CN106169585A - A kind of method improving zinc electrode overpotential of hydrogen evolution - Google Patents

A kind of method improving zinc electrode overpotential of hydrogen evolution Download PDF

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Publication number
CN106169585A
CN106169585A CN201610816721.9A CN201610816721A CN106169585A CN 106169585 A CN106169585 A CN 106169585A CN 201610816721 A CN201610816721 A CN 201610816721A CN 106169585 A CN106169585 A CN 106169585A
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CN
China
Prior art keywords
zinc
zinc electrode
hydrogen evolution
method improving
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610816721.9A
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Chinese (zh)
Inventor
刘丽娟
石斌
魏俊华
何玉彬
袁再芳
李萌
胥涛
余波
曾凡华
初志超
覃韬
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Guizhou Meiling Power Supply Co Ltd
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Guizhou Meiling Power Supply Co Ltd
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Filing date
Publication date
Application filed by Guizhou Meiling Power Supply Co Ltd filed Critical Guizhou Meiling Power Supply Co Ltd
Priority to CN201610816721.9A priority Critical patent/CN106169585A/en
Publication of CN106169585A publication Critical patent/CN106169585A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/244—Zinc electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/26—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/26—Processes of manufacture
    • H01M4/28—Precipitating active material on the carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/26—Processes of manufacture
    • H01M4/30—Pressing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a kind of method improving zinc electrode overpotential of hydrogen evolution, it is characterised in that: by PbO and the Bi of 3 3.6% that active zinc powder and mass percent are 0.5 1%2O3After mix homogeneously, form blended zinc powder；Then according to the ratio that 100g blended zinc powder adds 3.0% PVA 30～31ml is mixed to form mixing calamine cream, spreads a stratus the most on a current collector female for body paper, mixing calamine cream is coated on collector, forms pending zinc electrode；By pending zinc electrode through compacting, chemical conversion, dried, form stand-by zinc electrode.

Description

A kind of method improving zinc electrode overpotential of hydrogen evolution
Technical field
A kind of method improving zinc electrode overpotential of hydrogen evolution of the present invention.
Background technology
Metallic zinc, as the negative electrode active material of alkaline battery, has higher specific energy and specific power, and electrode potential is relatively Negative, its anodic solution reaction polarization is less, and electrochemical equivalent is relatively low, and electrode process is reversible, and zinc resource enriches, low cost.To the greatest extent So, due to the thermodynamic phase of zinc itself, chemical activity, zinc electrode easily produces zinc branch in charge and discharge process to pipe Brilliant and be easily passivated or be corroded, deform serious.In practical implementation, the means mainly taked are to add list in zinc electrode Matter hydrargyrum or mercury oxide make zinc electrode amalgamate to suppress the self discharge of zinc electrode.The effect adding mercury oxide in zinc electrode is, During charging, HgO reduces early than ZnO, Hg Yu Zn of reduction forms alloy thus improve the overpotential of hydrogen evolution of zinc electrode, thus permissible Improve charge efficiency and the depth of charge of zinc electrode.Secondary cell adds mercury oxide, in addition to there is above effect, it is also possible to Suppress charge and discharge cycles and wet shelve during the precipitation of hydrogen, thus can keep the capacity of zinc electrode and reduce zinc The deformation of electrode, dendritic growth etc., in can also maintaining battery case, pressure is constant simultaneously, prevents electrolyte leakage etc..But due to Hydrargyrum has toxicity, the physical and mental health of harm direct labor.Therefore, other method is used to show to the overpotential of hydrogen evolution improving zinc electrode Obtain particularly important.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of method improving zinc electrode overpotential of hydrogen evolution, to reduce alkali Property negative electrode battery plate capacitance loss, reduce zinc electrode deformation, dendritic growth, suppression the wet charged process of battery gas analysis Go out, prevent casing rupture, potential safety hazard occurs.
The technical scheme is that a kind of method improving zinc electrode overpotential of hydrogen evolution, in zinc electrode add PbO and Bi2O3。
By the Bi of PbO and 3-3.6% that active zinc powder and mass percent are 0.5-1%2O3After mix homogeneously, form mixing Zinc powder；Then according to the ratio that 100g blended zinc powder adds 3.0% PVA 30～31ml is mixed to form mixing calamine cream, then at collection Fluid upper berth one stratus is female for body paper, is coated on collector by mixing calamine cream, forms pending zinc electrode；By pending Zinc electrode, through compacting, chemical conversion, dried, forms stand-by zinc electrode.
Described additive is analytical reagent.
Described active zinc powder is made up of the zinc powder of the oxide powder and zinc that mass fraction is 70%～80% and 20%～30%.
Described collector is the certain thickness netted silver skeleton collector through chemical conversion treatment, and wherein silver mass fraction is 99%。
Beneficial effects of the present invention: the present invention adds by selecting the metal-oxide that certain proportion overpotential of hydrogen evolution is high Agent, to improve the overpotential of hydrogen evolution of zinc electrode formation process, charging process, reduces hydrogen and separates out, thus increase charge efficiency.With Time reduce wet charged process zinc electrode capacitance loss and reduce zinc electrode corrosion, suppression hydrogen separate out, reduce potential safety hazard.
The Alkaline Zinc silver accumulator assembled by this kind of zinc electrode, compared with the zinc electrode using traditional preparation methods to prepare, The charging voltage of cell, discharge voltage can be improved, reduce the capacitance loss of cell.
The present invention is compared with existing zinc electrode manufacturing technology, and effect is obvious, simple to operate, nontoxic.
Accompanying drawing explanation
Fig. 1 is the schematic diagram using the technology of the present invention to prepare zinc electrode process.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the present invention is described in further detail by specific embodiment.
Embodiments of the invention: as it is shown in figure 1, the zinc oxide of 70%～80% and the zinc powder of 20%～30% are mixed After, add the Bi of the PbO and 3% of 1%2O3Additive, is mixed uniformly, and with the PVA aqueous solution that concentration is 3% by its furnishing cream Shape.In particular manufacturing craft, mixing calamine cream is coated on silver skeleton collector, through compacting, the techniques such as chemical conversion is dry, i.e. prepare Go out stand-by zinc electrode.
Stand-by zinc electrode is carried out single dress with silver electrode by barrier film, forms pole plate group.Pole plate is assembled into splendid attire single In the container of body, add a certain amount of electrolyte and get final product supplying power for outside.Barrier film can be regenerated cellulose film or polypropylene and non-volume Knit one or more of staple fibre felt.Electrolyte be concentration be 35% potassium hydroxide aqueous solution.
Zinc electrode prepared by the zinc electrode prepared by this method and traditional handicraft is all assembled into zinc with identical silver electrode Silver cell, the cell of the more traditional zinc electrode of single cell operation voltage prepared by this method is at 86mA/cm2Electric current is close When working under degree, running voltage height about 0.025V, after wet charged 2 months, circulate 5 cycles after, discharge capacity is high by about 30%.

