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Redox active MoO3-Polyaniline hybrid composite for hydrogen evolution reaction and supercapacitor application
Affiliation:1. Department of Chemistry, Shivaji University, Kolhapur, 416004, Maharashtra, India;2. CSIR-National Metallurgical Laboratory, Jamshedpur, 831007, Jharkhand, India;3. School of Nanoscience and Technology, Shivaji University, Kolhapur, Maharashtra, 416004, India;4. Polymer Energy Materials Laboratory, School of Advance Chemical Engineering, Chonnam National University, 61186, South Korea;1. Department of Mechanical Engineering, Hindustan Institute of Technology and Science, Padur, Chennai, Tamil Nadu, India;2. Department of Mechanical Engineering, Thanthai Periyar Government Institute of Technology, Vellore, Tamil Nadu, India;1. School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China;2. School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;3. Waikato Centre for Advanced Materials and Manufacturing, School of Engineering, University of Waikato, Hamilton 3240, New Zealand;1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Haidian District, Beijing, 100084, China;2. Shanxi Research Institute for Clean Energy, Tsinghua University, Taiyuan, Shanxi Province, 030032, China
Abstract:A simple oxidative polymerization approach has been used to synthesize MoO3/PANI hybrid composite for energy conversion and storage application. In this carbon-free energy conversion process, as-developed electrocatalyst (MoO3/PANI hybrid composite) has significantly improved the molecular hydrogen generation via electro-reduction of protons. The hydrogen evolution kinetics parameters, overpotential at 10 mA cm−2 is ∼110 mV and Tafel slope 132 mV/dec have been obtained for the as-developed catalyst which suggests the reaction is controlled by Volmer-limited reaction step. Further the as-developed material has been tested for energy storage application and exhibited specific capacitance of 680 F. g−1.
Keywords:Electro-catalyst  Hydrogen evolution reaction  Energy storage  LSV  Tafel slope
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