Abstract:
Water Splitting by electrocatalysis is one method of attaining sustainable production
of hydrogen as a clean and promising energy source. Previous studies have shown
that perovskite can be effective electrocatalyst for overall water splitting. Herein,
double perovskites being highly stable structures have been reported to perform
exceptionally in harsh electrochemical environments. The Praseodymium (Pr) doped
Strontium Titanium Ferrite (STF) electrocatalyst was tested as an electrocatalyst for
water splitting with conductive nickel foam. Pr was doped both on A and B sites of
the STF’s double perovskite structure, and the SrTiFe0.9Pr0.1O6-δ (STFP01) showed
the best results with an oxygen evolution reaction (OER) overpotential of 277.6
mV@ 5 mV/s and a hydrogen evolution reaction (HER) overpotential of 182.4 mV@
5 mV/s with low Tafel slopes of 73 mV/dec and 77 mV/dec, respectively. The
sponge-like structure of Pr-doped STF exhibits excellent potential to be a viable
electrocatalyst while providing a stable structure.
