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Alkaline zinc-manganese battery capable of improving large power/current pulse discharge performance

A zinc-manganese battery and current pulse technology, which is applied to the electrodes of primary batteries and dry batteries, can solve the problems of low battery capacity, large polarization, short service life and unsuitable for development, and achieve easy-to-obtain materials and preparation methods Ease of operation and simple preparation method

Active Publication Date: 2015-09-16
ZHONGYIN NINGBO BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0027] In short, although electrolytic manganese dioxide is widely used as the active material of the positive electrode of alkaline manganese batteries due to its low price and environmental friendliness, it has large polarization under high power / current discharge conditions, and the rapid drop in positive electrode potential leads to early termination of discharge. / Current pulse (intermittent) discharge battery capacity is very low, short service life does not meet the needs of the current development of new digital electrical products, which greatly restricts the further expansion of the alkaline zinc-manganese battery market

Method used

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  • Alkaline zinc-manganese battery capable of improving large power/current pulse discharge performance
  • Alkaline zinc-manganese battery capable of improving large power/current pulse discharge performance
  • Alkaline zinc-manganese battery capable of improving large power/current pulse discharge performance

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preparation example Construction

[0059] Methods for preparing supercapacitor electrodes are known to those skilled in the art. Preferably, the current collector is coated with an electrode active material and wound.

[0060] More preferably, the supercapacitor electrode uses electrode active materials with a specific capacity of 10F / g-2000F / g and a power density of 10W / Kg-200KW / Kg.

[0061] The active material, a combination of one or more of carbon materials, metal oxides or conductive polymers:

[0062] (1) High specific surface area carbon material, said carbon material is preferably selected from activated carbon, ordered mesoporous carbon, carbide derived carbon, graphene, carbon aerogel, carbon fiber, carbon nanotube and onion carbon;

[0063] (2) Metal oxides, said metal oxides are preferably selected from RuO2, NiO, MnO2, Mn2O3, IrO, CoO, Co3O4, MoO, TiO2, V2O5, SnO2, Cr2O3, Fe3O4, Fe2O3, FeO;

[0064] (3) conductive polymer, the conductive polymer is preferably selected from polyaniline, polypropyl...

Embodiment 1

[0103] (1) The carbon material activated carbon (specific surface area is 2000m2 / g) is used as the supercapacitor active material, mixed with the conductive agent acetylene black and the PVDF binder, and then coated on the current collector foam Ni to obtain a supercapacitor electrode (total weight 0.6 g, activated carbon content 83%); (2) electrolytic manganese dioxide, graphite, zinc stearate, 40% KOH solution, weighed, dry mixed, wet mixed, pressed, granulated, sieved, shaped Then obtain MnO2 positive electrode ring (total weight 10.35g, MnO2 content 88.14%, purity 92%); (3) insert the positive electrode ring into the steel shell, then insert the separator paper and the supercapacitor electrode, and connect the steel shell and the supercapacitor electrode with a wire ; (4) Insert the separator paper in turn, inject zinc paste, insert the current collector composed of copper nails, negative bottom and sealing ring, crimp, shape and seal to obtain LR6 battery with high power p...

Embodiment 2

[0105] (1) The carbon material graphene (with a specific surface area of ​​200 m2 / g) was used as a supercapacitor active material, mixed with a conductive agent acetylene black and a PVDF binder, and then coated on a current collector stainless steel mesh to obtain a supercapacitor electrode (total weight 0.1 g, graphene content 95%); (2) electrolytic manganese dioxide, graphite, zinc stearate, 40% KOH solution, after weighing, dry mixing, wet mixing, tabletting, granulation, sieving, After forming, a MnO2 positive electrode ring was obtained (total weight 10.35g, MnO2 content 88.14%, purity 92%); (3) The positive electrode ring was embedded in the steel shell, then the separator paper and the supercapacitor electrode were inserted, and the steel shell and the supercapacitor electrode were connected with wires (4) Insert the separator paper in turn, inject zinc paste, insert the current collector composed of copper nails, negative bottom and sealing ring, crimp, shape and seal ...

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Abstract

The present invention discloses an alkaline zinc-manganese battery capable of improving large power / current pulse discharge performance. The alkaline zinc-manganese battery comprises cathode calamine cream, diaphragm paper and a composite anode; the cathode calamine cream is connected in series with the composite anode; the composite anode comprises a manganese dioxide electrode and a super capacitor electrode; the cathode calamine cream, the manganese dioxide electrode and the super capacitor electrode are mutually separated by the diaphragm paper; and the manganese dioxide electrode is connected in parallel with the super capacitor electrode. The alkaline zinc-manganese battery has the advantage of higher benefit for operating under a large current and higher benefit for working under the large current or a high power density than a common battery electrode.

Description

technical field [0001] The invention relates to an alkaline zinc-manganese battery, in particular to an alkaline zinc-manganese battery with improved high-power / current pulse discharge performance. Background technique [0002] The huge share of zinc-manganese batteries in the battery market is inseparable from its wide range of uses. It is the leading product of civilian primary batteries. Almost all low-voltage DC electrical appliances can use alkaline-manganese batteries as power sources. Alkaline zinc-manganese batteries have excellent electrochemical performance and high cost performance, and have always been welcomed by consumers. Since mercury-free alkaline zinc-manganese batteries were put into the market, safe, environmentally friendly high-performance alkaline zinc-manganese batteries have become more popular. The market is well-received and will be dominated by alkaline zinc-manganese batteries now and for decades to come. [0003] Alkaline zinc-manganese batteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/06H01M4/06
CPCH01M4/06H01M6/06
Inventor 崔言明黄园桥陈国标
Owner ZHONGYIN NINGBO BATTERY CO LTD
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