Centre National De La Recherche Scientifique

Toyota Motor Europe

Marie Guignard

Claude Delmas

Laurent Castro

Jun Yoshida

Elodie Guerin

Dany Carlier-Larregaray

A composition of general formula (1): Na[MnNiCr]O(1), wherein: 0.6≤x≤0.8; −0.1≤y≤0.1; 0.55≤a≤0.7; 0.25≤b≤0.3; c≤0.05; and a+b+c≤1.0, an intermediate product for preparing a composition of general formula (1) and a process of synthesis, wherein the mixed sodium-transition metal oxide of general formula (1) may generally show an essentially or solely P2 structure, and may be used as a positive electrode material for a sodium ion secondary battery.

Sodium layered oxides as cathode materials for sodium ion batteries and method of manufacturing the same

A mixed oxide of sodium and transition metals having the formula (1):Na[MnNiCo]O&#x2003;&#x2003;(1)wherein: 0.5&#x2264;x&#x2264;0.9, &#x2212;0.1&#x2264;y&#x2264;0.1, a+b+c=1, 4a+2b+3c=4&#x2212;x+2y, and 0&#x3c;c&#x2264;0.5. Further a process for producing such a mixed oxide, a positive electrode including such a mixed oxide and a sodium ion secondary battery including such a positive electrode.

Sodium layered oxide as cathode material for sodium ion battery

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Pessac, France

Marie Guignard