HIGHLY EFFICIENT LOW PGM CATHODE CATALYST FOR AEM WATER ELECTROLYSIS

Electricity cost is one of the main expenses in water electrolysis, so improving conversion efficiency in electrolysers is crucial. Our innovative Anion Exchange Membrane (AEM) water electrolysis cathode catalyst rivals the efficiency of Carbon-Platinum (Pt/C) at a much lower cost. It combines nickel with a small amount of a Platinum Group Metal (PGM) through a unique one-step synthesis. In a three-electrode setup at 20°C and 0.1 mol/L KOH with a 10 mA/cm² current density, pure Ni stands at -280 mV overpotential, while our catalyst shows -110 mV, close to Pt/C 60%’s -105 mV, thus enhancing both affordability and performance in hydrogen production. At 1 mol/L KOH, our catalyst’s overpotential even drops to -65 mV, versus -50 mV for Pt/C 60%.

Applications

Hydrogen production

Competitive advantages

• One-step material synthesis
• Cost-efficient catalyst
• Higher production efficiency

Intellectual property

Patent

Keywords

Anion exchange membrane water electrolysis - Hydrogen evolution - Hydrogen production - Ultra-low PGM content - Nickel-based catalyst - One-pot synthesis