Progress and prospects of sodium-sulfur batteries: A review
A commercialized high temperature Na-S battery shows upper and lower plateau voltage at 2.075 and 1.7 V during discharge , , .The sulfur cathode has theoretical capacity of 1672, 838 and 558 mAh g − 1 sulfur, if all the elemental sulfur changed to Na 2 S, Na 2 S 2 and Na 2 S 3 respectively bining sulfur cathode with sodium anode and suitable