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1. WO2020072553 - HIGH-TEMPERATURE ALKALINE WATER ELECTROLYSIS USING A COMPOSITE ELECTROLYTE SUPPORT MEMBRANE

Publication Number WO/2020/072553
Publication Date 09.04.2020
International Application No. PCT/US2019/054152
International Filing Date 01.10.2019
IPC
H01M 10/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
04Construction or manufacture in general
H01M 10/052 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
H01M 10/0562 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0561the electrolyte being constituted of inorganic materials only
0562Solid materials
CPC
C25B 1/10
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
1Electrolytic production of inorganic compounds or non-metals
02of hydrogen or oxygen
04by electrolysis of water
10in diaphragm cells
C25B 13/02
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
13Diaphragms; Spacing elements
02characterised by form or shape
C25B 13/04
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
13Diaphragms; Spacing elements
04characterised by the material
C25B 9/08
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
9Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies
06Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
08with diaphragms
Applicants
  • GINER, INC. [US]/[US]
Inventors
  • XU, Hui
  • SWEET, Andrew
  • GREENE, Winfield
  • PATIL, Kailash
Agents
  • KRIEGSMAN, Edward, M
  • KRIEGSMAN, Daniel, S
Priority Data
62/739,41601.10.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HIGH-TEMPERATURE ALKALINE WATER ELECTROLYSIS USING A COMPOSITE ELECTROLYTE SUPPORT MEMBRANE
(FR) ÉLECTROLYSE D'EAU ALCALINE À HAUTE TEMPÉRATURE À L'AIDE D'UNE MEMBRANE DE SUPPORT D'ÉLECTROLYTE COMPOSITE
Abstract
(EN)
A composite membrane that is suitable for use in a molten alkaline water electrolyzer. In one embodiment, the composite membrane includes a porous support, the porous support being in the form of a matrix of metal oxide particles randomly arranged to form a plurality of tortuous pores. The composite membrane also includes molten electrolyte filling the pores of the porous support, the molten electrolyte having hydroxide ion conductivity. The molten electrolyte may be a single species of an alkali hydroxide or of an alkaline earth hydroxide. Alternatively, the molten electrolyte may be a eutectic or non-eutectic mixture of two or more species of alkali hydroxides or alkaline earth hydroxides. The composite membrane may further include one or more additives, such as a coarsening inhibitor, a crack attenuator, and a reinforcing material. The composite material may be used to make a molten alkaline membrane water electrolyzer with high electrical efficiencies.
(FR)
L'invention concerne une membrane composite qui est appropriée pour être utilisée dans un électrolyseur d'eau alcaline fondue. Dans un mode de réalisation, la membrane composite comprend un support poreux, le support poreux se présentant sous la forme d'une matrice de particules d'oxyde métallique agencées de manière aléatoire pour former une pluralité de pores sinueux. La membrane composite comprend également un électrolyte fondu remplissant les pores du support poreux, l'électrolyte fondu ayant une conductivité d'ion hydroxyde. L'électrolyte fondu peut être une seule espèce d'un hydroxyde alcalin ou d'un hydroxyde de terre alcaline. En variante, l'électrolyte fondu peut être un mélange eutectique ou non eutectique d'au moins deux espèces d'hydroxydes alcalins ou d'hydroxydes alcalino-terreux. La membrane composite peut en outre comprendre un ou plusieurs additifs, tels qu'un inhibiteur de grossissement, un atténuateur de fissures et un matériau de renforcement. Le matériau composite peut être utilisé pour fabriquer un électrolyseur d'eau à membrane alcaline fondue avec des rendements électriques élevés.
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