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Electroplating method for negative pole case of mercury-free alkaline battery

A technology for alkaline batteries and negative poles of batteries, which is applied in the field of electroplating of negative shells of mercury-free alkaline batteries, can solve problems such as rough appearance, high inflation rate, and environmental pollution, and achieves easy popularization and application, prevention of gas expansion, and simple method easy effect

Inactive Publication Date: 2009-07-29
杜强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Taking the button battery as an example, there are currently three methods of electroplating the negative shell of the battery: one is alkaline electroplating tin, which has the advantage of low cost, but the biggest disadvantage is high inflation rate, soft and not dense coating, and Rough appearance
The second is acid tin plating, which has the advantage of low cost, but its fatal disadvantage is that the inflation rate is extremely high, and it is almost useless
The third is the electroplating indium process, which is simple, easy to maintain, and low inflating rate. Although the price of conductive salt is high, it is still an option; but the recent situation is extremely pessimistic, because not only the conductive salt The price is very high, and more importantly, the price of electrolytic indium has risen ten times rapidly. In the past two years, the price of electrolytic indium has been hovering at 7,000-10,000 yuan / KG and has remained high. , the electroplating indium process controlled by high cost will face the bad luck of being eliminated
[0004] The present invention is based on serious and sufficient investigation, understanding, analysis, and summary of existing known technologies, and on the premise of analyzing market rules and grasping market prospects, in order to overcome and solve the existing problems of bloating and pollution in button batteries. Succeeded in the development of environmental deficiencies, defects and drawbacks

Method used

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  • Electroplating method for negative pole case of mercury-free alkaline battery
  • Electroplating method for negative pole case of mercury-free alkaline battery
  • Electroplating method for negative pole case of mercury-free alkaline battery

Examples

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Effect test

specific Embodiment approach 2

[0067] Carry out according to specific embodiment one, just: the electroplating method of described a kind of mercury-free alkaline battery negative electrode case, in the multi-element alloy plating bath based on one liter of copper-tin alloy, contain:

[0068] 6 grams of copper ions provided by cuprous cyanide,

[0069] 20 g of free cyanogen provided by potassium cyanide,

[0070] 10 g of tin ions provided by potassium stannate,

[0071] Sodium hydroxide 0.71 g,

[0072] Provided by sulfates, oxides, organic salts, halogen compounds, amphoteric metal salts, nitrates, hydroxides and containing indium, zinc, cobalt, nickel, zirconium, molybdenum, palladium, lead, Trace metal ions of bismuth ions 500PPM,

[0073] 0.01 g of organic matter provided by the nonionic surfactant;

[0074] Follow the steps below:

[0075] ①. Select the metal sheet of stainless steel sheet to make the battery negative shell;

[0076] ②. Plating bright watt nickel on the battery negative shell;

...

specific Embodiment approach 3

[0082] Carry out according to specific embodiment one, just: the electroplating method of described a kind of mercury-free alkaline battery negative electrode case, in the multi-element alloy plating bath based on one liter of copper-tin alloy, contain:

[0083] 10 g of copper ions provided by copper oxide,

[0084] 30 g of free cyanide provided by sodium cyanide,

[0085] Tin ions provided by sodium stannate 15 g,

[0086] Potassium hydroxide 17 g,

[0087] Provided by sulfates, oxides, organic salts, halogen compounds, amphoteric metal salts, nitrates, hydroxides and containing indium, zinc, cobalt, nickel, zirconium, molybdenum, palladium, lead, Trace metal ions of bismuth ions 1500PPM,

[0088] 1.5 grams of organic matter provided by anions containing 6-20 carbon chains;

[0089] Follow the steps below:

[0090] ①. Select the metal sheet of the iron sheet to make the battery negative shell;

[0091] ②. Plating bright watt nickel on the battery negative shell;

[009...

specific Embodiment approach 4

[0097] Carry out according to specific embodiment one, just: the electroplating method of described a kind of mercury-free alkaline battery negative electrode case, in the multi-element alloy plating bath based on one liter of copper-tin alloy, contain:

[0098] Copper ions provided by cuprous cyanide 14 g,

[0099] 40 g of free cyanogen provided by potassium cyanide,

[0100] Tin ions provided by potassium stannate 20 g,

[0101] Sodium hydroxide 12.15 g,

[0102] Provided by sulfates, oxides, organic salts, halogen compounds, amphoteric metal salts, nitrates, hydroxides and containing indium, zinc, cobalt, nickel, zirconium, molybdenum, palladium, lead, Trace metal ions of bismuth ions 2500PPM,

[0103] 1.5 grams of organic matter provided by nonionic surfactant;

[0104] Follow the steps below:

[0105] ①. Select the metal sheet of stainless steel sheet to make the battery negative shell;

[0106] ②. Plating bright watt nickel on the battery negative shell;

[0107] ...

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Abstract

the invention discloses a plating method of non-mercury alkaline battery cathode case, which comprises the following parts: 3-20g Cu ion, 10-60f free CN, 4-30g tin ion, 1-35g KOH or 0.71-25g NaOH, 5-5000PPM micro-dose metal ion and 0.01-3g organics in each Cu-Tin alloy. the case is made of 20-77% Ni, 20-77% Cu, and 0.1-3% Cu-Tin alloy, which forms cathode case with pH value at 11-14 and 0.15-2.5 A / cm2 and 20-60 deg.c for 40-240 min.

Description

technical field [0001] The invention relates to an electroplating method for a negative electrode shell of a mercury-free alkaline battery, and relates to the technical field of batteries; in particular, it relates to the technical field of a mercury-free alkaline battery; in particular, it relates to the technical field of an electroplating method for a negative electrode shell of a mercury-free alkaline battery. Background technique [0002] The current electric cell battery, because of the raw material "zinc" inside, must add mercury to prevent "zinc" from expanding when it contacts with other raw materials or metals; because mercury is added to the battery, and mercury is extremely Substances that are difficult to degrade, so discarded batteries will inevitably cause extremely serious pollution to the environment; button batteries are no exception. With the continuous enhancement of environmental awareness, in order to ensure the sustainable development of social economy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D5/12C25D3/58H01M4/08
Inventor 杜强
Owner 杜强
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