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1. WO2020065455 - POROUS ELECTRODE, MEMBRANE-ELECTRODE ASSEMBLY, LIQUID FLOW BATTERY AND METHOD OF MAKING A POROUS ELECTRODE

Publication Number WO/2020/065455
Publication Date 02.04.2020
International Application No. PCT/IB2019/057873
International Filing Date 18.09.2019
IPC
H01M 4/86 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
H01M 4/96 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
96Carbon-based electrodes
H01M 4/88 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
88Processes of manufacture
H01M 8/18 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
18Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
CPC
H01M 4/8663
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
8663Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers
H01M 4/8668
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
8663Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers
8668Binders
H01M 4/8875
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
88Processes of manufacture
8875Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support
H01M 4/96
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
96Carbon-based electrodes
H01M 8/188
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
18Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
184Regeneration by electrochemical means
188by recharging of redox couples containing fluids; Redox flow type batteries
Applicants
  • 3M INNOVATIVE PROPERTIES COMPANY [US]/[US]
Inventors
  • PETKOVICH, Nicole D.
  • ACHARYA, Bharat R.
  • WEBER, Brian T.
  • YORDEM, Onur S.
Agents
  • WRIGHT, Bradford B. ,
  • FLORCZAK, Yen Tong,
  • BLANK, Colene H.,
  • HARTS, Dean M. ,
  • LEVINSON, Eric D.,
  • MAKI, Eloise J.,
  • NOWAK, Sandra K.,
  • RINGSRED, Ted K.,
Priority Data
62/735,62924.09.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) POROUS ELECTRODE, MEMBRANE-ELECTRODE ASSEMBLY, LIQUID FLOW BATTERY AND METHOD OF MAKING A POROUS ELECTRODE
(FR) ÉLECTRODE POREUSE, ASSEMBLAGE MEMBRANE-ÉLECTRODES, BATTERIE À CIRCULATION DE LIQUIDE ET PROCÉDÉ DE FABRICATION D'UNE ÉLECTRODE POREUSE
Abstract
(EN)
A porous electrode has first (110) and second (112) opposed major surfaces and comprises, based on the total weight on the porous electrode: 60 to 92.5 percent by weight of graphitic carbon fibers (120) having an average fiber diameter of 5 to 10 microns and an average length of 6 to 25 mm; 5 to 25 percent by weight of electrical ly-nonconductive reinforcing fibers (130) having an average fiber diameter of 5 to 25 microns and an average length of 3 to 50 mm, wherein the electrical ly-nonconductive reinforcing fibers are ceramic, glass, glass-ceramic, or a combination thereof; and 2.5 to 15 percent by weight of polymer fibers (140) selected from hydrocarbon polyolefin fibers, perfluorinated polymer fibers, partially fluorinated polymer fibers, chlorinated polyethylene fibers, polyvinyl chloride fibers, polysulfone fibers, polyaryletherketone fibers, and combinations thereof. At least some of the polymer fibers proximal to the first and second major surfaces are melt-bonded to each other. Methods of making the porous electrode, and a membrane-electrode assembly for a redox flow battery including the porous electrode are also disclosed.
(FR)
Une électrode poreuse a des première (110) et seconde (112) surfaces principales opposées et comprend, sur la base du poids total sur l'électrode poreuse : de 60 à 92,5 pour cent en poids de fibres de carbone graphitique (120) ayant un diamètre moyen de fibre de 5 à 10 microns et une longueur moyenne de 6 à 25 mm ; de 5 à 25 pour cent en poids de fibres de renforcement électriquement non conductrices (130) ayant un diamètre moyen de fibre de 5 à 25 microns et une longueur moyenne de 3 à 50 mm, les fibres de renforcement électriquement non conductrices étant en céramique, en verre, en vitrocéramique, ou en une combinaison de ceux-ci ; et de 2,5 à 15 pour cent en poids de fibres polymères (140) choisies parmi des fibres de polyoléfine d'hydrocarbure, des fibres polymères perfluorées, des fibres polymères partiellement fluorées, des fibres de polyéthylène chlorées, des fibres de polychlorure de vinyle, des fibres de polysulfone, des fibres de polyaryléthercétone et des combinaisons de celles-ci. Au moins une partie des fibres polymères proximales aux première et seconde surfaces principales sont liées par fusion les unes aux autres. L'invention concerne également des procédés de fabrication de l'électrode poreuse, et un assemblage membrane-électrodes pour une batterie redox comprenant l'électrode poreuse.
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