Shin, Dongyoon Choun, Myounghoon Ham, Hyung Chul Lee, Jae Kwang Lee, Jaeyoung 2024-01-20T00:33:02Z 2024-01-20T00:33:02Z 2021-09-05 2017-09-07 1463-9076 https://pubs.kist.re.kr/handle/201004/122297 There is growing interest in alkaline water electrolysis as a sustainable approach for producing hydrogen, but developing efficient and inexpensive catalysts for the oxygen evolution reaction, which can limit the operational efficiency of water electrolysis due to its considerable overpotential, is regarded as the most overriding challenge. Therefore, significant progress has been made in developing catalysts with transition metal and carbon materials as alternative catalysts. Here, we prepared cobalt containing carbon nanofibers via a facile route of electrospinning and pyrolysis, and metal leached carbon nanofibers were also prepared by subsequently leaching the metal. Despite metal leaching, the latter ones still show comparable activity and stability with iridium black in alkaline water electrolysis. After detailed physicochemical and electrochemical characterizations, we revealed that graphitic edge plane rich carbon is mainly responsible for the activity of our material rather than embedded metal species. In addition, the metal plays a role in forming the specific carbon structure along with improving graphitization based on the catalytic graphitization. This result indicates the importance of the graphitic edge plane and might be helpful to understand carbon anodes for alkaline water electrolysis. English ROYAL SOC CHEMISTRY OXYGEN REDUCTION REACTION N-DOPED GRAPHENE METAL-FREE EVOLUTION REACTION NITROGEN IRON ELECTROCATALYST NANOPARTICLES CATALYSTS NANOFIBER A graphitic edge plane rich meso-porous carbon anode for alkaline water electrolysis Article 10.1039/c7cp03208k 1 PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.19, no.33, pp.21987 - 21995 PHYSICAL CHEMISTRY CHEMICAL PHYSICS 19 33 21987 21995 scie scopus 000408257700009 2-s2.0-85028429037 Chemistry, Physical Physics, Atomic, Molecular & Chemical Chemistry Physics Article OXYGEN REDUCTION REACTION N-DOPED GRAPHENE METAL-FREE EVOLUTION REACTION NITROGEN IRON ELECTROCATALYST NANOPARTICLES CATALYSTS NANOFIBER alkaline water electrolysis carbon anode