Nickel–vanadium monolayer double hydroxide for efficient electrochemical water oxidation

Highly active and low-cost electrocatalysts for water oxidation are required due to the demands on sustainable solar fuels; however, developing highly efficient catalysts to meet industrial requirements remains a challenge. Herein, we report a monolayer of nickel-vanadium-layered double hydroxide that shows a current density of 27 mA cm(-2) (57 mA cm(-2) after ohmic-drop correction) at an overpotential of 350 mV for water oxidation. Such performance is comparable to those of the best-performing nickel-iron-layered double hydroxides for water oxidation in alkaline media. Mechanistic studies indicate that the nickel-vanadium-layered double hydroxides can provide high intrinsic catalytic activity, mainly due to…

• NN
  National Natural Science Foundation of China

  Awards: 21120102036, 91233201, 21120102036, 91233201
• KO
  Knut och Alice Wallenbergs Stiftelse
• V
  Vetenskapsrådet

  Awards: 21120102036, 91233201
• E
  Energimyndigheten

  Awards: 91233201, 21120102036
• UU
  Uppsala Universitet
• NK
  National Key Research and Development Program of China

  Award: 2014CB239402