Non-aqueous electrolytic solution and non-aqueous electrolyte secondary battery using the same

Patent metadata

Field	Value
Publication number	US-10734680-B2
Application number	US-201615185855-A
Country	US
Kind code	B2
Filing date	Jun 17, 2016
Priority date	Dec 18, 2013
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

A task is to provide a non-aqueous electrolytic solution exhibiting excellent cycle capacity maintaining ratio and excellent low-temperature resistance characteristics and a non-aqueous electrolyte secondary battery using the same. An object of the present invention is to provide a non-aqueous electrolytic solution which improves the cycle capacity maintaining ratio and low-temperature resistance characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution. The present invention is a non-aqueous electrolytic solution comprising an electrolyte and a non-aqueous solvent dissolving therein the electrolyte, wherein the non-aqueous electrolytic solution contains a compound represented by formula (1), and a non-aqueous electrolyte secondary battery comprising the non-aqueous electrolytic solution.

First claim

The invention claimed is:

1. A non-aqueous electrolytic solution comprising an electrolyte and a non-aqueous solvent dissolving therein the electrolyte, the non-aqueous electrolytic solution containing at least one compound represented by the following formula (1):

wherein:
X represents an organic group containing a carbonyl group of the following formula:

wherein R 1 to R 3 independently represents a hydrogen atom or a hydrocarbon group having 1 to 12 carbon atoms,
Y represents a sulfur atom, a phosphorus atom, or a carbon atom,
n represents an integer of 1 or 2, in represents an integer of 2 to 4, and 1 represents an integer of 1 or 2, and
Z represents an alkylene group having 4 to 6 carbon atoms.

2. The non-aqueous electrolytic solution according to claim 1 , wherein the Y is a sulfur atom.

3. The non-aqueous electrolytic solution according to claim 1 , wherein the at least one compound represented by the formula (1) is contained in an amount of 0.01 to 5% by mass, based on 100% by mass of the non-aqueous electrolytic solution.

4. The non-aqueous electrolytic solution according to claim 1 , which further contains a cyclic carbonate having an unsaturated bond.

5. A non-aqueous electrolyte secondary battery comprising a negative electrode and a positive electrode each being capable of having occluded therein and releasing metal ions, and the non-aqueous electrolytic solution according to claim 1 .

6. The non-aqueous electrolyte secondary battery according to claim 5 , wherein the positive electrode capable of having occluded therein and releasing metal ions comprises at least one layer transition metal oxide.

7. The non-aqueous electrolyte secondary battery according to claim 5 , wherein the negative electrode capable of having occluded therein and releasing metal ions comprises at least one carbon compound.

Assignees

• Mitsubishi Chem Corp

Inventors

• Yoshida Hiroaki
• Kawakami Daisuke
• Fukamizu Koji

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• E21B43/103

  of expandable casings, screens, liners, or the like · CPC title

• E21B33/127

  with inflatable sleeve (E21B33/122, E21B33/124 take precedence) · CPC title

• E21B33/1208

  characterised by the construction of the sealing or packing means (E21B33/1277 takes precedence) · CPC title

• E21B2200/01

  Sealings characterised by their shape · CPC title