Title: Low flammability electrolytes for stable operation of electrochemical devices

Abstract

Low flammability and nonflammable localized superconcentrated electrolytes (LSEs) for stable operation of electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, are disclosed. Electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, including the low flammability and nonflammable LSEs are also disclosed. The low flammability and nonflammable LSEs include an active salt, a solvent comprising a flame retardant compound, wherein the active salt is soluble in the solvent, and a diluent in which the active salt is insoluble or poorly soluble. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.

Inventors:

Zhang, Ji-Guang; Chen, Shuru; Xu, Wu

Issue Date:

Tue Nov 12 00:00:00 EST 2019

Research Org.:

Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1600264

Patent Number(s):

10472571

Application Number:

15/788,188

Assignee:

Battelle Memorial Institute (Richland, WA)

Patent Classifications (CPCs):

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

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C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

C09K21/12 - containing phosphorus

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M10/052 - Li-accumulators
H01M10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
H01M10/056 - characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes {
H01M10/0567 - characterised by the additives
H01M10/0568 - characterised by the solutes
H01M10/0569 - characterised by the solvents
H01M10/4235 - {Safety or regulating additives or arrangements in electrodes, separators or electrolyte
H01M2004/8684 - {Negative electrodes}
H01M2300/0025 - Organic electrolyte
H01M2300/0028 - characterised by the solvent
H01M2300/0037 - Mixture of solvents
H01M4/405 - {Alloys based on lithium}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/10 - Energy storage
Y02E60/50 - Fuel cells

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DOE Contract Number:  

AC02-05CH11231; AC05-76RL01830

Resource Type:

Patent

Resource Relation:

Patent File Date: 10/19/2017

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; 42 ENGINEERING