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Hydrogel electrolyte for magnesium-air battery and preparation method thereof as well as magnesium-air battery

An air battery and electrolyte technology, applied in the direction of non-aqueous electrolyte battery, electrolyte battery manufacturing, secondary battery, etc., can solve the problems of corrosion, environmental pollution of aqueous solution, etc. Effect

Active Publication Date: 2017-11-24
CHANGSHA XUNYANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems in the prior art, the object of the present invention is to provide a hydrogel electrolyte for a magnesium-air battery and a preparation method thereof and a magnesium-air battery. Continuously add aqueous solution to the magnesium-air battery, the battery cavity must be completely sealed and the leakage of the aqueous solution will cause pollution or corrosion of the surrounding environment

Method used

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  • Hydrogel electrolyte for magnesium-air battery and preparation method thereof as well as magnesium-air battery

Examples

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Effect test

Embodiment 1

[0034] A magnesium alloy-air battery, the electrolyte of which is a hydrogel electrolyte for a magnesium-air battery. The hydrogel electrolyte for a magnesium-air battery uses a blend of polyacrylamide and acrylic acid-acrylamide as a high water-absorbing polymer material. The specific preparation steps of the battery hydrogel electrolyte are as follows:

[0035] S1: The weight of the hydrogel electrolyte set for the magnesium-air battery is 100kg, and the weight of the superabsorbent polymer material polyacrylamide and acrylic acid-acrylic acid amide is weighed according to the ratio of 5% of the weight of the hydrogel electrolyte set for the magnesium-air battery. Blend (the mass ratio of polyacrylamide and acrylic acid-acrylamide is 1:1), the blend of polyacrylamide and acrylic acid-acrylamide is ground into a powder with a particle size of 75 μm~250 μm;

[0036] S2: Wrap the weighed polyacrylamide and acrylic acid-acrylamide blend with dust-free paper, and the mass ratio o...

Embodiment 2

[0041] A magnesium alloy-air battery, the electrolyte of which is a hydrogel electrolyte for a magnesium-air battery. The hydrogel electrolyte for a magnesium-air battery uses polyacrylamide as a high water-absorbing polymer material. The specific preparation steps of the hydrogel electrolyte for a magnesium-air battery are as follows :

[0042] S1: Magnesium alloy air battery sets the weight of the hydrogel electrolyte to 100kg, weighs polyacrylamide, a high water absorption polymer material, according to the proportion of 10% of the weight of the hydrogel electrolyte set by the magnesium air battery, and grinds the polyacrylamide Form into a powder with a particle size of 100μm~150μm;

[0043] S2: Wrap the weighed polyacrylamide with dust-free paper, and the mass ratio of dust-free paper to polyacrylamide is 1:1;

[0044] S3: Place the coated polyacrylamide in a mold made of plexiglass according to the dimensions of the hydrogel electrolyte set by the magnesium alloy air ba...

Embodiment 3

[0048] A magnesium alloy-air battery, the electrolyte of which is a hydrogel electrolyte for a magnesium-air battery. The hydrogel electrolyte for a magnesium-air battery uses polyacrylamide as a high water-absorbing polymer material. The specific preparation steps of the hydrogel electrolyte for a magnesium-air battery are as follows :

[0049] S1: Magnesium alloy air battery sets the weight of the hydrogel electrolyte to 100kg, weighs polyacrylamide, a high water absorption polymer material, according to the proportion of 10% of the weight of the hydrogel electrolyte set by the magnesium air battery, and grinds the polyacrylamide Form into a powder with a particle size of 100μm~150μm;

[0050] S2: Wrap the weighed polyacrylamide with dust-free paper, and the mass ratio of dust-free paper to polyacrylamide is 1:1;

[0051] S3: Place the coated polyacrylamide in a mold made of plexiglass according to the dimensions of the hydrogel electrolyte set by the magnesium alloy-air ba...

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Abstract

The invention provides hydrogel electrolyte for a magnesium-air battery. The hydrogel electrolyte is characterized in that the hydrogel electrolyte is a gel-like substance formed by absorbing a water solution with the pH (Potential of Hydrogen) value to of 6 to 8 through a high-water-absorbency high molecular material, wherein the high-water-absorbency high molecular material is one or more of high-water-absorbency resin, high-water-absorbency cellulose and high-water-absorbency starch. The invention further provides a preparation method of the hydrogel electrolyte for the magnesium-air battery and the magnesium-air battery. The magnesium-air battery provided by the invention takes the hydrogel electrolyte as electrolyte and a large quantity of water is kept in the gel-like electrolyte; in a discharging process of the battery, the sufficient water participates in electrode reaction and discharging requirements are met; the hydrogel electrolyte can meet discharging requirements; the hydrogel electrolyte does not contain a liquid-state water solution and does not need to be strictly sealed as liquid-state electrolyte; the production cost of the hydrogel electrolyte is low so that the hydrogel electrolyte is suitable for large-batch production; the influences on a battery structure are small so that the battery is more convenient to pack, carry and utilize and has a wider applicable range is realized.

Description

technical field [0001] The invention relates to the technical field of application of new energy materials, in particular to a hydrogel electrolyte for a magnesium-air battery, a preparation method thereof, and a magnesium-air battery. Background technique [0002] In recent years, battery development and application technology has gradually become one of the most competitive technologies. While improving the performance of mainstream lithium batteries, other types of new batteries are also being actively researched and developed. In recent years, magnesium-air batteries have gradually entered people's field of vision due to their excellent performance. Magnesium-air battery is an air battery using metal magnesium or magnesium alloy as the negative electrode. It has been widely used and has been reported at home and abroad. Among them, Fujikura Rubber Company of Japan has developed an emergency magnesium (Mg) air battery "WattSatt". It can start generating electricity wi...

Claims

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Application Information

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IPC IPC(8): H01M10/0565H01M10/058
CPCH01M10/0565H01M10/058Y02E60/10Y02P70/50
Inventor 余鹏
Owner CHANGSHA XUNYANG NEW MATERIAL TECH CO LTD
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