Iridium-Tungsten Alloy Nanodendrites as pH-Universal Water-Splitting Electrocatalysts.

ABSTRACT: The development of highly efficient and durable electrocatalysts for high-performance overall water-splitting devices is crucial for clean energy conversion. However, the existing electrocatalysts still suffer from low catalytic efficiency, and need a large overpotential to drive the overall water-splitting reactions. Herein, we report an iridium-tungsten alloy with nanodendritic structure (IrW ND) as a new class of high-performance and pH-universal bifunctional electrocatalysts for hydrogen and oxygen evolution catalysis. The IrW ND catalyst presents a hydrogen generation rate ∼2 times higher than that of the commercial Pt/C catalyst in both acid and alkaline media, which is among the most active hydrogen evolution reaction (HER) catalysts yet reported. The density functional theory (DFT)

SUBMITTER: Lv F 

PROVIDER: S-EPMC6161040 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature