Carbon felt/PPy-functionalized/AgCl composite as cathode material for rechargeble Mg cell

Abstract

Carbon felt functionalized with galvanostatically synthesized polypyrrole was used as a substrate for the formation of CF/PPy- AgCl electrode. AgCl was deposited by the application of the SILAR method. The electrochemical behavior of the as-synthesized composite was evaluated through cyclic voltammetry and charge-discharge techniques. Experimental results show the great potential for the usage of composite CF/PPy- AgCl as cathode material in rechargeable aqueous-based Mg cell. In the current range of 135 to 1350 A g-1 , the specific capacity in the range of 35 to 25 Ah kg-1 , the energy of 45 to 25 Wh kg-1 , and power of 100 to 1600 W kg-1 are obtained for the potential rechargeable aqueous AZ63 |3.5% NaCl |CF/PPy-AgCl cell. Additionally, the cyclic stability is assessed, and it is concluded that, depending on the mass of the magnesium alloy, such a simple cell may be charged at least 100 times. The potential for additional system improvement is taken into account. Future work concerns the way of improving the cycling stability of cathode material.