The effects of temperature on the electrochemical performance of sodium-nickel chloride batteries

► A planar-type sodium-nickel chloride battery with a thin BASE was tested at low temperatures. ► The battery was able to be cycled at C/3 rate at as low as 175 °C. ► Low operating temperature resulted in an improvement in the stability of cell performance. ► Performance degradation at higher temperatures was related to the particle growth in the cathode.