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Cobalt and cobalt oxide supported on nitrogen-doped porous carbon as electrode materials for hydrogen evolution reaction
Affiliation:1. School of Chemistry and Chemical Engineering, Key Laboratory of Fuel Cell Technology of Guangdong Province, South China University of Technology, Guangzhou, 510640, China;2. Guangzhou Key Laboratory for New Energy and Green Catalysis, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, China;3. Chemical Engineering Department, University of Massachusetts Amherst, 01003, USA;1. Green Center for Systems Biology, University of Texas Southwestern Medical Center, Forest Park, Dallas, TX, 75390, USA;2. Department of Physics and Astronomy, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA;3. Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA;1. College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, Zhejiang, 311121, PR China;2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, PR China;1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230027, PR China;2. School of Civil Engineering, Hefei University of Technology, Hefei 230009, PR China;3. Anhui International Joint Research Center on Hydrogen Safety, Hefei, 230009, China;1. Department of Physical Chemistry, Faculty of Chemistry, University of Kashan, Iran;2. Institute of Nano Science and Nano Technology, University of Kashan, Kashan, Iran;1. LIONS, NIMBE, CEA, CNRS, Université Paris Saclay, F-91191, Gif-sur-Yvette Cedex, France;2. DEN-Service D''Etude Du Comportement des Radionucléides (SECR), CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France;3. Orano TNI, 1 Rue des Hérons, 78180, Montigny Le Bretonneux, France
Abstract:A facile method is proposed to prepare cobalt supported on nitrogen-doped porous carbon material with high graphitization degree by using chitosan as carbon source, urea as soft template and poloxamer as dispersant. The prepared cobalt-carbon material (Co@NPC) shows that uniformly distributed cobalt nanoparticles are encapsulated in nitrogen-doped porous carbon bundle with large specific surface area. When Co@NPC is applied as electrode in hydrogen evolution reaction, it exhibits superior electrocatalytic performance with low overpotential (η10 = 259 mV), small Tafel slope (99 mV dec−1) and high stability with 83% of its original current density remained after 6 h electrochemical test in 1 M potassium hydroxide electrolyte.
Keywords:Electrocatalysts  Hydrogen evolution reaction  Energy conversion  Nitrogen-doped porous carbon  Cobalt catalyst
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