CN101453015A - Zincium electrode production method for zinc-nickel battery - Google Patents

Zincium electrode production method for zinc-nickel battery Download PDF

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Publication number
CN101453015A
CN101453015A CNA2007100780272A CN200710078027A CN101453015A CN 101453015 A CN101453015 A CN 101453015A CN A2007100780272 A CNA2007100780272 A CN A2007100780272A CN 200710078027 A CN200710078027 A CN 200710078027A CN 101453015 A CN101453015 A CN 101453015A
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CN
China
Prior art keywords
zinc
electrode
nickel
silver
parts
Prior art date
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Pending
Application number
CNA2007100780272A
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Chinese (zh)
Inventor
林甘红
韦海
张云朋
魏俊华
曹念荣
石斌
肖骞
王庆杰
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MEILING CHEMICAL PLANT
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MEILING CHEMICAL PLANT
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Priority to CNA2007100780272A priority Critical patent/CN101453015A/en
Publication of CN101453015A publication Critical patent/CN101453015A/en
Pending legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention discloses a method for manufacturing a zinc electrode of a zinc-nickel cell. A silver-plated foam nickel conductive framework is coated with 84 to 88 portions of zinc powder, 4 to 7 portions of calcium hydroxide, 0.5 to 1.0 portion of indium and 7 to 9 portions of adhesive which is a pasty active substance, is pressed and molded and is finally dried. The method has obvious function in habiting deformation of the zinc electrode and growth of dendritic crystal; with the method, as the hydrogen precipitation overpotential of silver is high, the hydrogen precipitation is inhibited to improve the charging efficiency of the zinc electrode; each part of the electrode has even density and thickness; the polarization potential and the electrodeposition efficiency have small difference; and the electrode is uneasy to deform so as to well inhibit the problem of rapid increase of the dendritic crystal of specific parts of the zinc electrode, thereby well solving the problems of deformation, the dendritic crystal and short service life of the zinc electrode. The cyclic life of the nickel-zinc cell is increased from 200 cycles to 350 cycles. The method solves the problem of difficult sealing of the zinc-nickel cell.

Description

A kind of manufacture method of zinc-nickel cell zinc electrode
Technical field:
The present invention relates to a kind of long-life zinc-nickel cell zinc electrode manufacture method, belong to zinc-nickel cell zinc electrode technical field.
Background technology:
Zinc-nickel cell has in the zinc-silver oxide cell the long-life superior function of nickel electrode in the zinc negative pole high power capacity and ickel-cadmium cell concurrently.The outstanding advantage of zinc-nickel cell is: specific energy is higher, reaches 50Wh/kg~80Wh/kg; Specific power is bigger, can surpass 200W/kg; The operating temperature range broadness, can be between-20 ℃~+ 60 ℃ operate as normal.Raw-material wide material sources, cost is lower, and can not cause environmental pollution.
Its major defect mainly shows as:
1. charge and discharge circulation life is shorter.Zinc electrode easy deformation, dendrite in the cycle charge discharge process cause internal short-circuit of battery, thereby make battery end of life.Zinc electrode to charge and discharge cycle life shorter, be because the discharging product solubility of zinc negative pole in potassium hydroxide electrolyte is big, cause the active material migration, uneven zinc deposition takes place during charging.Zinc electrode also produced as dendritic deposit (dendrite) in the charging later stage, and the demolished sometimes barrier film of this dendroid deposit causes internal short-circuit of battery, makes battery end of life.
2. battery is difficult for sealing.Zinc-nickel cell can produce oxygen on the nickel electrode in charging process, has the generation of hydrogen simultaneously in the battery storing process, causes inner pressure of battery to raise, and causes the cell sealing difficulty.
Summary of the invention:
The object of the present invention is to provide a kind of zinc-nickel cell zinc electrode manufacture method, the prepared zinc-nickel cell zinc electrode of this method charge and discharge circulation life is long, easily sealing.
Technical scheme of the present invention: the manufacture method of zinc-nickel cell zinc electrode is to coat the paste active material on silver-plated nickel foam conducting matrix grain, again press forming, oven dry at last.
Described silver-plated nickel foam is by plating one deck transition metal copper earlier on the nickel foam surface, and then plates one deck silver in the above and make.
Described paste active material is composed as follows according to weight portion: zinc powder: 84 parts~88 parts, and calcium hydroxide: 4 parts~7 parts, indium: 0.5 part~1.0 parts, bonding agent: 7 parts~9 parts.
Coat the paste active material on the silver-plated nickel foam conducting matrix grain, behind the press forming, 70 ℃ of oven dry down.
Owing to adopted above technical scheme, the present invention has tangible effect to distortion and the dendritic growth that suppresses zinc electrode, adopt the present invention, because the overpotential of hydrogen evolution of silver is very high, has suppressed separating out of hydrogen, the zinc electrode charge efficiency is improved, each several part density and thickness are more even on the electrode, polarization potential and electrodeposition efficiency difference are less, and electrode is not yielding, this with regard to good restraining the quick growing concern of indivedual positions zinc dendrite on the zinc electrode.Thereby well solved the low problem of distortion, dendrite, life-span of zinc electrode.The cycle life that makes zinc-nickel cell is from be increased to for 350 weeks in 200 weeks.And solved the problem of zinc-nickel cell sealing.
Embodiment
Embodiments of the invention 1: plate one deck transition metal copper earlier on the nickel foam surface, and then plate one deck silver in the above, adopt this silver-plated nickel foam as the zinc electrode conducting matrix grain; By following proportioning configuration active material, in weight portion, the Zn powder: 84 parts, Ca (OH) 2: 7 parts, In:1.0 part, bonding agent: 8 parts, the active material furnishing paste of this proportioning is coated on the conducting matrix grain, press forming, 70 ℃ down oven dry get final product.
Take before the present invention handles, zinc is deposition rate difficulty in the electrode that with the metal nickel screen is conducting matrix grain, can stop the formation of zinc nucleus mainly due to nickel (nickel oxide).And, in charging process, separate out hydrogen on the metallic nickel easily because the overpotential of hydrogen evolution of metallic nickel is lower, the hydrogen of separating out can make inner pressure of battery raise, and reduces the fail safe and the charge-discharge performance of sealed cell.Metallic nickel Netease is subjected to the corrosion of alkali simultaneously, and therefore, it is shorter that the employing nickel screen is made the battery life of collector.
And zinc deposits in the electrode that with silver is conducting matrix grain just and how has been easy to.In order to reduce cost, improve the performance of nickel foam collector simultaneously, during we adopt on the nickel foam silver-plated method suppress the generation of hydrogen.Be because the overpotential of hydrogen evolution of silver is very high on the one hand, suppressed separating out of hydrogen, the zinc electrode charge efficiency is improved, each several part density and thickness are more even on the electrode, polarization potential and electrodeposition efficiency difference are less, electrode is not yielding, this with regard to good restraining the quick growing concern of indivedual positions zinc dendrite on the zinc electrode.Thereby well solved the low problem of distortion, dendrite, life-span of zinc electrode.
Embodiments of the invention 2: dispose active material by weight, the Zn powder: 88 parts, Ca (OH) 2: 4 parts, In:0.5 part, bonding agent: 7.5 parts.All the other are with embodiment 1.

