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US 5,308,714 AGranted
Method for preventing gas formation in electrochemical cells
AssigneeMedtronic, Inc.
InventorAnn M. Crespi
Life of this patent
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Abstract
A non-aqueous electrochemical cell comprising an active metal anode, an organic electrolyte and a cathode comprising a minor amount of V.sub.6 O.sub.13. The resulting cell has been found to be resistant to internal gas generation. The inclusion of V.sub.6 O.sub.13 is particularly useful in lithium/manganese dioxide cells.
Claims9
In a non-aqueous, hermetically sealed electrochemical cell having
- (a) an active metal anode;
- (b) an organic electrolyte;
- and
- (c) a cathode having a reactive cathode material susceptible to gassing on discharge, wherein the improvement comprises an amount of V.sub.6 O.sub.13 in the range of about 15% up to about 40% of the cathode weight added to the reactive cathode material.
1 more element
A method for preventing gas formation in a non-aqueous electrochemical cell comprising the steps of:
- (a) providing a reactive cathode material which is susceptible to gassing during discharge;
- and
- (b) adding to the reactive cathode material from about 15% up to about 40% of the cathode weight of V.sub.6 O.sub.13.
Dependencies are inferred from the claim text.