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Joo, Sang Hoon (주상훈)

Department
Department of Chemistry(화학과)
Website
http://shjoo.unist.ac.kr/
Lab
Nanomaterials and Catalysis Lab. (나노재료및촉매 연구실)
Research Keywords
나노재료, 촉매, 에너지 변환, 연료전지, 수전해, 산소환원반응, 수소발생반응, 산소발생반응, Nanomaterials, OER, Catalyst, ORR, HER, electrolyzer, energy conversion, fuel cells
Research Interests
The coupled challenges of a doubling in the world’s energy needs by the year 2050 and the ever-increasing demands for “clean” energy sources have brought increasing attention worldwide to the possibility of a “hydrogen economy” as a long-term solution for securing energy future. While the hydrogen economy offers a compelling vision of an energy future for the world, significant scientific and technical challenges should be addressed to achieve its implementation. The key components for the hydrogen-based energy cycle are integrated electrochemical energy devices such as fuel cells, water electrolyzers, and solar fuel systems. The performance of these energy conversion devices depends critically on the efficiency and durability/stability of catalysts for electrochemical reactions at the electrodes of these devices. The reactions include the electrocatalytic hydrogen oxidation reaction (HOR) and oxygen reduction reaction (ORR) of a hydrogen fuel cell, and the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) of a water electrolyzer. These reactions involve multi-electron transfers and are kinetically demanding. Hence, precious metal-based materials such as Pt, Ru, or Ir with high reaction kinetics have been prevalent choice of catalysts. However, the prohibitively high cost and scarcity of precious metal-based catalysts combined with declining activity during long-term operation have impeded the widespread use of fuel cells and water electrolyzers. Hence, the development of economic electrocatalysts with high activity and durability/stability has been of utmost importance in this area of research.Combining solid-state materials chemistry, electrochemistry, and catalysis, Prof. Joo’s group has endeavored to (i) develop highly active, stable, and cost-effective electrocatalysts for renewable energy conversion reactions, (ii) identify the activity descriptor and active sites of catalysts by exploiting in situ spectroscopic methods in combination with theoretical calculations, and (iii) translate the newly developed catalysts into system-level devices. Ultimate goal of our research is to establish the catalyst structure-activity relationship, which in turn help design next-generation catalysts for renewable energy conversion reactions.
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Issue DateTitleAuthor(s)TypeViewAltmetrics
2006-12Ordered mesoporous carbons (OMC) as supports of electrocatalysts for direct methanol fuel cells (DMFC): Effect of carbon precursors of OMC on DMFC performancesJoo, Sang Hoon; Pak, Chanho; You, Dae Jong, et alARTICLE700 Ordered mesoporous carbons (OMC) as supports of electrocatalysts for direct methanol fuel cells (DMFC): Effect of carbon precursors of OMC on DMFC performances
2006-09Preparation of ultra high loading supported Pt catalyst for direct methanol fuel cellJoo, Sang Hoon; Lee, Seol-Ah; You, Dae Jong, et alARTICLE623 Preparation of ultra high loading supported Pt catalyst for direct methanol fuel cell
2006-05Surface selective polymerization of polypyrrole on ordered mesoporous carbon: Enhancing interfacial conductivity for direct methanol fuel cell applicationChoi, YS; Joo, Sang Hoon; Lee, SA, et alARTICLE601 Surface selective polymerization of polypyrrole on ordered mesoporous carbon: Enhancing interfacial conductivity for direct methanol fuel cell application
2005-09Nitrogen adsorption of cobalt-incorporated MCM-41 materials after compression at high pressurePak, C; Joo, SH; Haller, GLARTICLE586
