Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 13, 2010
Patent Application Number
11723386
Date Filed
March 19, 2007
Patent Primary Examiner
Patent abstract
The positive electrode active material of a positive electrode includes a sodium-containing transition metal oxide (NaaLibMxO2±α). The M includes at least two of manganese (Mn), iron (Fe), cobalt (Co), and nickel (Ni). For a negative electrode, a sodium metal or a metal that forms an alloy with sodium is used. A non-aqueous electrolyte produced by dissolving an electrolytic salt (sodium salt) in a non-aqueous solvent is used. Examples of the non-aqueous solvent may include a cyclic carbonate, a chain carbonate, esters, cyclic ethers, chain ethers, nitrites, amides and a combination thereof.
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