Sodium ion batteries

Details Sodium ion batteries Sodium ion batteries

H - Electricity

01

M

H01M 4/36 (2006.01) C01B 25/455 (2006.01) H01M 4/02 (2006.01) H01M 6/16 (2006.01) H01M 4/48 (2006.01) H01M 4/58 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2442257

Sodium ion batteries are based on sodium based active materials selected among compounds of the general formula: AaMb(XY4)cZ-d, wherein a comprises sodium, M comprises one or more metals, comprising at least one metal which is capable of undergoing oxidation to a higher valence state, Z is OH or halogen, and XY4 represents phosphate or a similar group. The anode of the battery includes a carbon material that is capable of inserting sodium ions. The carbon anode cycles reversibly at a specific capacity greater than 100mAh/g.

L'invention concerne des batteries à ions sodium basées sur des matériaux actifs à base de sodium choisis parmi les composés de formule générale: A¿a?M¿b?(XY¿4?)¿c?Z¿d?, dans laquelle A contient du sodium, M contient au moins un métal pouvant supporter une oxydation à un état de valence supérieur, Z représente OH ou halogène et XY¿4? représente phosphate ou un groupe similaire. L'anode de la batterie contient un matériau carboné pouvant insérer des ions sodium. Cette anode carbonée effectue un cycle réversible à une capacité déterminée supérieure à 100mAh/g.

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