Claims (4)

1, a kind of manufacture method of zinc-nickel cell zinc electrode is characterized in that: coat the paste active material on silver-plated nickel foam conducting matrix grain, again press forming, oven dry at last.
2, the manufacture method of zinc-nickel cell zinc electrode according to claim 1 is characterized in that: described silver-plated nickel foam is by plating one deck transition metal copper earlier on the nickel foam surface, and then plates one deck silver in the above and make.
3, the manufacture method of zinc-nickel cell zinc electrode according to claim 1, it is characterized in that: described paste active material is composed as follows according to weight portion: zinc powder: 84 parts~88 parts, calcium hydroxide: 4 parts~7 parts, indium: 0.5 part~1.0 parts, bonding agent: 7 parts~9 parts.
4, the manufacture method of zinc-nickel cell zinc electrode according to claim 1 is characterized in that: coat the paste active material on the silver-plated nickel foam conducting matrix grain, behind the press forming, 70 ℃ of oven dry down.
CNA2007100780272A 2007-11-28 2007-11-28 Zincium electrode production method for zinc-nickel battery Pending CN101453015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2007100780272A CN101453015A (en) 2007-11-28 2007-11-28 Zincium electrode production method for zinc-nickel battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2007100780272A CN101453015A (en) 2007-11-28 2007-11-28 Zincium electrode production method for zinc-nickel battery

Publications (1)

Publication Number Publication Date
CN101453015A true CN101453015A (en) 2009-06-10

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Family Applications (1)

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CNA2007100780272A Pending CN101453015A (en) 2007-11-28 2007-11-28 Zincium electrode production method for zinc-nickel battery

Country Status (1)

Country Link
CN (1) CN101453015A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104143634A (en) * 2013-05-07 2014-11-12 沈阳鑫科能源技术有限公司 A foamed zinc electrode material of a zinc-air battery and a preparing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104143634A (en) * 2013-05-07 2014-11-12 沈阳鑫科能源技术有限公司 A foamed zinc electrode material of a zinc-air battery and a preparing method thereof

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Open date: 20090610

C02 Deemed withdrawal of patent application after publication (patent law 2001)