Nickel-iron battery-based electrochemical energy storage systems for rural/remote area telecommunication

A sealed, starved-electrolyte, negative-limited 6V / 1Ah laboratory prototype of a nickel-iron (Ni-Fe) battery comprising five cells stacked in series with ceria-supported platinum as hydrogen-oxygen recombinant catalyst has been reported. The battery has been tested under various operational conditions. While a continuous rise of gaseous pressure in the cells is observed without the recombinant catalyst, the cells with the recombinant catalyst registered a decline in the gaseous pressure subsequent to the onset of hydrogen-oxygen recombination. The battery showed little decay in its capacity during its life-cycle tests conducted at C/5 rate at 25°C. The battery performance is superior to its conventional vented-counterpart.