摘要
采用水热法和固相法合成的FeS_(2)、CoS_(2)和铁钴双金属二硫化物;通过溶胶凝胶法制备的钒酸铜高电位正极材料并对其进行掺杂改性以得到最优放电性能;通过高温升华法制备NiCl_(2)正极粉体并将正极材料进行涂覆以制备薄膜电极;采用高温烧结制备NiF2粉体正极并进行放电性能测试。通过XRD、SEM、粒度分布分析以及差热分析等手段对合成的材料进行表征。实验结果表明FeS_(2)、CoS_(2)等正极材料起始放电电压较低,钒酸铜及其改性材料具有高电压但性能不稳定,NiCl_(2)电极材料电子导电率较低,激活时间较长,NiF2材料相较于NiCl_(2)材料起始放电电压高放电平台长且激活时间短。
The FeS_(2),CoS_(2),and iron-cobalt bimetallic disulfides were synthesized by hydrothermal and solid-phase methods;Copper vanadate high-potential cathode materials were prepared by sol-gel method,and they were doped and modified to obtain optimal discharge performance;NiCl_(2)and NiF2 were processed at high temperature to obtain positive electrode powder and the positive electrode material was coated to prepare thin-film electrodes.XRD,SEM,particle size distribution analysis and differential thermal analysis were used to characterize the synthesized materials.The experimental results showed that the initial discharge voltage of FeS_(2),CoS_(2)and other cathode materials was lower.Copper vanadate and its modified materials had high voltage but unstable performance.NiCl_(2)electrode materials had lower electronic conductivity and longer activation time.Compared with the NiCl_(2)material,the initial discharge voltage of NiF_(2)materials was high,its discharge plateau was long and the activation time was short.
作者
孙杨
张书弟
杨少华
赵彦龙
白银祥
占先知
SUN Yang;ZHANG Shu-di;YANG Shao-hua;ZHAO Yan-long;BAI Yin-xiang;ZHAN Xian-zhi(School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang Liaoning 110168,China;Liaoning Special Reserve Power Supply Professional Technology Innovation Center,Shenyang Liaoning 110168,China;Xi'an North Qinghua Electromechanical Co.,Ltd.,North Special Energy Group,Xi’an Shaanxi 710025,China)
出处
《辽宁化工》
CAS
2022年第5期683-687,共5页
Liaoning Chemical Industry
关键词
热电池
正极材料
放电性能
制备工艺
Thermal battery
Cathode material
Discharge performance
Preparation Process
