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Ternary composite electrode material for thermal batteries and preparation method thereof

A ternary composite, electrode material technology, used in battery electrodes, secondary batteries, circuits, etc., can solve problems such as poor air stability and small discharge specific capacity, and achieve improved discharge polarization, high discharge specific capacity, and air stability. good effect

Inactive Publication Date: 2017-03-22
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

[0004] Aiming at the defects of small discharge specific capacity and poor air stability existing in the existing thermal battery electrode materials, the present invention provides a ternary composite thermal battery electrode material and a preparation method thereof; the present invention optimizes and adjusts the preparation process steps of the electrode materials and reaction conditions, prepared an electrode material with a ternary composite structure loaded with sulfide on a carbon-based carrier and coated with a carbon layer; this electrode material has the advantages of high discharge specific capacity and good air stability, which is beneficial to Commercial Promotion and Application of Thermal Batteries

Method used

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  • Ternary composite electrode material for thermal batteries and preparation method thereof
  • Ternary composite electrode material for thermal batteries and preparation method thereof
  • Ternary composite electrode material for thermal batteries and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Weigh 1g of cetyltrimethylammonium bromide, disperse in 100ml of deionized water, stir to disperse and dissolve to form solution A; weigh 0.3g of carbon spheres, disperse in solution A, stir evenly to form slurry B Weigh 1g of glucose, 10g of sodium thiosulfate, and 5g of cobalt acetate into slurry B in turn, and stir until slurry C is formed;

[0042] 2. Transfer the obtained slurry C into a reaction kettle, heat to 200°C, react at a constant temperature for 24 hours, and separate the solid product D after cooling;

[0043] 3. Put the solid product D into an oven, raise the temperature to 90°C, and dry at a constant temperature for 16 hours to obtain the product E;

[0044] 4. Put the product E in a tube furnace, raise the temperature to 450°C under an argon atmosphere, keep the temperature constant for 4 hours, and collect the final product after cooling, which is a cobalt disulfide ternary composite thermal battery electrode with a carbon content of 20wt.%. Mater...

Embodiment 2

[0048] 1. Weigh 0.02g of sodium dodecylsulfonate, disperse it in 100ml of distilled water, and stir until solution A is formed; weigh 0.005g of graphene, disperse it in solution A, and stir evenly to form slurry B; weigh 0.05g 1g of glucose, 1g of thiourea, and 0.5g of ferric chloride are added to slurry B in turn, and stirred until slurry C is formed;

[0049] 2. Transfer the obtained slurry C into a reaction kettle, heat to 150°C, react at a constant temperature for 48 hours, and separate to obtain a solid product D after cooling;

[0050] 3. Put the solid product D into an oven, raise the temperature to 80°C, and dry at a constant temperature for 12 hours to obtain the product E;

[0051] 4. Put the product E in a tube furnace, raise the temperature to 300°C under an argon atmosphere, keep the temperature for 6 hours, and collect the final product after cooling, which is an iron disulfide ternary composite thermal battery with a carbon content of 5 wt.%. electrode material...

Embodiment 3

[0054] 1. Weigh 0.2g of sodium dodecylbenzenesulfonate, disperse it in 100ml of water, and stir until solution A is formed; weigh 0.02g of carbon nanotubes, disperse it in solution A, and stir evenly to form slurry B; Add 0.2g sucrose, 2g sodium thiosulfate, and 1g nickel nitrate to slurry B in sequence, and stir until slurry C is formed;

[0055] 2. Transfer the obtained slurry C into a reaction kettle, heat to 180°C, react at a constant temperature for 30 hours, and separate the solid product D after cooling;

[0056] 3. Put the solid product D into an oven, raise the temperature to 120°C, and dry at a constant temperature for 3 hours to obtain the product E;

[0057] 4. Put the product E in a tube furnace, raise the temperature to 500°C under an argon atmosphere, keep the temperature constant for 2 hours, and collect the final product after cooling, which is a nickel disulfide ternary composite thermal battery with a carbon content of 10 wt.%. electrode material.

[0058]...

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Abstract

The invention discloses a preparation method of a ternary composite electrode material for thermal batteries. By optimizing and adjusting the preparation process steps and reaction conditions of the electrode material, a sulfide material is firstly uniformly dispersed and loaded on a carbon-based carrier, so that the sulfide electrode material is dispersed, the electrical conductivity of the electrode material is improved, and the polarization of battery discharge is improved; and then a carbon layer with resistance to oxidation is formed through surface coating, so that the electrode material of a carbon-based carrier, sulfide and carbon layer ternary composite structure is formed. The electrode material has the advantages of high discharge specific capacity and high air stability; and the preparation method disclosed by the invention is simple and reliable in technology, and is applicable to large-scale and commercialized production of the ternary composite electrode material.

Description

technical field [0001] The invention relates to the field of thermal battery electrode materials, in particular to a ternary composite thermal battery electrode material and a preparation method thereof. Background technique [0002] A thermal battery is a high-temperature primary battery that uses solid molten salt as an electrolyte and heats the electrolyte to a molten state during operation to activate and discharge the battery. Because its electrolyte is non-conductive at room temperature, the battery has almost no self-discharge, so its reliability is strong, and its effective storage time is more than 25 years. In addition, thermal batteries also have high specific capacity and high specific power output capability. These characteristics make it widely used in missiles, artillery shells, torpedoes and other weapon systems, as well as mineral mining, space exploration and other fields. [0003] With the development of modern technology, thermal batteries are expected ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/39H01M10/38H01M4/36
CPCH01M4/362H01M10/38H01M10/39Y02E60/10Y02P70/50
Inventor 谢松刘昊梅军
Owner CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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