Alkali/transition metal phosphates and related electrode...

Details Alkali/transition metal phosphates and related electrode... Alkali/transition metal phosphates and related electrode...

H - Electricity

01

M

H01M 4/485 (2010.01) H01M 4/131 (2010.01) H01M 4/136 (2010.01) H01M 10/052 (2010.01) H01M 4/58 (2010.01) C01B 25/45 (2006.01) C01B 33/20 (2006.01)

Patent

CA 2478507

Electrode active materials comprising lithium or other alkali metals, a transition metal, and a phosphate or similar moiety, of the formula: Aa+xMbP1- xSixO4 wherein (a) A is selected from the group consisting of Li, Na, K, and mixtures thereof, and 0 < a < 1.0 and 0 <= x <= 1; (b) M comprises one or more metals, comprising at least one metal which is capable of undergoing oxidation to a higher valence state, where 0 < b <= 2; and wherein M, a, b, and x are selected so as to maintain electroneutrality of said compound.

L'invention porte sur des matériaux actifs pour électrodes comportant du lithium et d'autres métaux alcalins, un métal de transition, et un phosphate ou autre fragment similaire, de formule ¿Aa+x MbP1-x??Si¿¿x?<SP>O</SP>¿4?? ¿dans laquelle: (i) A est choisi parmi Li, Na, K, et leurs mélanges; 0 < a < 1 et 0 = x = 1; (ii) M est un ou plusieurs métaux dont un au moins peut subir une oxydation jusqu'à un état supérieur de valence, et b étant 0 < b = 2; et M, a, b, et x sont choisis de manière à maintenir l'électroneutralité desdits composés.

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