Three-dimensional NiFe layered double hydroxide film for high-efficiency oxygen evolution reaction

Fabricating activematerials into specific macrostructures is critical in the pursuit of high electro-catalytic activity. Herein we demonstrate that a three- dimensional (3D) architecture of NiFe layered double hydroxide (NiFe-LDH) significantly reduced the onset potential, yielded high current density at small overpotentials, and showed outstanding stability in electrochemical oxygen evolution reaction.