Electroplating liquid for nickel-cadmium battery negative pole and manufacturing method for nickel-cadmium battery negative pole

A nickel-cadmium battery and a manufacturing method technology, applied in the direction of alkaline storage battery electrodes, etc., can solve the problem of serious exothermic reaction of the negative electrode, and achieve the effects of good fast charging capability, fine and bright coating, and simple process

Inactive Publication Date: 2007-12-05
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of serious exothermic reaction of the negative electrode produced by the electroplating solution in the prior art, and to provide a kind of electroplating solution for the negative electrode of the nickel-cadmium battery that makes the negative electrode coating of the battery tightly bonded and has good heat release performance.

Method used

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  • Electroplating liquid for nickel-cadmium battery negative pole and manufacturing method for nickel-cadmium battery negative pole
  • Electroplating liquid for nickel-cadmium battery negative pole and manufacturing method for nickel-cadmium battery negative pole
  • Electroplating liquid for nickel-cadmium battery negative pole and manufacturing method for nickel-cadmium battery negative pole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Positive electrode production:

[0028] Manufactured by conventional technology: length: 63±2mm, width: 39±0.5mm, thickness: 0.65±0.035mm nickel positive plate, the dry weight of the active material mixture is about 3.5-3.6g.

[0029] Production of the negative electrode: use metal cadmium as the anode, conductive metal mesh as the cathode, the main salt is cadmium sulfate solution, the conductive salt is nickel sulfate, and it is prepared by electroplating and depositing sponge cadmium metal on the cathode substrate. The electrolytic solution used during electroplating is composed of 0.1mol / L sulfuric acid solution, 0.1mol / L cadmium sulfate and mixed additives. One or three kinds of compositions, plating solution is calculated by 100 unit weight parts, the mixed additive of present embodiment is: OP emulsifier 0.5 part, wetting agent saccharin 0.05 part and 102A 0.2 part, 102A is from Shenzhen Aotejia technology Limited purchased wetting agent. The ratio of the anode...

Embodiment 2

[0041] Replace the production of AA batteries in Example 1 with the production of SC batteries, but replace the weight of the positive and negative plates with the weight of D-SC1700, and the additives in 100 parts by weight of the electrolyte are: 1.0 parts of OP emulsifier, saccharin 0.1 part, 102A0.3 part and other manufacturing processes are the same as in implementation 1. The surface of the obtained pole piece is porous but relatively dense, and there will be no material drop when washed with water, and the obtained pole piece has a good effect.

[0042] Its 1C capacity is as high as 1750mAh, but the main performance requirement of this type of battery is high-current discharge, so this example aims to verify its cycle performance of high-current discharge: 1C cycle: 1C charge, -DeltaV = 15mV time limit 75min, put aside for 20min, 1700mA Discharge to 1.0V, put it on hold for 30min, cycle, see Figure 5 of the attached drawing for details, 10C cycle: change the discharge c...

Embodiment 3

[0049] In Example 1, the temperature of the plating solution when making the AA battery was changed to 55° C., and the rest of the conditions remained unchanged.

[0050] Its charge-discharge curve is basically consistent with that in Example 1, and the cycle performance and capacity retention rate are also good.

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Abstract

The present invention relates to one kind of electroplating solution for preparing negative electrode of nickel-cadmium cell. The electroplating solution consists of cadmium sulfate and additives, including brightener, wetting agent and emulsifier stable under acid condition. Thus prepared negative electrode of nickel-cadmium cell has active compact cadmium coating with great binding force. The present invention also relates to the making process of negative electrode of nickel-cadmium cell with the electroplating solution. The nickel-cadmium cell with the negative electrode has high capacity, high discharge power, excellent fast charging capacity and high current efficiency.

Description

technical field [0001] The invention relates to a nickel-cadmium battery electrode and a method for preparing the battery, in particular to an electroplating solution for a nickel-cadmium battery negative electrode and a method for manufacturing the battery negative electrode. Background technique [0002] Nickel-cadmium batteries use foamed nickel as the positive electrode and electrodeposited cadmium as the negative electrode. This battery has the characteristics of high capacity and high rate discharge, but its production conditions are harsh, especially the production conditions of the negative plate are affected by many factors. Some other properties of the battery have not been developed. This kind of negative electrode preparation is based on cadmium sulfate or cadmium chloride as the main salt, and nickel sulfate as the conductive salt. It is electroplated under the condition of 19-27°C in an acidic plating solution, and after some post-treatment, the electrodepositio...

Claims

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Application Information

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IPC IPC(8): C25D3/26H01M4/29
CPCY02E60/124Y02E60/10
Inventor 张学全
Owner BYD CO LTD
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