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Korean J. Met. Mater.
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전기화학적 및 고압 수소 분위기하 템퍼드 마르텐사이트강의 수소취화 특성 비교
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김상규, 김재윤, 서현주, 정환교, 박재영, 백운봉, 황병철
Korean J. Met. Mater.
2023;61(11):807-814. Published online 2023 Oct 29
DOI:
https://doi.org/10.3365/KJMM.2023.61.11.807
Abstract
The effect of hydrogen charging methods on the hydrogen embrittlement characteristics of tempered martensitic steels were discussed in terms of hydrogen diffusion behavior. Two tempered martensitic steels with different Si content were fabricated by quenching and tempering. The steel with high Si content had a lower cementite fraction because the.....
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Korean J. Met. Mater.
2023;61(2):115-119. Published online 2023 Jan 27
DOI:
https://doi.org/10.3365/KJMM.2023.61.2.115
Abstract
As interest in hydrogen energy grows, eco-friendly methods of producing hydrogen are being explored. CuBi
2
O
4
is one of the p-type semiconductor cathode materials that can be used for photoelectrochemical hydrogen production via environment-friendly water electrolysis. CuBi
2
O
4
has a bandgap of 1.5 – 1.8 eV which allows it to photogenerate electrons.....
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Li 도핑에 따른 CuO 광전극의 광전기화학적 특성 개선 연구
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배성찬, 이성혁, 류혁현, 이원재
Korean J. Met. Mater.
2022;60(8):577-586. Published online 2022 Jul 12
DOI:
https://doi.org/10.3365/KJMM.2022.60.8.577
Abstract
We fabricated a Li doped CuO photoelectrode by doping CuO with Li to improve the photoelectrochemical properties of the CuO photoelectrode. The fabricated Li doped CuO photoelectrode was optimized by experimentally investigating Li doping concentration, annealing temperature, and spin coating deposition cycle. It was confirmed that Li doped CuO had.....
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Web of Science 2
Crossref 3
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Korean J. Met. Mater.
2022;60(7):517-522. Published online 2022 Jun 3
DOI:
https://doi.org/10.3365/KJMM.2022.60.7.517
Abstract
Improving solar energy conversion efficiency and reducing energy loss have become critical issues in recent decades. Photoelectrochemical (PEC) water splitting provides an ideal method for solar energy harvesting and is a key factor in decreasing the use of fossil fuels. Thus, it is extremely important to identify cost-effective, highly active,.....
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Web of Science 3
Crossref 2
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Korean J. Met. Mater.
2021;59(11):821-828. Published online 2021 Oct 28
DOI:
https://doi.org/10.3365/KJMM.2021.59.11.821
Abstract
A three-dimensionally interconnected graphene-reinforced Cu (3Di Gr-Cu) composite was synthesized using a simple two-step process technique which involves the mechanical compaction of micronsized Cu particles followed by chemical vapor deposition (CVD) at 995 ℃. The microstructural properties of pure Cu and the 3Di Gr-Cu composite were investigated by optical.....
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Web of Science 2
Crossref 2
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첨가제를 이용하여 제작한 WO
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광전극의 광전기화학적 특성 개선 연구
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전승환, 정현진, 배성찬, 류혁현, 이원재
Korean J. Met. Mater.
2021;59(3):177-186. Published online 2021 Feb 19
DOI:
https://doi.org/10.3365/KJMM.2021.59.3.177
Abstract
In this study, we deposited a WO
3
thin-film photoelectrode on a fluorine-doped tin oxide (FTO) substrate using a spin-coating method, and we investigated the photocurrent density and dark current density of the WO
3
photoelectrode with various amounts of H
2
O
2
additive. The morphological, structural, optical, electrical and photoelectrochemical properties of the.....
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Crossref 1
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Korean J. Met. Mater.
2020;58(9):645-652. Published online 2020 Aug 13
DOI:
https://doi.org/10.3365/KJMM.2020.58.9.645
Abstract
Because of their simplicity and low equipment costs, various oxidation methods can be used to create metal oxides, but they still require long processing times and/or high temperatures. In this study, a new electrochemical oxidation (ECO) method, which oxidizes metal in DI water with a constant flowing current to both.....
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Web of Science 2
Crossref 1
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개선된 화학 용액 증착법 성장 온도에 따른 Fe
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O
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광전극의 물리화학적 및 광전기화학적 특성 연구
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홍예진, 전승환, 류혁현, 이원재
Korean J. Met. Mater.
2020;58(4):263-271. Published online 2020 Mar 10
DOI:
https://doi.org/10.3365/KJMM.2020.58.4.263
Abstract
In this study, Fe
2
O
3
photoelectrode thin films were grown on fluorine-doped tin oxide substrates at various temperatures ranging from 145 to 220 oC using modified chemical bath deposition. The morphological, structural, electrical, and photoelectrochemical properties of the resulting Fe
2
O
3
photoelectrode were analyzed using field emission scanning electron microscopy, X-ray diffraction,.....
More
Web of Science 3
Crossref 2
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CuO 버퍼층 증착 횟수에 따른 CuO 광전극의 광전기화학적 특성 연구
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전승환, 홍예진, 류혁현, 이원재
Korean J. Met. Mater.
2019;57(7):447-455. Published online 2019 Jun 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.7.447
Abstract
In this study, a CuO buffer layer was deposited on a fluorine-doped tin oxide (FTO) substrate using a spin coating method, and then a CuO photoelectrode was grown on the CuO buffer layer using a modified-chemical bath deposition (M-CBD) method. We investigated the morphological, structural, optical, electrical and photoelectrochemical properties.....
More
Web of Science 2
Crossref 1
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마이크로파 화학 용액 증착법을 이용하여 성장시킨 ZnO 나노로드의 형태학적, 구조적, 광학적 그리고 광전기화학적 특성 변화 연구
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오성진, 류혁현, 이원재
Korean J. Met. Mater.
2017;55(4):255-263. Published online 2017 Apr 6
DOI:
https://doi.org/10.3365/KJMM.2017.55.4.255
Abstract
In this study, zinc oxide (ZnO) nanostructures were grown on a ZnO-buffered fluorine-doped tin oxide (FTO) substrate using a microwave chemical bath deposition method with different zinc oxide precursor concentrations from 0.01 to 0.5 M. We investigated the effects of the zinc oxide precursor concentration on the morphological, structural, optical.....
More
Crossref 4
Optical Devices & Energy Materials
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수열합성법으로 성장시킨 TiO
2
나노로드의 형태학적, 구조적, 광전기화학적 특성 연구
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최하영, 류혁현, 이원재
Korean J. Met. Mater.
2017;55(1):46-52. Published online 2017 Jan 5
DOI:
https://doi.org/10.3365/KJMM.2017.55.1.46
Abstract
We investigated the effects of growth duration on the morphological, structural, and photoelectrochemical properties of TiO
2
nanorods grown on a TiO
2
-buffered fluorine-doped tin oxide (FTO) substrate using the hydrothermal method. From the study, we found that the photoelectrochemical properties were mainly dependent on the nanorod length and (002) XRD peak.....
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