Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1995-09-26
1997-08-26
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429217, 429218, H01M 462, H01M 1040
Patent
active
056609485
ABSTRACT:
Non-aqueous electrochemical cells with improved performance can be fabricated by employing anodes comprising a composition having graphite particles that have a BET method specific surface area of about 6 to about 12 m.sup.2 /g and a crystallite height L.sub.c of about 100 nm to about 120 nm, and wherein at least 90% (wt) of the graphite particles are less than 16 .mu.m in size; a cathode; and a non-aqueous electrolyte containing a solvent and salt that is interposed between the anode and cathode. When employed in an electrochemical cell, the anode can attain a specific electrode capacity of at least 300 mAhr/g. The electrochemical cell has a cycle life of greater than 1500 cycles, and has a first cycle capacity loss of only about 10% to about 15%.
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Jew Charles
Skapars Anthony
Valence Technology Inc.
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