A composite positive electrode material for thermal battery and preparation method thereof
A composite positive electrode material and a technology of positive electrode materials, which are applied in the field of composite positive electrode materials for thermal batteries and their preparation, can solve the problem of difficult reconciliation of capacity and conductivity of positive electrode materials for thermal batteries, cumbersome preparation methods of composite positive electrode materials, and differences in chemical composition of batch products High performance and other problems, to achieve excellent high-power discharge capacity, improve actual utilization, and low production costs
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Embodiment 1
[0025] The weight ratio of each component of the target product thermal battery composite positive electrode material is: FeS 2 55%, CoS 2 Accounted for 35%, lithium oxide accounted for 5%, ultrafine conductive powder accounted for 5%, of which molybdenum powder accounted for 35% of the mass ratio of ultrafine conductive powder. First put the four raw materials into the powder mixer, mix until the system is uniform, and obtain the precursor of the target product. Transfer the precursor into a quartz bowl, put it into a tube furnace, raise the temperature to 150°C, pass in high-temperature water-argon mixed steam for calcination for 2 hours, in which water vapor accounts for 5% of the volume of the mixed steam, take out the quartz bowl, and let it cool naturally , after pulverization or ball milling, and vacuum drying, the desired product can be obtained. The volume resistance of the product was measured to be 0.00067 Ω·cm, and the actual capacity of the thermal battery prepa...
Embodiment 2
[0027] The weight ratio of each component of the target product thermal battery composite positive electrode material is: FeS 2 25%, CoS 2 Accounted for 65%, lithium oxide accounted for 1%, ultra-fine conductive powder accounted for 9%, of which molybdenum powder accounted for 65% of the mass ratio of ultra-fine conductive powder. First put the four raw materials into the powder mixer, mix until the system is uniform, and obtain the precursor of the target product. Transfer the precursor into a quartz bowl, put it into a tube furnace, raise the temperature to 160°C, pass in high-temperature water-argon mixed steam for calcination for 2 hours, in which water vapor accounts for 10% of the volume of the mixed steam, take out the quartz bowl, and let it cool naturally , after pulverization or ball milling, and vacuum drying, the desired product can be obtained. The volume resistance of the product was measured to be 0.00017 Ω·cm, and the actual capacity of the thermal battery pr...
Embodiment 3
[0029] The weight ratio of each component of the target product thermal battery composite positive electrode material is: FeS 2 40%, CoS 2 Accounted for 45%, lithium oxide accounted for 5%, ultra-fine conductive powder accounted for 10%, of which molybdenum powder accounts for 65% of the mass ratio of ultra-fine conductive powder. First put the four raw materials into the powder mixer, mix until the system is uniform, and obtain the precursor of the target product. Transfer the precursor into a quartz bowl, put it into a tube furnace, raise the temperature to 180°C, pass high-temperature water-argon mixed steam for calcination for 1 hour, in which water vapor accounts for 30% of the volume of the mixed steam, take out the quartz bowl, and let it cool naturally , after pulverization or ball milling, and vacuum drying, the desired product can be obtained. The volume resistance of the product was determined to be 0.00025 Ω·cm, and the actual capacity of the thermal battery prep...
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