Synthesis of Self-Supported Amorphous CoMoO4 Nanowire Array for Highly Efficient Hydrogen Evolution Reaction

Water electrolysis is known as the most environmental friendly and renewable technology to generate hydrogen. To make it more energy-efficient, development of a promising cathodic hydrogen evolution reaction electrocatalyst is important. In this communication, amorphous CoMoO4 nanowire array on Ti mesh (CoMoO4 NWA/Ti) was synthesized via a simple two-step hydrothermal method. As a three-dimensional hydrogen-evolving electrode, CoMoO4 NWA/Ti shows superior catalytic activity in 1.0 M KOH and demands overpotentials of only 81 and 243 mV to achieve current densities of 10 and 100 mA cm–2, respectively. Remarkably, it also has long-term electrochemical durability.