H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/1397 (2010.01) C01B 25/45 (2006.01) H01M 4/136 (2010.01)
Patent
CA 2502592
A method for preparing a positive electrode material for a secondary cell, characterized in that it comprises admixing a compound liberating a phosphate ion in a solution (phosphoric acid H3PO4, phosphorus pentoxide PO5, ammonium dihydrogenphosphate NH4H2PO4 and the like), water and metallic iron, adding lithium carbonate, lithium hydroxide or a hydrate thereof to the resultant mixture, and firing the resultant reaction product, to thereby synthesize LiFePO4.
L'invention concerne un procédé de préparation d'un matériau d'électrode positive pour cellule secondaire, qui se caractérise par le fait qu'il consiste à mélanger un composé qui libère un ion de phosphate dans une solution (acide phosphorique H¿3?PO¿4?, pentoxyde de phosphore PO¿5?, dihydrogenphosphate d'ammonium NH¿4?H¿2?PO¿4 ?et autre similaire), de l'eau et du fer métallique, à ajouter du carbonate de lithium, de l'hydroxyde de lithium ou un hydrate de ce dernier au mélange obtenu, et à chauffer le produit de réaction obtenu afin de synthétiser LiFePO¿4?.
Hatta Naoki
Inaba Toshikazu
Okada Shigeto
Uchiyama Izumi
Yamaki Jun-Ichi
Japan As Represented By President Of The University Of Kyusyu
Kirby Eades Gale Baker
Mitsui Engineering & Shipbuilding Co. Ltd.
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