Answer to Question #289888 in General Chemistry for Prajwal

Question

Construction and working of sodium ion battery

Answer 1

The anode is a disordered carbon material consisting of a non-graphitizable, non-crystalline and amorphous carbon structure (hard carbon)

The cathode is based on sodium transition metal oxides.

Sodium ion batteries can use aqueous as well as non-aqueous electrolytes containing dissociated sodium salts in polar protic or aprotic solvents.

During charging, sodium ions are extracted from the cathode and inserted into the anode while the electrons travel through the external circuit; during discharging, the reverse process occurs where the sodium ions are extracted from the anode and re-inserted in the cathode with the electrons travelling through the external circuit doing useful work.