Charge-discharge Processes of Zn-In and Zn-Sb Alloys in an Alkaline Medium for Batteries Application: A Comparative Study

Zinc is one of the most commonly used and important metals in alkaline batteries. For more than a century, alkaline batteries have played a significant part in the span of electrical energy systems. It has been revealed that increasing battery life while maintaining zinc's sacrificial protection requires the addition of a small amount of indium or antimony as an alloying element. Due to their high energy density, rechargeable alkali metal-air batteries are regarded the most viable alternative for the power source of electric vehicles (EVs). The charge-discharge performance of Zn, Zn-1% in, and Zn-1% Sb alloys in 6 M KOH solution was investigated electrochemically using Galvanostatic Charge Discharge techniques. Adding 1% Zn causes the observed voltage to increase to a larger negative potential value, according to the charge-discharge data. Nonetheless, this voltage is changed to a less negative direction by adding the same quantity of Sb. However, greater capacitance values can be obtained at 1% in when compared to Sb. This implies that 1% in alloying with Zn is more beneficial to charge effectiveness and capacitance than 1% Sb alloying. The capacitance value of Zn-1%. In alloy is high (179 Fg), whereas the capacitance values of Zn and Zn-1%Sb alloy are 174 and 162 Fg, respectively. Furthermore, when compared to Zn-1 percent Sb alloy, Zn-1 percent in alloy has a longer discharge duration. Finally, small amounts of in or Sb alloyed with Zn can be considered viable composites for long-life alkaline batteries.