Electrode active material for lithium secondary battery

Details Electrode active material for lithium secondary battery Electrode active material for lithium secondary battery

C - Chemistry, Metallurgy

01

B

C01B 25/45 (2006.01) C01G 23/00 (2006.01) H01M 4/58 (2010.01) H01M 10/052 (2010.01)

Patent

CA 2574042

Disclosed is a compound represented by the following formula 1. A lithium secondary battery using the same compound as electrode active material, preferably as cathode active material, is also disclosed. [Formula 1] LiMP1- xAxO4 wherein M is a transition metal, A is an element having an oxidation number of +4 or less and 0<x<l. The electrode active material comprising a compound represented by the formula of LiMPl-xAxO4 shows excellent conductivity and charge/discharge capacity compared to LiMPO4.

La présente invention concerne un composé représenté par la formule suivante 1. Cette invention concerne aussi un accumulateur auxiliaire au lithium utilisant ce composé comme matériau actif d'électrode, de préférence comme matériau actif de cathode. Formule (1) LiMPl-xAxO4. Dans cette formule M est un métal de transition, A est un élément possédant un numéro d'oxydation de plus 4 au maximum et 0<x<l. Ce matériau actif d'électrode comprenant un composé représenté par la formule LiMPl-xAxO4 présente une excellente conductivité et une excellente capacité de charge/décharge comparée à LiMPO4.

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