Nanostructured Transition Metal-Based Electrocatalysts: A Promising Pathway in Anion Exchange Membrane Water Electrolysis

Anion exchange membrane water electrolysis (AEMWE) represents a viable technology for the sustainable production of hydrogen (H2). Traditional noble metal catalysts, such as platinum and iridium, are costly, which impedes their commercial viability. This review explores the potential of nanostructured transition metal-based compounds (TMCs) as non-noble metal electrocatalysts such as transition metal dichalcogenides (TMD), transition metal sulfides (TMS), transition metal oxides (TMO), and other transition metal compounds for AEMWE, highlighting their advantageous properties for the H2 evolution reaction (HER) and oxygen evolution reaction (OER). It also discusses the challenges and opportunities related to implementation, including stability and durability issues, mass transport limitations, and scalability concerns. By providing a comprehensive overview of the recent progress in nanostructured TMCs for AEMWE, this review aims to stimulate further research and development initiatives to achieve the commercialization of this sustainable energy technology without relying on precious metals.