Field	Value
Publication number	US-12272789-B2
Application number	US-201916965358-A
Country	US
Kind code	B2
Filing date	Jan 9, 2019
Priority date	Jan 30, 2018
Publication date	Apr 8, 2025
Grant date	Apr 8, 2025

Abstract

An electrolyte solution containing at least one compound represented by formula (1-1) and formula (1-2), formula (1-1) being:

where R 101 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 O, Si, S, and N in a structure; and formula (1-2) being:

where R 102 and R 103 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-membered or 6-membered hetero ring with a nitrogen atom; and R 102 and R 103 each optionally contain at least one selected from O, S, and N in a structure.

First claim

The invention claimed is:

1. An electrolyte solution, comprising:
a lithium salt; and
at least one selected from the group consisting of a compound represented by the following formula (1-1) and a compound represented by the following formula (1-2),
the formula (1-1) being:

wherein R 101 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 (1-2) being:

wherein R 102 and R 103 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-membered or 6-membered hetero ring with a nitrogen atom; and R 102 and R 103 each optionally contain at least one selected from the group consisting of O, S, and N in a structure.

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

• Kuwajima Yoshiko
• Yamauchi Akiyoshi
• Suzuki Yuuki
• Hayashi Kotaro
• Nakamura Hisako
• Yamada Takaya
• Shimooka Toshiharu
• Yamamoto Yoshihiro
• Yamazaki Shigeaki
• Takahashi Kenzou

Classifications

• H01M2300/0025

  Organic electrolyte · CPC title

• H01M10/0525 Primary

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

• C07D295/185

  from aliphatic carboxylic acids · CPC title

• C07C233/13

  with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom · CPC title

• C07C233/09

  with carbon atoms of carboxamide groups bound to carbon atoms of an acyclic unsaturated carbon skeleton · CPC title