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Method for processing cobalt coated nickel hydroxide

A treatment method and technology of nickel hydroxide, applied in structural parts, circuits, electrodes of alkaline batteries, etc., can solve problems such as poor treatment effect and particle adhesion, and achieve the prevention of particle agglomeration, the uniform composition of the mixture, The effect of improving stability

Inactive Publication Date: 2004-06-02
BYD CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0017] But even if the above method is adopted, because the nickel hydroxide particles are extremely small, after the alkali is mixed, some particles will inevitably stick together when they flow or disperse in the heated air, so that the treatment effect will not be too great. it is good

Method used

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  • Method for processing cobalt coated nickel hydroxide
  • Method for processing cobalt coated nickel hydroxide
  • Method for processing cobalt coated nickel hydroxide

Examples

Experimental program
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Embodiment 1

[0034] Get commercially available nickel hydroxide particles coated with cobalt hydroxide with a cobalt content of 5% on the surface, numbered h, put it into a conical container from the feeding port of the conical propeller mixer, and control the loading so that the loaded The upper surface of the incoming granular material is under the nozzle, close the feeding port, and rotate the rocker arm and propeller, while spraying the alkaline aqueous solution from the nozzle. The sprayed caustic alkali solution adheres to the surface of the granular matter stirred by the propeller and penetrates the cobalt hydroxide on the particle surface. After the caustic alkali aqueous solution is completely sprayed, continue stirring for 15 minutes, and then discharge the granular matter from the discharge port.

[0035] Load the mixed granular matter from the feeding port of the screw-feeding machine sieve, feed compressed gas with a pressure of 0.1Mpa through the air inlet, start the motor to ...

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Abstract

The invention relates to process for treating non-agglomeration type nickel electrode active compound for alkaline battery, wherein Co containing nickel hydroxide shot-like particles are mixed by stirring with LiOH containing caustic alkali solution, the assortment shot-like particle is then undergone 20-150 screen mesh separation, and thermal oxidation to accomplish the final compound. The process according to the invention can make the compound ingredient more homogeneous, prevent the creation of particles group because of the particle adhesion, and repress the cobalt compound stripping-off of the particle group disintegration.

Description

technical field [0001] The invention relates to a treatment method for non-sintered nickel electrode active materials used in alkaline accumulators. Background technique [0002] Nickel electrodes for alkaline storage batteries are mainly used as positive electrodes for secondary batteries such as cadmium-nickel, hydrogen storage alloy-nickel and zinc-nickel. With the increasing demand for power capacity of portable electronic instruments, the previous sintered nickel electrodes have been gradually replaced by foamed non-sintered nickel electrodes. [0003] Non-sintered electrodes have higher filling density of active materials and higher volume specific capacity, and can produce high-capacity electrodes; however, due to their own characteristics, the contact between the conductive matrix and active materials of non-sintered electrodes Poor, so a good conductive network cannot be formed between the active material and the conductive matrix. For example, in a foamed electro...

Claims

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Application Information

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IPC IPC(8): H01M4/04H01M4/26H01M4/32H01M4/52
CPCY02E60/124Y02E60/10
Inventor 李维周文会王传福
Owner BYD CO LTD
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