Operating Temperature on Cathode Material and Electrochemical Performance of Na-NiCl 2 Batteries

【Author】

AO Xin;WU Xiang-Wei;WU Tian;WU Mei-Fen;WEN Zhao-Yin

【Institution】

CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences;University of Chinese Academy of Sciences;CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences;CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences;University of Chinese Academy of Sciences;CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences;CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences

【Abstract】

Na-NiCl 2 battery is an intermediate temperature battery of which the operating temperature is one of the crucial factors for its electrochemical performance and needs to be fully understand. The effects of operating temperature on electrochemical performance of Na-NiCl 2 batteries and morphology of the cathode material under different temperatures were studied based on the results of battery test, EIS and SEM measurements. It was found that the reduction of the operating temperature of the Na-NiCl 2 battery within a certain range suppressed the growth of nickel particles during cycling and improved the cycle performance of the battery with and without sulfur in the cathode. The surface activity of the nickel particles decreased with reduction of the operating temperature, while the growth rate of nickel particles slowed down at low temperature, resulting in improved cycle performance of the battery. However, much lower operating temperature led to poor electrochemical performance due to slow electrochemical reaction rate, migration rate of Na + and poor wettability of sodium on ceramic electrolyte. Based on the above tests, the optimum operating temperatures of the battery no matter with or without sulfur were about 260 °C.

【Keywords】

Na-NiCl 2 battery;operating temperature;cathode material;electrochemical performance;sulfur additive

References

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Springer Journals Database

Total: 20 articles

  • [1] LIN Zu-xiang (Shanghai Institute of Ceramics, Chinese Academy of Sciences,Shanghai 200050,China), A brief introduction to the study on beta″-alumina of Shanghai Institute of Ceramics, Journal of Functional Materials,
  • [2] HU Yingying,WEN Zhaoyin,RUI Kun,WU Xiangwei (CAS Key Laboratory of Materials for Energy Conversion,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China), State-of-the-art research and development status of sodium batteries, Energy Storage Science and Technology,
  • [3] AO Xin;WU Xiangwei;HU Yingying;WEN Zhaoyin;CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences;, Influence of sulfur additive on the cycling performance of sodium-nickel chloride battery and its mechanism analysis, Energy Storage Science and Technology,
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