H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/04 (2006.01)
Patent
CA 2750743
The invention relates to a method for preparing an electrode composition, including a step of forming a suspension, in an unbuffered aqueous acid medium having a pH of 1 or in a buffered acid medium having a pH less than or equal to 4, containing an electrode active material in the form of particles of an element M selected from Si, Sn, and Ge, a polymer binder having reactive groups capable of reacting with hydroxyl groups in an acid medium, and an agent generating electronic conductivity. The invention also relates to the electrode obtained according to the method, as well as to a battery including such an electrode.
La présente invention concerne un procédé pour la préparation d'une composition d'électrode, comprenant une étape de mise en suspension, dans un milieu aqueux acide à pH1 non tamponné ou un milieu acide tamponné à un pH inférieur ou égal à 4, d'une matière active d'électrode sous forme de particules contenant un élément M choisi parmi Si, Sn, Ge, d'un liant polymère qui porte des groupes réactifs capables de réagir avec des groupes hydroxyle en milieu acide et d'un agent générant une conductivité électronique. L'invention concerne également l'électrode obtenue selon ce procédé ainsi qu'une batterie comprenant une telle électrode.
Guyomard Dominique
Lestriez Bernard
Mazouzi Driss
Roue Lionel
Centre National de La Recherche Scientifique (cnrs)
Robic
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