US 2026/0253960 A1 · NONAQUEOUS ELECTROLYTE AND NONAQUEOUS ELECTROLYTE ENERGY STORAGE DEVICE

Abstract

A nonaqueous electrolyte according to an aspect of the present invention, for use in a nonaqueous electrolyte energy storage device with a negative electrode containing a silicon-based active material, contains an electrolyte salt, a nonaqueous solvent including a fluorinated cyclic carbonate and a fluorinated chain solvent, and a cyclic compound containing a sulfur element, and the content ratio of the fluorinated cyclic carbonate in the nonaqueous solvent is 5% by volume or more.

Claims16

Dependent claims

A nonaqueous electrolyte for use in a nonaqueous electrolyte energy storage device with a negative electrode containing a silicon-based active material, the nonaqueous electrolyte comprising:

an electrolyte salt;
a nonaqueous solvent including a fluorinated cyclic carbonate and a fluorinated chain solvent;
and
a cyclic compound containing a sulfur element,
wherein a content ratio of the fluorinated cyclic carbonate in the nonaqueous solvent is 5% by volume or more.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/874,681Filed 7 Jun 2023

Priority

JP 2022-09756916 Jun 2022

Published

27 Aug 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

H01G 11/06
Hybrid capacitors: with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
H01M 10/0569
Liquid materials: characterised by the solvents
H01G 11/30
Electrodes: characterised by their material
H01G 11/60
Liquid electrolytes: characterised by the solvent

Nonaqueous electrolyte and nonaqueous electrolyte energy storage device

Life of this patent

Nonaqueous electrolyte and nonaqueous electrolyte energy storage device

Life of this patent

Abstract

Claims16