Cathode powder of cylindrical basic zinc-manganese battery and preparation method of cathode powder

A zinc-manganese battery, cylindrical technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems of insufficient high-current discharge performance, unsatisfactory long-term shooting, and insufficient positive electrode reaction area, etc., to achieve high current Discharge performance, reduced discharge density, and low raw material cost

Inactive Publication Date: 2012-01-04
浙江特源电池有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary alkaline zinc-manganese batteries have insufficient anode reaction area, high discharge density, fast cathode polarization, and high-current discharge performance are not good enough. Therefore, when used in high-current appliances such as digital cameras, the working time is still not long enough to meet the requirements. People's needs for long-term shooting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 The preparation method of cylindrical alkaline zinc-manganese battery positive electrode powder of the present invention

[0015] Weigh 40Kg of electrolytic manganese dioxide, 3Kg of graphite powder, and 0.1Kg of calcium stearate. Production steps: Mix in a mixer at room temperature for 5 minutes, add potassium hydroxide (40%wt) 2.5Kg, reagent ethanol 2Kg, wet mix for 5 minutes, then roll into sheets (discharge temperature 60-70°C), granulate, In the sieving process, positive electrode powder with a particle size of 20-80 meshes is obtained, which is stored for use.

[0016] Compared with the conventional production method, 1-5 parts of ethanol is added to the positive electrode component. During the powder making process, the ethanol volatilizes, and a pore structure is formed on the surface of the positive electrode powder particles, thereby forming porous particles, which is conducive to increasing the positive electrode reaction area. Reduce discharge ...

experiment example 1

[0017] Experimental example 1 The comparison experiment between the technology of the cylindrical alkaline zinc-manganese battery positive electrode powder of the present invention and the original technology

[0018] 10Ω continuous play to 0.9V 3.9Ω continuous play to 0.9V 1.8Ω Pulse to 0.9V 1000mA pulse to 0.9V 3.9Ω continuous amplifier to 0.8V New recipe process 19.15 hours 385.0 minutes 680.5 times 400 times 450.5 minutes Original recipe process 19.04 hours 368.1 minutes 611.3 times 353 times 393.5 minutes

[0019] The contrast experiment of the technique of the positive electrode additive of cylindrical alkaline zinc-manganese battery of the present invention and the original technique of table 1

[0020] Through the experiments in Table 1, it can be found that the new formula process of the present invention can improve the high-current discharge performance, and the discharge time and discharge times are significa...

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PUM

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Abstract

The invention provides cathode powder of a cylindrical basic zinc-manganese battery and a preparation method of the cathode powder. The cathode powder comprises the following component in part by weight: 80 to 90 parts of electrolytic manganese dioxide, 1 to 10 parts of graphite powder, 0.5 to 1 part of calcium stearate and 1 to 5 parts of ethanol. The cathode powder and the preparation method are low in raw material cost and have a simple preparation process; and by the preparation method, the surface state of cathode powder particles can be improved, porous particles are formed, and the conditions that the reaction area of a cathode is increased, discharge density is reduced, anodic polarization is relieved and the discharge performance of large current is improved are facilitated, so that the battery is particularly suitable for large-current electrical appliances such as a digital camera and the like.

Description

technical field [0001] The invention belongs to the field of fine chemical materials, in particular to a cylindrical alkaline zinc-manganese battery cathode powder and a preparation method thereof. Background technique [0002] The alkaline zinc-manganese battery is a primary battery with manganese dioxide as the positive electrode, zinc as the negative electrode, and potassium hydroxide solution as the electrolyte, referred to as alkaline manganese battery, commonly known as alkaline battery. Alkaline zinc-manganese batteries can be used for heavy load, large current discharge, and large capacity. Compared with ordinary dry batteries, they are more cost-effective. They are widely used in civil and industrial applications, especially for flash cameras, mini recorders, video cameras, walkie-talkies, shavers, and palm-type Color TVs and game consoles, toys, telemeters, alarms, calculators, hearing aids, flashlights and electric clocks and other instruments and equipment. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/50
CPCY02E60/10
Inventor 郑昔宝吴金星马君芳
Owner 浙江特源电池有限公司
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