不同厂家热电池FeS2-CoS2复合正极材料的比较研究
Comparative Study on the FeS2-CoS2 Composite Positive Electrode Material for Thermal Battery from Different Manufacturers
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摘要:为了加快热电池FeS2-CoS2复合正极材料的优化及应用，采用两种不同厂家生产的CoS2作为导电剂添加到FeS2中，制备出FeS2-CoS2复合正极材料及其单体电池，并对两种CoS2原材料、FeS2-CoS2复合正极材料的微观形貌、粒度分布、X射线衍射分析以及单体电池的放电性能进行了研究。结果表明，广东产的FeS2-CoS2正极材料具有更均匀的微观分布和较少的小粒度粒子，湖南产的FeS2-CoS2正极材料更适合小电流放电应用，而广东产的FeS2-CoS2正极材料更适合于高功率放电。此外，将两种FeS2-CoS2正极材料应用于某型号热电池并进行高低温放电测试，结果表明广东产的FeS2-CoS2正极材料在放电性能上优于湖南产的FeS2-CoS2正极材料。
Abstract:In order to improve the optimization and application of FeS2-CoS2 composite positive electrode material for thermal battery, two types of FeS2-CoS2 composite positive electrode material were prepared by adding conductive agents of CoS2 produced by different manufacturers into FeS2, and the single cell batteries with two FeS2-CoS2 composite positive electrode materials were manufactured. The microstructure, particle size distribution, X-ray diffraction analysis for two CoS2 raw materials and FeS2-CoS2 composite positive electrode materials, and discharge testing of the single cell batteries were conducted. It is found that the FeS2-CoS2 composite positive electrode material from Guangdong has a more uniform microstructure and fewer small particles, the FeS2-CoS2 positive electrode material produced in Hunan is more suitable for low current discharge applications, while the FeS2-CoS2 positive electrode material produced in Guangdong is more suitable for high power discharge. In addition, the two FeS2-CoS2 positive electrode materials were applied to a certain type of thermal battery and tested at high and low temperature. The results show that the FeS2-CoS2 positive electrode material from Guangdong has better discharge performance than the FeS2-CoS2 material from Hunan.
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