热电池Fe-Co-S型复合正极材料制备及电化学性能研究  

Preparation and electrochemical properties of Fe-Co-S composite cathode materials for thermal batteries

作　　者：王京亮 姚利 王开琼 吴启兵 李云伟 WANG Jingliang;YAO Li;WANG Kaiqiong;WU Qibing;LI Yunwei(State Key Laboratory of Advanced Chemical Power Sources,Guizhou Meiling Power Sources Co.,Ltd.,Zunyi Guizhou 563003,China)

机构地区：[1]贵州梅岭电源有限公司,特种化学电源国家重点实验室,贵州遵义563003

出　　处：《电源技术》2023年第6期764-767,共4页Chinese Journal of Power Sources

摘　　要：采用物理混合法和高温固相法分别制备了Fe-Co-S型复合正极材料,对复合正极材料的物相组成、微观形貌及热稳定性等进行表征。对不同方法制备的热电池正极材料进行电化学性能测试,结果表明高温固相法制备的复合正极材料峰值电压和大电流放电下的脉冲性能更优。研究了Fe与Co的不同比例对Fe-Co-S型复合材料放电性能的影响,确定Fe与Co的最佳质量比为5∶5。研究了不同比例碳纳米管包覆对Fe_(0.5)Co_(0.5)S_(2)复合正极材料性能的影响,结果表明碳纳米管最佳添加量为1.5%(质量分数)。Fe-Co-S composite cathode materials were prepared by physical mixing method and high temperature solidphase method,respectively.The phase composition,micro-morphology and thermal stability of composite cathode materials were characterized.The electrochemical performance of the cathode materials prepared by different methods shows that the composite cathode materials prepared by high temperature solid-phase method have better peak voltage and pulse performance under high current discharge.The influence of different ratios of Fe to Co on the discharge performance of Fe-Co-S composites was studied.The optimum ratio of Fe to Co is 5∶5.The effect of carbon nanotube coating with different ratios on the properties of Fe_(0.5)Co_(0.5)S_(2)composite cathode materials was studied.The results show that the optimum content of carbon nanotube is 1.5%.

关 键 词：Fe-Co-S复合正极 热电池 电化学性能 

分 类 号：TM911[电气工程—电力电子与电力传动]