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OwnerRustam Aminovich Mirzoev, Mikhail Ivanovich Styrov +2inventors
InventorsRustam Aminovich Mirzoev, Mikhail Ivanovich Styrov, Natalya Iliinichna Stepanova, Alexandr Ivanovich Maiorov
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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.
A positive electrode for an electrochemical energy storage device of high specific power comprising active element interacting with aqueous alkaline electrolyte of the electrochemical energy storage device in the process of redox charge-discharge reactions characterized in that the active element is made of electron-conductive electrolytic alloy having the composition M(l-x-y)OxHy, where M is nickel or nickel-based alloy, x is the atomic fraction of absorbed oxygen in the electrolytic alloy being within the limits of 0.01 to 0.4, y is the atomic fraction of absorbed hydrogen in the electrolytic alloy being within the limits of 0.01 to 0.4, whereby the said electrolytic alloy simultaneously fulfils the functions of current-carrying collector and of active material participating in the processes of redox charge-discharge reactions.
The electrode according to claim I characterized in that the atomic fraction x of absorbed oxygen in the electrolytic alloy is preferably within the limits of 0.05 to 0.4.
A negative electrode for an electrochemical energy storage device of high specific power comprising active element interacting with aqueous alkaline electrolyte of the electrochemical energy storage device in the process of redox charge-discharge reactions characterized in that the active element is made of electron-conductive electrolytic alloy having-the composition M(l-x-y)OxHy, where M is a metal of the group:
An electrochemical energy storage device of high specific power containing at least one negative and one positive electrodes submerged in aqueous alkaline electrolyte and separated with a layer of ion-conductive but non electron-conductive material, whereby each electrode contains an active element interacting with the electrolyte in the process of charge-discharge redox reactions characterized in that the active element of each electrode is made out of an electron-conductive electrolytic alloy having composition M(l-x-y)OxHy, where M for positive electrode is nickel or an alloy on the basis of nickel, M for negative electrode is a metal out of the following metal group:
An electrochemical energy storage device of high specific power containing at least one negative and one positive electrodes submerged in aqueous alkaline electrolyte and separated with a layer of ion-conductive but non electron-conductive material, whereby each electrode contains an active element interacting with the electrolyte in the process of charge-discharge redox reactions characterized in that the active element of the negative electrode is made of an electron-conductive electrolytic alloy having composition M(l-x-y)OxHy, where M is a metal out of the following group:
An electrochemical energy storage device of high specific power containing at least one negative and one positive electrodes submerged in aqueous alkaline electrolyte and separated with a layer of ion-conductive but non electron-conductive material, whereby each electrode contains an active element interacting with the electrolyte in the process of charge-discharge redox reactions characterized in that active element of positive electrode is made of an electron-conductive electrolytic alloy having composition M(l-x-y)OxHy, where M is nickel or an alloy on the basis of nickel, x is an atomic fraction of absorbed oxygen in the electrolytic alloy being within the limits of 0.01 to 0.4, y is atomic fraction of absorbed hydrogen in the electrolytic alloy being within the limits of 0.01 to 0.4, whereby the said electrolytic alloy simultaneously fulfils the functions of both current-carrying collector and of active material participating in the processes of redox charge-discharge reactions of positive electrode.
Dependencies are inferred from the claim text.