电流密度、温度、阴极孔隙率和N2溶解度因子对Li-N2电池放电性能的影响
Li-N2 battery discharge performances affected by discharge current density,temperature,cathode porosity and N2 solubility factor
赵旭东 1薛红涛 2汤富领2
作者信息
- 1. 兰州理工大学材料科学与工程学院,甘肃兰州 730050
- 2. 兰州理工大学材料科学与工程学院,甘肃兰州 730050;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
- 折叠
摘要
Li-N2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N2溶解度因子对Li-N2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N2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N2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.
Abstract
Li-N2 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 N2 solubility factor in the electrolyte have an effect on the discharge performance of Li-N2 battery;a larger discharge current density will reduce the voltage and capacity of the battery;cathode porosity and N2 solubility factor in the electrolyte are the key factors that affect the voltage and capacity of the battery,and increasing the cathode porosity and N2 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-N2电池/有限元分析/COMSOL/放电过程Key words
Li-N2 batteries/finite element analysis/COMSOL/discharge process引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据