Positive electrode active material, lithium secondary...

Details Positive electrode active material, lithium secondary... Positive electrode active material, lithium secondary...

H - Electricity

01

M

H01M 4/58 (2010.01) C01B 25/45 (2006.01) H01M 4/04 (2006.01) H01M 4/62 (2006.01)

Patent

CA 2701675

The positive electrode active material of the invention has an olivine structure, and is represented by Li x M1-x MnPO4 (where 0 < x <=1, and M is an alkali metal element that is larger in ion radius than Li), and has a construction in which the inter-layer interval of MnO6 layers in the Li x M1-x MnPO4 is larger than the inter-layer interval of the MnO6 layers contained in LiMnPO4 as a reference substance.

Le matériau actif pour électrode positive présente une structure d'olivine et est représenté par LixM1-xMnPO4(où 0 < x = 1, et M est un élément métallique alcalin dont le rayon ionique est supérieur à celui du Li). Il possède une construction dans laquelle l'intervalle de l'intercouche des couches de MnO6 dans LixM1-xMnPO4 est supérieur à l'intervalle de l'intercouche des couches de MnO6 contenues dans LiMnPO4 comme substance de référence.

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