Novel Hydrothermally Synthesized Strontium Telluride Nanoballs as: Efficient Electrocatalyst for Oxygen Evolution Reaction

The engineering of extremely efficient, low-cost, and stable electrocatalysts were required for the sluggish oxygen evolution reaction (OER). Herein, using hydrothermal technique, strontium telluride (SrTe/GC) nanoballs fabricated for water splitting to work efficiently as an efficient OER catalysts. According to physical and chemical characterizations, SrTe/GC nanoballs exhibits a three-dimensional form and homogeneous surface distribution, performing a low overpotential of 268 mV at 10 mA/cm 2 with small Tafel slope of 25 mV/dec. The fabricated material exhibits excellent stability of 24 hours with no decline in current density. The Te-induced metallic telluride and substantial covalency around the strontium center is responsible for this catalyst's outstanding performance. This study reveals the valuable insight of metal telluride materials to function as an extraordinarily efficient and stable OER catalysts at high current densities.