Template-Free Hydrothermal Synthesis of Nanorod (RuTi)O2 Composite Cathode for Hydrogen Evolution in Alkali Solution

Abstract

Abstract.A novel nanorod (RuTi)O 2 composite cathode has been prepared via a facile and controllable approach. X-ray diffraction (XRD), scanning electron microscopy (SEM), and linear scanning voltammetry (LSV) were used to scrutinize the electrodes and the electrochemical performance. The results reveal that the designed nanorod (RuTi)O 2 composite cathode displays high electrocatalytic performance for the hydrogen evolution evolution (HER) in alkali solution with a low onset overpotential. For driving a cathodic current density of 100 mA cm -2 , it only needs overpotential of 220 mV. Such excellent performance of the NR-(RuTi)O 2 /Ti could be ascribed to the unique surface structure with more active sites to be utilized during the HER.