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Kim, Guntae
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Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, PEMFC, metal-air batteries, Metal-CO2 system, Catalyst for DRM

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Carbon Nanofibers Encapsulated Nickel-Molybdenum Nanoparticles as Hydrogen Evolution Catalysts for Aqueous Zn-CO2 System

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dc.contributor.author Asokan, Arunchander ko
dc.contributor.author Lim, Chaehyun ko
dc.contributor.author Kim, Jeongwon ko
dc.contributor.author Kwon, Ohhun ko
dc.contributor.author Lee, Hansol ko
dc.contributor.author Joo, Sangwook ko
dc.contributor.author Jeong, Hu Young ko
dc.contributor.author Kim, Guntae ko
dc.date.available 2020-05-15T09:26:31Z -
dc.date.created 2020-05-13 ko
dc.date.issued 2020-04 ko
dc.identifier.citation CHEMNANOMAT ko
dc.identifier.issn 2199-692X ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/32070 -
dc.description.abstract Carbon capture, utilization and storage techniques have been studied extensively to reduce atmospheric carbon dioxide. However, CO2 conversion technologies are not widely proposed due to sluggish conversion rate, high energy consumption and need for precious metals as catalysts. Therefore, novel metal-CO2 electrochemical cell has been proposed to utilize CO2 to produce electricity and H-2 gas continuously. Electrochemical hydrogen evolution reaction under neutral condition has demanded the overall device performance. Herein, we have developed non-precious NiMo-carbon nanofiber-based catalyst with unique matchstick-like morphology using low temperature CVD technique and demonstrated in aqueous Zn-CO2 system. The NiMo alloy offers excellent activity by promoting hydrogen adsorption/desorption and chemically bonded carbon nanofiber assists catalytic activity by providing charge transfer. Due to superior characteristics, NiMo-carbon nanofiber exhibits significant HER activity (over-potential of 268 mV at 10 mA cm(-2)) in CO2-saturated 1 M KOH and superior cell performance in aqueous Zn-CO2 system (peak power density of 25 mW cm(-2)). In addition, the stability of the catalysts has also been investigated using chronopotentiometry and the results have compared with commercial Pt/C catalysts. We are hopeful that the present study will provide insights into developing non-precious electrocatalysts, particularly for metal-CO2 electrochemical conversion devices. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Carbon Nanofibers Encapsulated Nickel-Molybdenum Nanoparticles as Hydrogen Evolution Catalysts for Aqueous Zn-CO2 System ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85084040820 ko
dc.identifier.wosid 000527067400001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/cnma.202000099 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/full/10.1002/cnma.202000099 ko
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