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A zinc-air battery and zinc electrode technology, applied in battery electrodes, active material electrodes, circuits, etc., can solve the problems of battery capacity attenuation, poor electrical performance, and unsatisfactory effects, so as to improve discharge performance and facilitate the diffusion of ions , Inhibit the effect of passivation
Inactive Publication Date: 2012-01-04
SHANGHAI YAOYU INDAL
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[0004] The purpose of the present invention is to overcome the problems of hydrogen evolution, dendrites, deformation, etc. in the zinc electrode, which cause rapid battery capacity decay, poor electrical performance, and the existing problems of adding Pb, Bi, Ca and Al elements or adding inorganic and / or organic buffers. In order to provide a zinc-air battery that can more effectively inhibit hydrogen evolution, inhibit the formation of zinc dendrites, inhibit the passivation of the electrode, and better improve the discharge performance of the electrode. zinc electrode
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Embodiment 1
[0019] The zinc electrode is made by mixing and stirring zinc powder, binder, electrolyte and microcrystalline cellulose according to the proportion parameters in parts by weight. The parts by weight of each component are zinc powder 50, binder 3.5, electrolyte 60, micro Crystalline cellulose 0.35.
[0020] KOH content 50g, tetraalkylammonium hydroxide 1.0g, sodium dodecylbenzenesulfonate 2.0g, Zn compound 0.9g, K 2 CO 3 12g, the balance is distilled water.
Embodiment 2
[0022] The zinc electrode is made by mixing and stirring zinc powder, binder, electrolyte and microcrystalline cellulose according to the proportion parameters in parts by weight. The parts by weight of each component are zinc powder 50, binder 3.5, electrolyte 60, micro Crystalline cellulose 0.35.
[0023] KOH content 50g, tetraalkylammonium hydroxide 0.3g, sodium dodecylbenzenesulfonate 0.5g, Zn compound 0.9g, K 2 CO 3 12g, the balance is distilled water.
Embodiment 3
[0025] The zinc electrode is made by mixing and stirring zinc powder, binder, electrolyte and microcrystalline cellulose according to the proportion parameters in parts by weight. The parts by weight of each component are zinc powder 50, binder 3.5, electrolyte 60, micro Crystalline cellulose 0.35.
[0026] KOH content 50g, tetraalkylammonium hydroxide 1.5g, sodium dodecylbenzenesulfonate 2.5g, Zn compound 0.9g, K 2 CO 3 12g, the balance is distilled water.
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Abstract
The invention relates to a zinc electrode of a zinc-air battery. The zinc electrode is prepared through mixing and stirring zinc powder, an agglomerant, electrolyte, and microcrystalline cellulose according to a certain ratio, wherein the components comprise, by weight, 50 parts of the zinc powder, 0.5-5 parts of the agglomerant, 40-70 parts of the electrolyte and 0.1-0.5 parts of the microcrystalline cellulose. Each 100 ml of the electrolyte has 35-50 g of KOH, 0.3-1.5 g of Tetramethylammonium hydroxide, 0.5-2.5 g of sodium dodecylbenzene sulfonate, 0-1.5 g of a Zn compound, 0-15 g of K2CO3 and the balance of distilled water. Compared to the prior art, with the zinc electrode of the zinc-air battery provided by the present invention, the hydrogen evolution, the generation of the zinc dendrite, and the electrode passivation can be effectively inhibited, the discharge performance of the electrode can be improved better.
Description
Technical field [0001] The invention involves zinc -empty batteries, especially zinc electrodes of zinc -empty batteries. Background technique [0002] Zinc -empty batteries use metal zinc as negative active substances, oxygen in the air as positive active substances, and two active substances generate electrical energy in the catalytic layer of the air electrode in the interface of the air electrode and electrolyte.Zinc -empty battery raw materials are rich and easy to gain, stable discharge performance, high energy density, low cost and environmentally friendly, and widely used; however, due to the problems of hydrogen analysis, branches, deformation and other problems in its zinc electrodeWait, it affects the pace of commercialization of zinc -empty battery. [0003] Adding a certain amount of additives to zinc electrode is an important way to improve the performance of zinc electrode electrode.In batteries containing zinc electrodes, by using mercury to mix zinc granular merc...
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