Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2005-01-18
2005-01-18
Parsons, Thomas H. (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S221000, C429S223000
Reexamination Certificate
active
06844111
ABSTRACT:
The claimed invention relates to electrical engineering, and in particular to production of rechargeable electrochemical energy storage devices of high specific power. Positive and negative electrodes for electrochemical energy storage device of high specific power according to the invention comprise active element interacting with aqueous alkaline electrolyte in the process of redox charge-discharge reactions made of electron-conductive electrolytic alloy having composition M(l-x-y)OxHy, where M for positive electrode is nickel or nickel-based alloy, M for negative electrode—a metal out of the group: iron, nickel, cobalt or an alloy on the basis of a metal out of this group, x is atomic fraction of absorbed oxygen in the electrolytic alloy being within the limits of 0.01≦x≦0.4, for positive electrode preferably in the limits of 0.05≦x≦0.4, y is atomic fraction of absorbed hydrogen in the electrolytic alloy being within the limits of 0.01≦y≦0.4, for negative electrode preferably in the limits of 0.05≦y≦0.4, the said electrolytic alloy functioning simultaneously as current-carrying collector and as active material.Electrochemical energy storage devices of high specific power according to three embodiments of the invention comprise at least one negative and one positive electrodes submerged in aqueous alkaline electrolyte and divided by a separator—a layer of ion-conductive but non electron-conductive material.Enhancement of service life owing to increase in number of recharge cycles under conditions of elimination of ecological harmful cadmium is the technical result achieved by the invention.
Maiorov Alexandr Ivanovich
Mirzoev Rustam Aminovich
Stepanova Natalya Iliinichna
Styrov Mikhail Ivanovich
Gugliotta John D.
Parsons Thomas H.
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