Positive material for magnesium cell, preparation method of positive material and magnesium cell

A positive electrode material, magnesium battery technology, applied in battery electrodes, dry batteries, circuits, etc., can solve problems such as environmental pollution and high production costs, and achieve the effects of alleviating resource shortage, high voltage, and cost reduction

Inactive Publication Date: 2013-08-07
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing magnesium primary batteries are made of MnO 2 As positive electrode, but using MnO 2 As the positive electrode of a magnesium primary battery, not only will the production cost of this magnesium battery be higher, but it will also cause certain pollution to the environment.

Method used

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  • Positive material for magnesium cell, preparation method of positive material and magnesium cell
  • Positive material for magnesium cell, preparation method of positive material and magnesium cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: Weigh 9.0075g of ferric oxide, 0.5004g of acetylene black, and 0.5021g of graphite, and put them into a corundum ball mill jar with a ball-to-material ratio of 5:1, use 30ml of absolute ethanol as a dispersant, and The ball mill was intermittently milled at a speed of 400r / min for 4 hours, and then the slurry mixture after ball milling was dried in an oven at 60°C to obtain the precursor of the positive electrode material for magnesium batteries, and then the precursor of the positive electrode material for the magnesium battery was dried at a speed of 300-500r on the ball mill. Grinding at a speed of 1 / min to obtain a cathode material for a magnesium battery.

[0034] Weigh 0.1507g of the aforementioned magnesium battery positive electrode material on an electronic balance and attach it to the stainless steel current collector as the positive electrode of the magnesium battery, configure 1mol / L sodium nitrate as the electrolyte, pure magnesium as the negat...

Embodiment 2

[0035] Embodiment 2: Take by weighing 9.0025g of ferric oxide, 0.5064g of acetylene black, and 0.5023g of graphite, and put them into a corundum ball mill jar at a ratio of 5:1 with the ball-to-material ratio, and use 30ml of absolute ethanol as a dispersant. The ball mill was intermittently ball milled at a speed of 400r / min for 4 hours, and then the slurry mixture after ball milling was dried in an oven at 40°C to obtain the precursor of the positive electrode material for magnesium batteries, and then the precursor of the positive electrode material for the magnesium battery was dried at a speed of 300-500r on the ball mill. Grinding at a speed of 1 / min to obtain a cathode material for a magnesium battery.

[0036] Weigh 0.1521g of the aforementioned magnesium battery positive electrode material on an electronic balance and attach it to the stainless steel current collector as the positive electrode of the magnesium battery. Configure 1mol / L magnesium acetate as the electrol...

Embodiment 3

[0037] Embodiment 3: Weigh 8.5065g of ferric oxide, 0.5014g of acetylene black, 0.5003g of graphite, and 0.5021g of manganese dioxide, put them into a corundum ball mill jar with a ball-to-material ratio of 5:1, and use 30ml of absolute ethanol As a dispersant, on a planetary ball mill, intermittent ball milling at a speed of 400r / min for 4h, then dry the slurry mixture after the ball milling in an oven at 60°C to obtain the precursor of the positive electrode material for magnesium batteries, and then Grinding on a ball mill at a speed of 300-500r / min to obtain a cathode material for a magnesium battery.

[0038] Weigh 0.1221g of the aforementioned magnesium battery positive electrode material on an electronic balance and attach it to the stainless steel current collector as the positive electrode of the magnesium battery. Configure 1mol / L magnesium acetate as the electrolyte, pure magnesium as the negative electrode and current collector, and add an alkaline diaphragm in the ...

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PUM

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Abstract

The invention relates to a positive material for a magnesium cell, a preparation method of the positive material, and a magnesium cell. The positive material for the magnesium cell comprises ferric oxide and a carbon source with a mass fraction ratio of (80:20) to (95:5). The preparation method comprises preparing materials according to the ratio, and mixing uniformly; adding the mixed material into a corundum agate jar with a ball-to-material ratio of 5:1; adding absolute ethanol as a dispersing agent; carrying out ball milling by a planetary ball mill at a speed of 300 to 500 rotations per minute for 4 to 6 hours to obtain a slurry mixture; drying the slurry mixture; and grinding the mixture into fine powder by the ball mill at a speed of 300 to 500 rotations per minute. The positive material is made into a positive electrode of the magnesium cell; a pure magnesium or magnesium alloy material is made into a negative electrode; and an electrolyte contains one or more of magnesium perchlorate, nitrates or acetates. The positive material has the advantages of abundant sources, no pollution to the environment, and low cost; and the prepared magnesium cell not only is low in cost and environment-friendly, but also has stable discharge and high specific discharge capacity.

Description

[0001] technical field [0002] The invention relates to the technical field of batteries, in particular to a magnesium primary battery, in particular to a magnesium primary battery with ferric oxide as a positive electrode material. [0003] Background technique [0004] Dry batteries were born in the middle of the 19th century. In 1860, George Leclanche of France invented the carbon-zinc battery. For the first time, he replaced the wet water-based electrolyte with a viscous paste-like electrolyte. "Dry" batteries in containers. With the development of science and technology, dry batteries have developed into a large family, and there are about 100 kinds of them so far. Common zinc-manganese dry batteries, alkaline zinc-manganese dry batteries, magnesium-manganese dry batteries, zinc-air batteries, zinc-mercuric oxide batteries, zinc-silver oxide batteries, lithium-manganese batteries, etc. The most commonly used of these batteries are zinc-manganese dry batteries, the ele...

Claims

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Application Information

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IPC IPC(8): H01M4/52H01M6/06
CPCY02E60/12
Inventor 朱伟杨亚萍王西镇王章淦姚靖汪佐龙牛风光彭建潘复生
Owner CHONGQING UNIV
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