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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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Self-reconstructed interlayer derived by in-situ Mn diffusion from La0.5Sr0.5MnO3 via atomic layer deposition for an efficient bi-functional electrocatalyst

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dc.contributor.author Seong, Arim ko
dc.contributor.author Kim, Jeongwon ko
dc.contributor.author Kwon, Ohhun ko
dc.contributor.author Jeong, Hu Young ko
dc.contributor.author Gorte, Raymond J. ko
dc.contributor.author Vohs, John M. ko
dc.contributor.author Kim, Guntae ko
dc.date.available 2020-05-29T00:39:38Z -
dc.date.created 2020-05-25 ko
dc.date.issued 2020-05 ko
dc.identifier.citation NANO ENERGY, v.71, pp.104564 ko
dc.identifier.issn 2211-2855 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/32196 -
dc.description.abstract The development of efficient electrocatalyst is crucial to realize a sustainable energy conversion and storage system. Herein, we have applied atomic layer deposition (ALD) to depositing nano-sized Co3O4 onto La0.5Sr0.5MnO3 (LSM). Interestingly, an in-situ Mn diffusion from LSM during ALD process gives a self-reconstructed MnCo2O4 spinel interlayer between LSM and Co3O4. The X-ray absorption fine structure (XAFS) of LSM with 20 ALD cycles of Co3O4 (LSM-20-Co) showed a partially left-shifted white line of Co K-edge compared to the that of Co3O4, confirming the existence of the MnCo2O4 interlayer. Notably, the LSM-20-Co catalyst showed comparable Tafel slope for both the ORR (65 mV dec(-1)) and the OER (82 mV dec(-1)) comparing with the Pt/C (58 mV dec(-1)) and IrO2 (114 mV dec(-1)), along with stable cycling performance over 450 min for alkaline Zinc-air battery. This work provides the rational design strategy of self-constructed interlayer via ALD process for efficient bi-functional electrocatalyst. ko
dc.language 영어 ko
dc.publisher ELSEVIER ko
dc.title Self-reconstructed interlayer derived by in-situ Mn diffusion from La0.5Sr0.5MnO3 via atomic layer deposition for an efficient bi-functional electrocatalyst ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85079097312 ko
dc.identifier.wosid 000530670200029 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.nanoen.2020.104564 ko
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S2211285520301221?via%3Dihub#! ko
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