Non-aqueous electrolyte secondary battery and production method

Details Non-aqueous electrolyte secondary battery and production method Non-aqueous electrolyte secondary battery and production method

1994-07-13

1996-09-17

Kalafut, Stephen

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429232, 205 59, H01M 436

Patent

active

055567215

ABSTRACT:
A non-aqueous electrolyte secondary battery comprises at least a negative electrode, a positive electrode and a non-aqueous electrolyte. The negative electrode has an active material comprised of silicon or a silicon alloy containing lithium represented by composition formula Li.sub.x Si where x satisfies 0.ltoreq..times..ltoreq.5. The positive electrode has an active material comprised of a transition metal oxide. The non-aqueous electrolyte is a lithium ion-conductive non-aqueous electrolyte having at least one lithium compound comprised of one of an organic solvent and a solid polymer. The negative electrode active material is formed by absorption of lithium ions into the silicon resulting from an electrochemical reaction between the negative electrode and a lithium metal and/or a material containing lithium. A secondary battery having high voltage, high energy density, high reliability, improved current charge and discharge characteristics and a long cycle life is obtained.

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patent: 5278005 (1994-01-01), Yamauchi et al.
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