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Mercury-free full-protection paste type zinc-manganese battery

A zinc-manganese battery and anti-paste technology, which is applied in dry batteries, battery pack components, circuits, etc., can solve problems such as implementation difficulties and unsatisfactory battery electrical performance, and achieve enhanced corrosion inhibition effect, good corrosion inhibition effect, and cost. low effect

Active Publication Date: 2010-12-22
GUANGZHOU TIGER HEAD BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is a major research topic to ensure the performance of batteries by using mercury substitute corrosion inhibitors. So far, the use of a single corrosion inhibitor has not been able to play a good role in corrosion inhibition, and the electrical performance of the battery is not as good as that of chlorinated corrosion inhibitors. Levels of mercury as a corrosion inhibitor
[0004] A large domestic battery factory uses PVA and B(OH) 3 The boron alcohol resin produced is mainly supplemented with cetyl or stearyl trimethyl ammonium chloride corrosion inhibitor to achieve mercury-free, but it is not suitable for the traditional electro-hydraulic formula and cell molding process. Changes required, difficult to implement

Method used

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  • Mercury-free full-protection paste type zinc-manganese battery
  • Mercury-free full-protection paste type zinc-manganese battery
  • Mercury-free full-protection paste type zinc-manganese battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] R20S mercury-free full anti-paste zinc-manganese battery electrolyte formula contains ZnCl per liter of electrolyte 2 15.5%, NH 4 Cl 20%, the balance is water; the ratio of flour and starch in each liter of electro-liquid is 3:7, and the slurry contains 8% flour, 18.5% starch, 2% polyacrylamide, 25% ammonium chloride, Zinc 14%, the balance is water. Mercury-free corrosion inhibitors are added to the slurry: cetyltrimethylammonium bromide (CTAB) 0.03%, sodium dodecylbenzenesulfonate (SDBS) 0.04%, bismuth trichloride (BiCl 3 )0.03%. Through stirring, filtering, and controlling the viscosity, make a mercury-free slurry, input it into the production line, inject it into the zinc cylinder, and form an isolation layer between the zinc cylinder and the battery core, and make the slurry mature and solidify through the gelatinization process without mercury corrosion inhibition. The agent is evenly distributed in it to play a role in inhibiting the corrosion of zinc.

Embodiment 2

[0024] The electrolyte formula and the slurry formula are the same as in Example 1, except that the mercury-free corrosion inhibitor cetyltrimethylammonium bromide (CTAB) 0.025%, sodium dodecylbenzenesulfonate (SDBS) are added to the slurry 0.035%, bismuth trichloride (BiCl 3 )0.05%.

Embodiment 3

[0026] The electrolyte formula and the slurry formula are the same as in Example 1, except that the mercury-free corrosion inhibitor cetyltrimethylammonium bromide (CTAB) 0.025%, sodium dodecylbenzenesulfonate (SDBS) are added to the slurry 0.035%, bismuth trichloride (BiCl 3 )0.04%.

[0027] The battery production process of the above three embodiments is the same as the traditional full anti-paste zinc-manganese battery production process. The open-circuit voltage of the battery produced according to the corrosion inhibitor ratio of the three examples is 1.65V-1.725V, the short-circuit current: ≥6.0A, and the electrical properties all meet the requirements of the GB8897.2-2005 standard.

[0028] Through the battery test, observe the corrosion situation of the inner surface of the new battery, the zinc cylinder stored for half a year and one year, it is shown that the three corrosion inhibitors of the present invention have synergistic corrosion inhibition effect.

[0029] ...

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Abstract

The invention discloses a mercury-free full-protection paste type zinc-manganese battery, and relates to an improved paste type zinc-manganese battery. The mercury-free full-protection paste type zinc-manganese battery comprises an iron bottom, a zinc barrel, an isolation layer, a battery cell, a carbon rod and a copper cap, wherein the isolation layer comprises main components of flour, starch, electrolyte and a mercury substituting inhibitor, and the mercury substituting inhibitor in the isolation layer comprises the following components in percentage by weight: 0.03 to 0.05 percent of sodium dodecyl benzene sulfonate, 0.025 to 0.04 percent of cetyl trimethyl ammonium bromide and 0.02 to 0.06 percent of bismuth trichloride. The anion and cation organic inhibitors are adopted for compounding, and inorganic inhibitors are added, so the synergy of various inhibitor is utilized to obviously enhance the corrosion inhibition effect. On the basis of the traditional paste type zinc-manganese battery process, the mercury-free full-protection paste type zinc-manganese battery has the advantages of no need of adjusting the production process, readily available materials of the inhibitors, low cost, electrical performance equal to that of mercury-containing batteries, and suitability for manufacturing paste-type zinc-manganese batteries in various models and specifications.

Description

technical field [0001] The invention relates to an improved paste zinc-manganese battery. Background technique [0002] Paste zinc-manganese battery is the most traditional civilian battery, which has the advantages of simple structure, easy-to-obtain materials, mature technology, low cost and good inter-discharge performance. [0003] Alkaline zinc-manganese batteries in primary batteries have been mercury-free in my country, but for ordinary zinc-manganese batteries including paste zinc-manganese batteries, the country's current environmental protection requirements are low mercury, requiring that the mercury content should not exceed 0.025%. The role of mercury is to add it to the battery as a corrosion inhibitor to inhibit the corrosion of zinc and improve the storage performance of the battery. It is difficult to remove mercury from paste batteries. From the perspective of sustainable development strategy, only by truly realizing no mercury in the battery and reducing ...

Claims

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Application Information

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IPC IPC(8): H01M6/06H01M2/16H01M50/411H01M50/431H01M50/446
Inventor 邱仕洲刘煦何永洪潘燕锋
Owner GUANGZHOU TIGER HEAD BATTERY GROUP
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