Unlock instant, AI-driven research and patent intelligence for your innovation.

Zinc alloy powder for alkaline battery and preparation method thereof

An alkaline battery and powder preparation technology, which is applied in the field of metal alloys, can solve the problem that the hydrogen volume cannot be reduced at the same time, and achieve the effect of small hydrogen volume

Inactive Publication Date: 2014-05-21
吴雅萍
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current technology reduces the volume of hydrogen gas produced before battery discharge by adding additives, but the problem is that it cannot reduce the volume of hydrogen gas produced before and after battery discharge at the same time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation method of the zinc alloy powder is:

[0018] Ingredients, the composition by weight percentage is: 0.0003-0.0005% indium, 0.1-0.2% magnesium, 0.03-0.15% calcium, 0.01-0.015% iron, 0.0002-0.0005% strontium, 0.05-0.35% aluminum, 0.08-0.1% bismuth, the balance is zinc and unavoidable impurities mixed, and the molten zinc alloy is obtained by blowing in nitrogen, and the zinc alloy is sprayed into the air, and powdered by gas powdering method;

[0019] Then, the zinc alloy powder obtained above is heat treated in a heat treatment furnace under a nitrogen atmosphere at a temperature of 350°C for 25 minutes, and then cooled to room temperature at a uniform speed in a nitrogen atmosphere at a cooling rate of 5-15°C / sec.

Embodiment 1

[0021] A zinc alloy powder for alkaline batteries, the composition of which is 0.0005% of indium, 0.2% of magnesium, 0.15% of calcium, 0.015% of iron, 0.0005% of strontium, 0.35% of aluminum, and 0.1% of bismuth. , The balance is zinc and inevitable impurities.

Embodiment 2

[0023] A zinc alloy powder for alkaline batteries, the composition of which is 0.00035% of indium, 0.1% of magnesium, 0.03% of calcium, 0.01% of iron, 0.00035% of strontium, 0.05% of aluminum, and 0.08% of bismuth. , The balance is zinc and inevitable impurities.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to zinc alloy powder for an alkaline battery and a preparation method thereof. The zinc alloy powder contains the following ingredients in percentage by weight: 0.0003-0.0005% of indium, 0.1-0.2% of magnesium, 0.03-0.15% calcium, 0.01-0.015% of iron, 0.0002-0.0005% of strontium, 0.05-0.35% of aluminum, 0.08-0.1% of bismuth and the balance of zinc and unavoidable impurities. When the zinc alloy powder disclosed by the invention is used as a negative active material, the volume of hydrogen gas generated before the discharge of the battery is very small, and the volume of hydrogen gas generated after the discharge of the battery is also very small.

Description

Technical field [0001] The invention belongs to the field of metal alloys, and particularly refers to a zinc alloy powder for alkaline batteries and a preparation method. Background technique [0002] The active material currently used for the negative electrode of the battery is mainly zinc powder. However, if zinc alone is used as the active material of the negative electrode of the battery, there is a problem that a large amount of hydrogen is generated during the battery use, and electrolyte leakage occurs. [0003] In order to solve the above-mentioned problems, for a long time, zinc, which is the active material of the negative electrode of the battery, has been amalgamated with mercury. However, when the waste battery is discarded, the mercury in it will cause environmental pollution problems. [0004] The prior art proposes the use of mercury-free zinc powder, and the use of zinc alloy powder obtained by alloying zinc with other elements, such as bismuth, aluminum, indium, ga...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01M4/38B22F1/00C22C18/00C22C18/04
CPCH01M4/46B22F1/00B22F9/08C22C18/00C22C18/04H01M4/381H01M6/06
Inventor 吴雅萍
Owner 吴雅萍