Method for producing electrode composite material

Details Method for producing electrode composite material Method for producing electrode composite material

H - Electricity

01

M

H01M 4/62 (2006.01) H01M 4/02 (2006.01) H01M 4/04 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2517682

The invention relates to a method for producing material for composite electrode. The aim of said invention is to produce a composite material consisting of an active electrode material M1, a conductive material (C1), an organic binder and a salt. Said binder comprises a polymer (P1) whose mass composition in heteroatoms O, N, P or S is equal to or higher than 15 %, a polymer (P2) whose mass composition in heteroatoms O, N, P or S is equal or lower than 5 %, and an liquid non-volatile organic solvent (S1). Said method comprises a stage for preparing a viscous solution containing at least one type of polymers (P1) and P2, the material C1, the active electrode material M1 and at least one type of the liquid non-volatile organic solvent S1, and a stage consisting in forming a film from the thus obtained viscous solution.

L'invention concerne un procédé pour l'élaboration d'un matériau pour une électrode composite. Le procédé est destiné à la préparation d'un matériau composite constitué par une matière active d'électrode M1, un matériau conférant une conductivité électronique C1, un liant organique et un sel, ledit liant comprenant un polymère P1 ayant une composition massique en hétéroatome O, N, P ou S supérieure ou égale à 15%, un polymère P2 ayant une composition massique en hétéroatome O, N, P ou S inférieure ou égale à 5%, et un solvant organique liquide non volatil S1. Il comprend une étape consistant à préparer une solution visqueuse contenant au moins un polymère P1, au moins un polymère P2, un matériau C1, une matière active d'électrode M1, et au moins un solvant non volatil S1, et une étape consistant à former un film à partir de la solution visqueuse obtenue.

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