2004-05Nanostructured Carbon Materials Synthesized from Mesoporous Silica Crystals by ReplicationRyoo, Ryong; Joo, Sang HoonARTICLE569 Nanostructured Carbon Materials Synthesized from Mesoporous Silica Crystals by Replication
2003-06Pore structure and graphitic surface nature of ordered mesoporous carbons probed by low-pressure nitrogen adsorptionDarmstadt, H; Roy, C; Kaliaguine, S, et alARTICLE625 Pore structure and graphitic surface nature of ordered mesoporous carbons probed by low-pressure nitrogen adsorption
2003-05Direct observation of 3D mesoporous structure by scanning electron microscopy (SEM): SBA-15 silica and CMK-5 carbonChe, SN; Lund, K; Tatsumi, T, et alARTICLE712 Direct observation of 3D mesoporous structure by scanning electron microscopy (SEM): SBA-15 silica and CMK-5 carbon
2003-03Characterization of regular and plugged SBA-15 silicas by using adsorption and inverse carbon replication and explanation of the plug formation mechanismKruk, M; Jaroniec, M; Joo, Sang Hoon, et alARTICLE668 Characterization of regular and plugged SBA-15 silicas by using adsorption and inverse carbon replication and explanation of the plug formation mechanism
2003Thermally induced structural changes in SBA-15 and MSU-H silicas and their implications for synthesis of ordered mesoporous carbonsJoo, Sang Hoon; Ryoo, R; Kruk, M, et alARTICLE661
2003Synthesis of mesoporous carbons with various pore diameters via control of pore wall thickness of mesoporous silicasLee, Sae-Seung; Joo, Sang Hoon; Ryoo, RyongARTICLE618
2003Structures of silica-mesoporous crystals and novel mesoporous carbon-networks synthesized within the poresTerasaki, O; Liu, Z; Ohsuna, T, et alARTICLE665 Structures of silica-mesoporous crystals and novel mesoporous carbon-networks synthesized within the pores
2003Regeneration of mesoporous inorganic materials using ordered mesoporous carbon as the templateKim, JM; Kang, M; Yi, SH, et alARTICLE684
2003X-ray diffraction analysis of mesostructured materials by continuous density function techniqueSolovyov, LA; Belousov, OV; Shmakov, AN, et alARTICLE735 X-ray diffraction analysis of mesostructured materials by continuous density function technique
2002-05Evidence for general nature of pore interconnectivity in 2-dimensional hexagonal mesoporous silicas prepared using block copolymer templatesJoo, Sang Hoon; Ryoo, R; Kruk, M, et alARTICLE569 Evidence for general nature of pore interconnectivity in 2-dimensional hexagonal mesoporous silicas prepared using block copolymer templates
2002-02Synthesis of mesoporous silicas of controlled pore wall thickness and their replication to ordered nanoporous carbons with various pore diametersLee, JS; Joo, Sang Hoon; Ryoo, RARTICLE636 Synthesis of mesoporous silicas of controlled pore wall thickness and their replication to ordered nanoporous carbons with various pore diameters
2002-02Structural study of mesoporous MCM-48 and carbon networks synthesized in the spaces of MCM-48 by electron crystallographyKaneda, M; Tsubakiyama, T; Carlsson, A, et alARTICLE852 Structural study of mesoporous MCM-48 and carbon networks synthesized in the spaces of MCM-48 by electron crystallography
2002Mesoporous materials for heavy metal ion adsorption synthesized by displacement of polymeric templateAntochshuk, V; Jaroniec, M; Joo, Sang Hoon, et alARTICLE811
2002Detailed structure of the hexagonally packed mesostructured carbon material CMK-3Solovyov, LA; Shmakov, AN; Zaikovskii, VI, et alARTICLE709 Detailed structure of the hexagonally packed mesostructured carbon material CMK-3
2001-07Ordered nanoporous arrays of carbon supporting high dispersions of platinum nanoparticlesJoo, Sang Hoon; Choi, SJ; Oh, I, et alARTICLE1007 Ordered nanoporous arrays of carbon supporting high dispersions of platinum nanoparticles
2001-06Synthesis of ordered mesoporous carbon molecular sieves CMK-1Joo, Sang Hoon; Jun, S; Ryoo, RARTICLE694 Synthesis of ordered mesoporous carbon molecular sieves CMK-1

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