H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/1397 (2010.01) H01M 4/136 (2010.01)
Patent
CA 2502596
A method for preparing a positive electrode material for a lithium cell, characterized in that it comprises admixing a compound liberating a phosphate ion in a solution and metallic iron, and dissolving the metallic iron, followed by firing, thereby synthesizing ferric phosphate. The above method further comprising reacting a raw material mixture while grinding it down or refluxing can produce ferric phosphate positive electrode material having a fine particle diameter and exhibiting high activity, through a precursor before firing having a fine particle diameter.
Un procédé de préparation d'un matériau d'électrode positive destiné à une pile au lithium est caractérisé en ce qu'il consiste à ajouter par mélangeage un composé libérant un ion de phosphate dans une solution et du fer métallique et à dissoudre le fer métallique, l'opération étant suivie de cuisson et permettant la synthèse d'un phosphate ferreux. Le procédé de l'invention consiste ensuite à faire réagir un mélange de matière brute tout en effectuant le broyage ou le reflux en produisant du matériau d'électrode positive à base de phosphate ferreux, au moyen d'un précurseur possédant des particules de faible diamètre.
Chen Yike
Hatta Naoki
Okada Shigeto
Yamaki Jun-Ichi
Yamamoto Takafumi
Japan As Represented By President Of The University Of Kyusyu
Kirby Eades Gale Baker
Mitsui Engineering & Shipbuilding Co. Ltd.
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