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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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Identifying the electrocatalytic active sites of a Ru-based catalyst with high Faraday efficiency in CO2-saturated media for an aqueous Zn-CO2 system

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dc.contributor.author Kim, Jeongwon ko
dc.contributor.author Yang, Yejin ko
dc.contributor.author Seong, Arim ko
dc.contributor.author Noh, Hyuk-Jun ko
dc.contributor.author Kim, Changmin ko
dc.contributor.author Joo, Sangwook ko
dc.contributor.author Cho, Ara ko
dc.contributor.author Zhang, Linjuan ko
dc.contributor.author Zhou, Jing ko
dc.contributor.author Wang, Jian-Qiang ko
dc.contributor.author Han, Jeong Woo ko
dc.contributor.author Mahmood, Javeed ko
dc.contributor.author Baek, Jong-Beom ko
dc.contributor.author Kim, Guntae ko
dc.date.available 2021-01-14T17:01:35Z -
dc.date.created 2021-01-09 ko
dc.date.issued 2020-08 ko
dc.identifier.citation JOURNAL OF MATERIALS CHEMISTRY A, v.8, no.30, pp.14927 - 14934 ko
dc.identifier.issn 2050-7488 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/49515 -
dc.description.abstract Developing a cost-effective, scalable, and efficient electrocatalyst for the hydrogen evolution reaction (HER) is the heart of producing pure hydrogen in practical applications. In this work, a unique approach to allow ruthenium (Ru) nanoparticles on carboxyl-functionalized porous sphere carbon (CF-Ru@PSC) for an aqueous Zn-CO2 system is reported. The CF-Ru@PSC catalyst was produced by inducing additional junction sites between metallic Ru and the carbon substrate for enhanced HER properties under a CO2 saturated condition. The strongly bonded Ru-C caused electron transfer from the bottom side of the metallic Ru to the PSC substrate, leading to efficient hydrogen adsorption energy of the surface. The DFT calculations and XAFS investigation suggested that the reconstructed electronic configuration from the Ru-C linkage acted as an efficient active site for HER. The CF-Ru@PSC electrocatalyst presented a high turnover frequency of 2.70H(2) s(-1) at an overpotential of 0.20 V in the CO2-saturated condition and high Faraday efficiency (98.2%) over 1000 min in the aqueous Zn-CO2 system. ko
dc.language 영어 ko
dc.publisher ROYAL SOC CHEMISTRY ko
dc.title Identifying the electrocatalytic active sites of a Ru-based catalyst with high Faraday efficiency in CO2-saturated media for an aqueous Zn-CO2 system ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85089403782 ko
dc.identifier.wosid 000555361700034 ko
dc.type.rims ART ko
dc.identifier.doi 10.1039/d0ta03050c ko
dc.identifier.url https://pubs.rsc.org/en/content/articlelanding/2020/TA/D0TA03050C#!divAbstract ko
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