Composite electronic conductive agent for thermal battery positive electrode material

Abstract

The invention belongs to the field of a thermal battery, and particularly relates to a composite electronic conductive agent for a thermal battery positive electrode material. The constituents of thecomposite electronic conductive agent are as follows: 10-45% of iron powder, 10-45% of cobalt powder and 10-45% of nickel powder. Through performance test of the thermal battery, 1-4% of composite electronic conductive agent is added into a thermal battery sulfide positive electrode material containing Fe, Co and Ni, and the large current-resistant density bearing capability and the output capacity of the battery can be improved by 6% or above. For example, 1.5% of composite electronic conductive agent is added into the thermal battery composite Fe<0.5>Co<0.5>S2 positive electrode material, the large current-resistant density bearing capability and the output capacity of the battery can be respectively improved by 10% and 6%.

Description

technical field [0001] The invention belongs to the field of thermal batteries, and in particular relates to a composite electronic conductive agent for positive electrode materials of thermal batteries. Background technique [0002] The thermal battery is a heat-activated reserve battery. It uses molten salt as an electrolyte and uses a heat source to melt and activate a primary reserve battery. The internal temperature is about 550°C during operation. Due to its small internal resistance, high specific energy and specific power, wide operating environment temperature, long storage time, rapid and reliable activation, compact structure, non-directionality during use and not affected by installation orientation, good mechanical properties, No need for maintenance and other advantages, it has been favored by the military as soon as it came out, and has developed into an ideal power supply for modern weapons and emergency systems such as missiles, nuclear weapons, artillery, e...

AI Technical Summary

Problems solved by technology

Use a screen printing machine to evenly absorb the paste mixture onto the surface of the substrate, put the substrate covered with the active material into a vacuum drying oven and dry it in a vacuum to obtain a positive electrode of a thermal battery film, wherein the conductive agent in the positive electrode material is ultrafine metal powder or carbon Product materials have the advantages of high specific power, strong environmental adaptability, long storage time, fast activation speed, and no maintenance, etc., but the utilization rate and actual discharge capacity of the positive electrode material of the thermal battery are still low.

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