- Characteristics of Pt/C Nano-catalyst Synthesized by Arc Plasma Deposition
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Hye-Sook Joo, Han-Shin Choi, Heon-Phil Ha, Do-Hyang Kim
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J Korean Powder Metall Inst. 2012;19(1):6-12.
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DOI: https://doi.org/10.4150/KPMI.2012.19.1.006
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- Electricity is generated by the combined reactions of hydrogen oxidation and oxygen reduction which occur on the Pt/C catalyst surface. There have been lots of researches to make high performance catalysts which can reduce Pt utilization. However, most of catalysts are synthesized by wet-processes and a significant amount of chemicals are emitted during Pt/C synthesis. In this study, Pt/C catalyst was produced by arc plasma deposition process in which Pt nano-particles are directly deposited on carbon black surfaces. During the process, islands of Pt nano-particles were produced and they were very fine and well-distributed on carbon black surface. Compared with a commercialized Pt/C catalyst (Johnson & Matthey), finer particle size, narrower size distribution, and uniform distribution of APD Pt/C resulted in higher electrochemical active surface area even at the less Pt content.
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Citations to this article as recorded by  - Luminescence Properties of InP/ZnS Quantum Dots depending on InP Core synthesis Temperature
Han Wook Seo, Da-Woon Jeong, Min Young Kim, Seoung Kyun Hyun, Ji Sun On, Bum Sung Kim
Journal of Korean Powder Metallurgy Institute.2017; 24(4): 321. CrossRef
- Pt and Polymer Electrolyte Membrane Fuel Cell
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Hye-Sook Joo, Jung-Yeul Yun, Han-Shin Choi
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J Korean Powder Metall Inst. 2011;18(1):1-13.
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DOI: https://doi.org/10.4150/KPMI.2011.18.1.001
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205
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Citations to this article as recorded by - Synthesis of Platinum Nanoparticles by Liquid Phase Reduction
Jin-Ho Lee, Se-Hoon Kim, Jin-Woo Kim, Min-Ha Lee, Young-Do Kim
Journal of Korean Powder Metallurgy Institute.2012; 19(1): 60. CrossRef - Shape Control of Platinum Nanoparticles Using a Metal Salt
Seoung Yeul Kwak, Jin Ho Lee, Jin Woo Kim, Taek Kyun Jung, Young Do Kim
Journal of Korean Powder Metallurgy Institute.2012; 19(6): 393. CrossRef - Luminescent Characteristics of CdSe Quantum Dot Phosphor Depending on Se Precursor Ratio
Nu Si A Eom, Taek-Soo Kim, Yong-Ho Choa, Bum Sung Kim
Journal of Korean Powder Metallurgy Institute.2012; 19(6): 442. CrossRef
- Recycling Technology of Nd-Fe-B based Rare Earth Element Magnets
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Han-Shin Choi, Yong-Hwan Kim
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J Korean Powder Metall Inst. 2010;17(6):435-442.
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DOI: https://doi.org/10.4150/KPMI.2010.17.6.435
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144
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Citations to this article as recorded by - Preparation of Iron Nano-particle by Slurry Reduction Method from Leaching Solution of Spent Nd magnet
Jong-Gwan Ahn, Ryunji Gang, Haebin You, Ho-Sung Yoon
Journal of the Korean Institute of Resources Recycling.2014; 23(6): 22. CrossRef - Synthesis of Iron Nanopowder from FeCl3Solution by Chemical Reduction Method for Recycling of Spent Neodymium Magnet
Yonghwang Ha, Ryun-Ji Gang, Seung-Hoon Choi, Ho-Sung Yoon, Jong-Gwan Ahn
Journal of the Korea Academia-Industrial cooperation Society.2012; 13(12): 6187. CrossRef
- Microstructure Control of Mg Alloy Powder Using a Repeated Extrusion Process
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Jeong-Gon Kim, Han-Shin Choi, Taek-Soo Kim
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J Korean Powder Metall Inst. 2009;16(6):438-441.
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DOI: https://doi.org/10.4150/KPMI.2009.16.6.438
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195
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- Mg-Cu composites were successively fabricated using a combination of rapid solidification and extrusion processes. In addition, the microstructural variation of the composite was investigated by performing the extrusion repeatedly. It resulted that the composite formed an uniform and dense structure by the extrusion, and the microstructure became fine as the extrusion conducted repeatedly. The microstructural variation was known to be dependent on the number of extrusion and the area reduction ratio. The tensile strength was also measured as a function of the microstructural variation.
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Citations to this article as recorded by - High Temperature Deformation Flow Of A ZK60A Magnesium Alloy After Extrusion
M. Kawasaki, H.-J. Lee, M.C. Oh, B. Ahn
Archives of Metallurgy and Materials.2015; 60(2): 1327. CrossRef
- Rare Metal as a National Strategic Material
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Soo-Young Lee, Yul-Kwon Ji, Han-Shin Choi, Hwan-Yong Kim, Jin-Kyu Lee, Taek-Soo Kim
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J Korean Powder Metall Inst. 2009;16(3):161-166.
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DOI: https://doi.org/10.4150/KPMI.2009.16.3.161
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- Status and Prospect of Tungsten Resources and Tungsten Related Industries
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Han-Shin Choi, Y.H. Kim, J.K. Lee
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J Korean Powder Metall Inst. 2008;15(6):441-449.
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DOI: https://doi.org/10.4150/KPMI.2008.15.6.441
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206
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Citations to this article as recorded by - The Current Status and Securing Strategies of Core Mineral Tungsten Resources
Dohyun Jeong, Seongmin Kim, Hoseok Jeon
Journal of the Korean Society of Mineral and Energy Resources Engineers.2023; 60(5): 341. CrossRef - Industrial Supply Chain Trend of Domestic Tungsten
Joon-Woo Song, Sang-Hyun Lee, Hyun-Seon Hong, Hong-Yoon Kang, Soon-Jik Hong
Journal of Korean Powder Metallurgy Institute.2012; 19(1): 79. CrossRef
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