储能科学与技术 ›› 2022, Vol. 11 ›› Issue (9): 3021-3027.doi: 10.19799/j.cnki.2095-4239.2022.0256

• 创刊十周年专刊 • 上一篇    下一篇

管式ZEBRA电池的长循环性能与电压弛豫曲线分析

胡英瑛(), 王静宜(), 吴相伟, 温建国, 温兆银()   

  1. 中国科学院能量转换材料重点实验室，中国科学院上海硅酸盐研究所，上海 200050
  • 收稿日期:2022-05-11 修回日期:2022-06-09 出版日期:2022-09-05 发布日期:2022-08-30
  • 通讯作者: 温兆银 E-mail:yyhu@mail.sic.ac.cn;wangjingyi@student.sic.ac.cn;zywen@mail.sic.ac.cn
  • 作者简介:胡英瑛（1985—），女，博士，副研究员，从事储能钠电池的材料与器件研究，E-mail：yyhu@mail.sic.ac.cn
    王静宜（1995—），女，博士研究生，从事钠电池技术研究，E-mail：wangjingyi@student.sic.ac.cn；
  • 基金资助:
    国家自然科学基金(51972323);中国科学院战略性先导科技专项子课题(XDA21070306)

Analysis of long cycle performance and voltage relaxation curves of tubular ZEBRA batteries

Yingying HU(), Jingyi WANG(), Xiangwei WU, Jianguo WEN, Zhaoyin WEN()   

  1. CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • Received:2022-05-11 Revised:2022-06-09 Online:2022-09-05 Published:2022-08-30
  • Contact: Zhaoyin WEN E-mail:yyhu@mail.sic.ac.cn;wangjingyi@student.sic.ac.cn;zywen@mail.sic.ac.cn

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摘要：

管式ZEBRA电池(也称钠-金属氯化物电池)在电网储能、备用电源和极端环境等领域具有广阔的应用前景，已处于商业化示范应用发展阶段。然而，进一步提高其长循环性能仍是下一代ZEBRA电池的研发重点。判断ZEBRA电池的健康状态对于预测其循环稳定性至关重要。我们结合管式电芯的阴极颗粒特征、长循环性能曲线与放电电压弛豫曲线进行了分析，得到ZEBRA电池将经历前期活化、中期性能稳定和后期性能老化等三个不同的性能阶段。通过观察ZEBRA电池的电压弛豫曲线的变化，可以较好地判断电池性能所处的阶段，从而获取电池的健康状态。并以此判断为基础，通过改变阴极的组成可达到减少电池活化时间，保持电池长循环稳定性的目的。

关键词: ZEBRA电池, 钠-金属氯化物电池, 钠盐电池, 电压弛豫, 循环性能

Abstract:

The tubular ZEBRA battery (also called sodium-metal chloride battery) has extensive prospects in grid energy storage, backup power supply, and extreme environment applications, and has been commercially exhibited. However, enhancing its cycle stability performance is still the focus of the next-generation ZEBRA battery. Determining the state of health (SOH) is crucial to forecasting the cycle stability of the ZEBRA battery. Based on the analysis of the cathode particle characteristics, long cycle performance curves, and voltage relaxation curves of the tubular cell, we discovered that the ZEBRA battery would go through three distinct performance stages, namely, early activation, performance stabilization, and later performance aging stage. By observing the modifications in the voltage relaxation curves, we could judge the performance stage and obtain the ZEBRA battery's SOH. Based on the judgment, changing the composition of the cathode could reduce the activation time, and improve the long cycle stability of the battery.

Key words: ZEBRA battery, sodium metal chloride battery, sodium salt battery, voltage relaxation, cycle performance

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