Sodium ion batteries

Details Sodium ion batteries Sodium ion batteries

2005-03-29

2005-03-29

Yuan, Dah-Wei (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S231200, C429S231500, C429S231950

Reexamination Certificate

active

06872492

ABSTRACT:
Sodium ion batteries are based on sodium based active materials selected among compounds of the general formula:in-line-formulae description="In-line Formulae" end="lead"?AaMb(XY4)cZd,in-line-formulae description="In-line Formulae" end="tail"?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 XY4represents 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 100 mAh/g.

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