王康康,高飞,杨凯,耿萌萌,刘皓,范茂松,张明杰.锂离子电池电化学性能及阻抗参数的Arrhenius特性分析[J].稀有金属材料与工程,2019,48(4):1208~1212.[wangkangkang,gaofei,yangkai,gengmengmeng,liuhao,fanmaosong,zhangmingjie.Arrhenius properities of electrochemical performance and impedance parameters of lithium ion batteries[J].Rare Metal Materials and Engineering,2019,48(4):1208~1212.]
锂离子电池电化学性能及阻抗参数的Arrhenius特性分析
投稿时间:2017-08-31  修订日期:2018-01-08
中文关键词:  磷酸铁锂电池  电化学阻抗  Arrhenius关系  离子扩散系数
基金项目:国家自然科学基金资助(项目号DG71-14-043),国家电网公司科技项目(项目号DG71-15-037)
中文摘要:
      本文考察了环境温度对18650型磷酸铁锂(LFP)电池和高镍三元(NCA)电池充电容量的影响,比较了两种电池的低温性能。对不同环境温度的满电状态电池进行电化学阻抗测试,根据等效电路拟合计算了电池的欧姆电阻值(RS)、膜电阻值(Rf)和电荷转移电阻值(Rct),并分析了各电阻与温度的特定关系,结果表明LFP电池的欧姆电阻和膜电阻在-10~25 ℃温度区间具有Arrhenius关系,电荷转移电阻在-10~50 ℃温度区间具有Arrhenius关系;NCA电池的膜电阻和电荷转移电阻在0~50 ℃温度区间具有Arrhenius关系。对比分析不同温度的固相离子扩散系数表明,LFP电池的固相离子迁移速率受低温影响较大,NCA电池的固相离子扩散过程受环境温度影响较小。
Arrhenius properities of electrochemical performance and impedance parameters of lithium ion batteries
英文关键词:LiFePO4 battery  electrochemical impedance  Arrhenius relation  ion diffusion coefficient
英文摘要:
      The influence of ambient temperatures on charging capacities of 18650 type LFP and NCA batteries were investigated in this paper, and the performance in low temperature was compared. Electrochemical impedance measurements were taken in various temperatures, the values of ohm, film and charge transfer resistances were confirmed according to equivalent circuits. As for LFP batteries, ohmic resistance and film resistance are well meet the Arrhenius relations in the range of -10~25 ℃, however, in a wider range of -10~50 ℃ charge transfer resistance is well meet. However, as for NCA batteries, film resistance and charge transfer resistance are complyed with Arrhenius relations in range of 0~50 ℃. The comparison analyses of solid phase ion diffusion coefficient in different temperatures indicate that the ion diffusion rate of LFP battery is obviously affected by low temperatures, nevertheless, slightly affected for the NCA battery.
作者单位E-mail
王康康 中国电力科学研究院新能源与储能运行控制国家重点实验室 wangkangkang@epri.sgcc.com.cn 
高飞 中国电力科学研究院新能源与储能运行控制国家重点实验室  
杨凯 中国电力科学研究院新能源与储能运行控制国家重点实验室  
耿萌萌 中国电力科学研究院新能源与储能运行控制国家重点实验室  
刘皓 中国电力科学研究院新能源与储能运行控制国家重点实验室  
范茂松 中国电力科学研究院新能源与储能运行控制国家重点实验室  
张明杰 中国电力科学研究院新能源与储能运行控制国家重点实验室  
摘要点击次数: 71
全文下载次数: 39
查看全文  查看/发表评论  
关闭