Electrochemically active XWO4 (X = Co, Cu, Mn, Zn) nanostructure for water splitting applications

Electrochemically active XWO4 (X = Co, Cu, Mn, Zn) nanostructures were synthesized successfully by employing solvothermal method. The processing parameters' effect such as time, temperature, pH and solvents on morphological and electrochemical OER performance of XWO4 nanostructures was investigated. The excellent OER response was observed for XWO4 nanostructures synthesized at optimum processing condition. The synthesized samples' superior electrochemical performance was found to be in the following order CoWO4 > MnWO4 > CuWO4 > ZnWO4 by employing CV and LSV studies. The electrochemical impedance spectroscopic analysis was done for all the samples. Good stability over 3600 s was reported for the best-performed samples of XWO4 nanostructures.