Carbon coated thermal battery electrode material and preparation method thereof

An electrode material, thermal battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as poor air stability, difficult long-term storage, easy corrosion, etc., to improve electrical conductivity, good air stability, and reduce discharge electrodes. effect of chemical

Active Publication Date: 2016-08-17
CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the poor air stability existing in the existing cobalt disulfide electrode materials, easy to corrode, and difficult to store for a long time, and provide a carbon-coated thermal battery electrode material and a preparation method thereof; the electrode material of the present invention In the process of preparing cobalt disulfide by hydrothermal method, adding carbon source and calcining, the cobalt disulfide electrode material with carbon in-situ coating structure is prepared. The electrode material has good air stability and is durable Corrosion, high purity, high discharge capacity, and the preparation method of the electrode material is simple, reliable, environmentally friendly, safe, suitable for large-scale and commercial production

Method used

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  • Carbon coated thermal battery electrode material and preparation method thereof
  • Carbon coated thermal battery electrode material and preparation method thereof
  • Carbon coated thermal battery electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Weigh 0.5g cetyltrimethylammonium bromide and disperse it in 100ml water, stir until solution A is formed;

[0033] 2. Weigh 0.5g fructose, 4g sodium sulfide, and 2g cobalt acetate into solution A in sequence, and stir until solution B is formed;

[0034] 3. Transfer the obtained solution B into a reaction kettle, heat to 180°C, react at a constant temperature for 12 hours, and separate the product C after cooling;

[0035] 4. Put product C in an oven, heat up to 100°C, and dry at constant temperature for 6 hours to obtain product D;

[0036] 5. Put the product D into a tube furnace, raise the temperature to 500°C under an argon atmosphere, keep the temperature for 3 hours, and collect the final product E after cooling, that is, cobalt disulfide with a carbon-coated structure containing 15% carbon Electrode material ( figure 1 It is the transmission electron micrograph of the obtained carbon-coated cobalt disulfide, from figure 1 It can be seen that carbon is ef...

Embodiment 2

[0039] 1. Weigh 0.01g of sodium dodecylsulfonate and disperse it in 100ml of water, stir until solution A is formed;

[0040] 2. Weigh 0.05g of glucose, 1g of sodium thiosulfate, and 0.5g of cobalt nitrate into solution A in sequence, and stir until solution B is formed;

[0041] 3. Transfer the obtained solution B into a reaction kettle, heat to 100°C, react at a constant temperature for 48 hours, and separate the product C after cooling;

[0042] 4. Put product C in an oven, raise the temperature to 60°C, and dry at constant temperature for 24 hours to obtain product D;

[0043] 5. Put the product D into a tube furnace, raise the temperature to 300°C in a helium atmosphere, keep the temperature for 8 hours, and collect the final product after cooling, that is, a cobalt disulfide electrode with a carbon-coated structure containing 1% carbon Material;

[0044] 6. The obtained electrode material is assembled into battery sheets according to the method shown in Example 1, and ...

Embodiment 3

[0046] 1. Weigh 0.1g sodium dodecylbenzenesulfonate and disperse it in 100ml water, stir to form solution A;

[0047] 2. Weigh 0.2g of sucrose, 2g of sulfur powder, and 1g of cobalt sulfate into solution A in sequence, and stir until solution B is formed;

[0048] 3. Transfer the obtained solution B into a reaction kettle, heat to 150°C, react at a constant temperature for 15 hours, and separate to obtain product C after cooling;

[0049] 4. Put product C in an oven, heat up to 80°C, and dry at constant temperature for 15 hours to obtain product D;

[0050] 5. Put the product D into a tube furnace, raise the temperature to 400°C under a neon gas atmosphere, keep the temperature for 5 hours, and collect the final product E after cooling, that is, cobalt disulfide with a carbon-coated structure containing 5% carbon electrode material;

[0051] 6. The obtained electrode material was assembled into a battery sheet according to the method in Example 1, and the 2 discharge at a c...

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Abstract

The invention belongs to the field of thermal batteries, and relate to a carbon coated thermal battery electrode material and a preparation method thereof. Glucose and other carbon sources are added in the process of preparing cobalt disulfide through a hydrothermal method, and the cobalt disulfide electrode material with a carbon coated structure is prepared in situ; the mass content of carbon in the obtained material relative to cobalt disulfide ranges from 1% to 25%. The electrode material has the advantages of being high in specific capacity, good in air stability, simple in preparation process, easy to prepare in a large scale and the like.

Description

technical field [0001] The invention relates to a thermal battery electrode material, in particular to a thermal battery electrode material with a carbon coating structure and a preparation method thereof. Background technique [0002] Thermal battery, also known as high-temperature molten salt battery or heat-activated battery, is a high-temperature primary battery widely used in weapon systems such as missiles, shells, torpedoes, mineral mining, space exploration, and aircraft emergency systems. Different from conventional batteries, the electrolyte uses a solid molten salt that is non-conductive at room temperature. When in use, the electrolyte melts under the action of a heat source to activate the battery. In order to ensure that the electrolyte does not flow randomly and has good mechanical properties in the molten state, it is often necessary to add binders such as magnesium oxide or silicon dioxide. The above structure and characteristics of the thermal battery make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62
CPCH01M4/366H01M4/5815H01M4/625Y02E60/10
Inventor 谢松刘昊梅军刘焕明
Owner CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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