Claims (5)

1. the method improving zinc electrode overpotential of hydrogen evolution, it is characterised in that: in zinc electrode, add PbO and Bi2O3。
A kind of method improving zinc electrode overpotential of hydrogen evolution the most according to claim 1, it is characterised in that: by active zinc powder Bi with PbO and 3-3.6% that mass percent is 0.5-1%2O3After mix homogeneously, form blended zinc powder；Then according to 100g mixes Conjunction zinc powder adds the ratio of 3.0% PVA 30～31ml and is mixed to form mixing calamine cream, spreads stratus mother's generation the most on a current collector Body paper, is coated on mixing calamine cream on collector, forms pending zinc electrode；By pending zinc electrode through compacting, change Become, dried, form stand-by zinc electrode.
A kind of method improving zinc electrode overpotential of hydrogen evolution the most according to claim 1, it is characterised in that: described interpolation Agent is analytical reagent.
A kind of method improving zinc electrode overpotential of hydrogen evolution the most according to claim 2, it is characterised in that: described activity Zinc powder is made up of the zinc powder of the oxide powder and zinc that mass fraction is 70%～80% and 20%～30%.
A kind of method improving zinc electrode overpotential of hydrogen evolution the most according to claim 2, it is characterised in that: described afflux Body is the certain thickness netted silver skeleton collector through chemical conversion treatment, and wherein silver mass fraction is 99%.
CN201610816721.9A 2016-09-12 2016-09-12 A kind of method improving zinc electrode overpotential of hydrogen evolution Pending CN106169585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610816721.9A CN106169585A (en) 2016-09-12 2016-09-12 A kind of method improving zinc electrode overpotential of hydrogen evolution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610816721.9A CN106169585A (en) 2016-09-12 2016-09-12 A kind of method improving zinc electrode overpotential of hydrogen evolution

Publications (1)

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CN106169585A true CN106169585A (en) 2016-11-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107978760A (en) * 2017-12-06 2018-05-01 贵州梅岭电源有限公司 A kind of zinc electrode is with for mercury compound additive
CN108777293A (en) * 2018-05-24 2018-11-09 中南大学 A kind of nanocomposite and its preparation method and application

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5773176A (en) * 1995-10-04 1998-06-30 Yardney Technical Products, Inc. Rechargeable alkaline silver-zinc cell with improved negative electrode
US20030099882A1 (en) * 2001-06-12 2003-05-29 Hampden-Smith Mark J. Methods and materials for the preparation of a zinc anode useful for batteries and fuel cells
CN102244303A (en) * 2011-06-09 2011-11-16 梅岭化工厂 Zinc-silver accumulator capable of work at low temperature

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5773176A (en) * 1995-10-04 1998-06-30 Yardney Technical Products, Inc. Rechargeable alkaline silver-zinc cell with improved negative electrode
US20030099882A1 (en) * 2001-06-12 2003-05-29 Hampden-Smith Mark J. Methods and materials for the preparation of a zinc anode useful for batteries and fuel cells
CN102244303A (en) * 2011-06-09 2011-11-16 梅岭化工厂 Zinc-silver accumulator capable of work at low temperature

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107978760A (en) * 2017-12-06 2018-05-01 贵州梅岭电源有限公司 A kind of zinc electrode is with for mercury compound additive
CN108777293A (en) * 2018-05-24 2018-11-09 中南大学 A kind of nanocomposite and its preparation method and application
CN108777293B (en) * 2018-05-24 2021-02-12 中南大学 Nano composite material and preparation method and application thereof

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Application publication date: 20161130