电流密度、温度、阴极孔隙率和N_(2)溶解度因子对Li-N_(2)电池放电性能的影响  

Li-N_(2)battery discharge performances affected by discharge current density,temperature,cathode porosity and N_(2)solubility factor

作　　者：赵旭东[1] 薛红涛[1,2] 汤富领 Zhao Xudong;Xue Hongtao;Tang Fuling(State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China;School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050 [2]兰州理工大学有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《可再生能源》2024年第1期9-15,共7页Renewable Energy Resources

基　　金：国家自然科学基金项目(11764027)。

摘　　要：Li-N_(2)电池是一种具有电化学固氮功能的新型储能系统,文章利用有限元软件COMSOL耦合多物理场建立的电化学模型能揭示各因素对其放电性能的影响。模拟结果表明:放电电流密度、温度、阴极孔隙率和电解液中的N_(2)溶解度因子对Li-N_(2)电池的放电性能均有影响;较大的放电电流密度会降低该电池的电压和容量;阴极孔隙率和电解液中的N_(2)溶解度因子是影响该电池电压和容量的关键性因素,提高阴极孔隙率和电解液中的N_(2)溶解度因子均能增加该电池的电压和容量;电池放电的平台电压随温度升高而升高,但放电容量几乎不受温度影响。Li-N_(2)battery is a new type of energy storage system with the function of electrochemical nitrogen fixation,and the electrochemical model established in the article used finite element software COMSOL coupled with multi-physics field can reveal the influence of various factors on its discharge performance.The simulation results show that:the discharge current density,temperature,cathode porosity and N_(2)solubility factor in the electrolyte have an effect on the discharge performance of Li-N_(2)battery;a larger discharge current density will reduce the voltage and capacity of the battery;cathode porosity and N_(2)solubility factor in the electrolyte are the key factors that affect the voltage and capacity of the battery,and increasing the cathode porosity and N_(2)solubility factor in the electrolyte can increase the voltage and capacity of the battery;With the temperature rising,the voltage of the discharge platform of the battery increases,but the discharge capacity is almost unaffected by temperature.

关 键 词：Li-N_(2)电池 有限元分析 COMSOL 放电过程 

分 类 号：TM911[电气工程—电力电子与电力传动]