What are Some Common Catalysts for Water Splitting?
Catalysts for water splitting can be broadly classified into two categories: - Noble Metal Catalysts: Platinum (Pt) is widely used for HER, while iridium oxide (IrO₂) and ruthenium oxide (RuO₂) are common for OER. - Non-Noble Metal Catalysts: Transition metal compounds such as nickel, cobalt, and iron-based materials are being explored to reduce costs. Examples include nickel-iron layered double hydroxides (NiFe-LDH) and cobalt phosphides (CoP).
