A kind of ternary cathode material for NCF type thermal battery and preparation method thereof

A cathode material and thermal battery technology, applied in the field of material chemistry, can solve the problems of no obvious improvement in performance and reports have not yet appeared, and achieve the effects of single component, improved cathode utilization rate, and improved performance
CN112614996BActive Publication Date: 2022-04-12SHANGHAI INST OF SPACE POWER SOURCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI INST OF SPACE POWER SOURCES
Publication Date
2022-04-12

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Abstract

The invention relates to a ternary cathode material for an NCF thermal battery and a preparation method thereof, belonging to the technical field of material chemistry. The object of the present invention is to provide a kind of NCF type thermal battery ternary positive electrode material and preparation method thereof, prepare M(C 2 o 4 )·nH 2 O(M:Ni, Co, Fe) solid solution precursor, and then through the high-pressure hydrogen reduction-sulfur steam vulcanization method, the cubic phase Ni can be obtained 0.1 co 0.45 Fe 0.45 S 2 Ternary cathode materials for thermal batteries. By adopting the preparation method provided by the invention, the obtained ternary cathode material has the characteristics of complete crystal structure, low self-loss rate, high capacity utilization rate and the like.
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Description

technical field

[0001] The invention relates to a ternary cathode material for an NCF thermal battery and a preparation method thereof, belonging to the technical field of material chemistry. Background technique

[0002] MS 2 (M=Fe, Co) is currently the most widely used cathode material for thermal batteries, among which FeS 2 The electrode potential of the Li negative electrode is 2.2V, the theoretical capacity is 1206As / g, and the thermal decomposition temperature is 550°C, while CoS 2 The electrode potential is 2.1V, the theoretical capacity is 1045As / g, and the thermal decomposition temperature is 650°C. The difference in the performance of the two cathode materials leads to slightly different application directions. With the continuous development of the thermal battery technology on the bomb, the working time of the thermal battery is continuously extended. The disadvantage of low utilization of traditional cathode materials makes it difficult to meet the use requir...

Claims

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