| http://www.w3.org/ns/prov#value | - The negative electrode active material may includes, in addition to graphite, carbon materials such as amorphous carbon, materials which can form alloys with Li such as Si, Sn, or Al, Si oxides, Si composite oxides containing Si and metal elements other than Si, Sn oxides, Sn composite oxides containing Sn and metal elements other than Sn, or Li4Ti5O12, wherein these materials may be mixed for use
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