Activating nickel foam with trace titanium oxide for enhanced water oxidation

Nickel-based electrocatalysts for water oxidation suffer from low activity and poor stability. In this work, 0.015 mg cm −2 TiO 2 nanosheets anchored on Ni foam addressed these problems after electrochemical activation. In situ investigations, including Raman spectra, corroborated the enhanced generation of highly active Ni( iii )-O-O species on Ni foam in the presence of trace TiO 2 . Trace TiO 2 deposition enhanced the generation of highly active Ni species on Ni foam for water oxidation of high activity and stability.