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Thermal battery based on tungsten-molybdenum sulfide system

A sulfide, thermal battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of limited theoretical capacity, poor safety performance, and low decomposition temperature of positive electrode materials.

Active Publication Date: 2020-05-08
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to overcome the deficiencies of the prior art, and solve the technology that restricts the development of thermal batteries such as the limited theoretical capacity of positive electrode materials, low decomposition temperature, low utilization rate of electrode materials, and poor safety performance in the current iron-cobalt-nickel sulfide thermal battery system problem, providing a thermal battery based on tungsten-molybdenum sulfide system

Method used

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  • Thermal battery based on tungsten-molybdenum sulfide system

Examples

Experimental program
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Effect test

Embodiment 2

[0077] Embodiment 2—using molybdenum disulfide as tungsten molybdenum sulfide

[0078] (1) High temperature roasting

[0079] Place molybdenum disulfide in a quartz tube furnace, pass through argon protective gas, heat it up to 850°C at a heating rate of 10°C / min, roast for 4 hours, cool to 60°C with the furnace, and pass through a 100-mesh sieve.

[0080] (2) Vacuum-atmosphere replacement roasting

[0081] Put the molybdenum disulfide after high-temperature roasting in step (1) into a vacuum roasting furnace, keep the pressure in the furnace at a vacuum of 0.015 MPa, raise the temperature to 600 °C at a heating rate of 10 °C / min, and roast for 1 hour. Slowly feed the equilibrium transfer gas to 0.1Mpa, after calcination for 0.5h, vacuumize and repeat the atmosphere replacement 5 times, and cool down with the furnace in a vacuum state to obtain a molybdenum disulfide sample. The equilibrium transfer gas is a mixed gas of water vapor and argon. The volume percentage of water ...

Embodiment 3

[0090] Embodiment 3—Using tungsten disulfide and molybdenum disulfide as tungsten molybdenum sulfide

[0091] (1) High temperature roasting

[0092] Place molybdenum disulfide and tungsten disulfide in a quartz tube furnace, pass through argon protective gas, raise the temperature to 850 °C at a heating rate of 10 °C / min, roast for 4 hours, cool to 60 °C with the furnace, and pass through 100 mesh sieve.

[0093] (2) Vacuum-atmosphere replacement roasting

[0094] Put the molybdenum disulfide and tungsten disulfide after high-temperature roasting in step (1) into a vacuum roasting furnace, keep the pressure in the furnace at a vacuum of 0.015 MPa, and raise the temperature to 600 °C at a heating rate of 10 °C / min. After roasting for 1 hour, slowly feed the equilibrium transfer gas to 0.1Mpa. After roasting for 0.5 hours, repeat the atmosphere replacement for 5 times by vacuuming, and cool down with the furnace in a vacuum state to obtain a molybdenum disulfide sample. The eq...

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Abstract

The invention discloses a thermal battery based on a tungsten-molybdenum sulfide system. The thermal battery comprises a battery monomer consisting of a positive electrode material, an alkali metal halide diaphragm, an asbestos ring, a negative electrode material and a collector plate, and a heating plate in contact with the battery monomer, and an electrochemical system is established by taking atungsten-molybdenum sulfide-based system as the positive electrode material and lithium and lithium alloy as the negative electrode material and the system promots alkali metal salt to melt by virtueof a self-heating system. The internal temperature of the thermal battery is 200-1200 DEG C, the monomer voltage is 1.0-1.5 V, the system output is stable, the electrode utilization rate is high, theavailable capacity is large, the working time is long, the safety performance is high, and the environmental thermal adaptability is good.

Description

technical field [0001] The invention belongs to the technical field of chemical power thermal batteries, and more specifically relates to a tungsten (molybdenum) sulfide system thermal battery. Background technique [0002] Thermal battery is a high-temperature molten salt battery, which is an electrochemical system established by heating solid electrolyte to molten ionic conductor by its own heating system. Thermal battery has the characteristics of large output power, long storage life, and short activation time. Ideal power supply for defense equipment. As a military power supply, in addition to requiring the battery to have good electrochemical performance, it also places extremely high requirements on quality and reliability. Since the thermal battery is a molten salt battery, the electrode material must have a high decomposition temperature in addition to sufficient capacity and good conductivity to ensure good electrochemical performance and safe, stable and reliable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/36H01M4/58
CPCH01M6/36H01M4/5815Y02E60/10
Inventor 胡文彬田千秋郭灏韩晓鹏
Owner TIANJIN UNIV
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