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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
2013-09Ordered mesoporous Co3O4 spinels as stable, bifunctional, noble metal-free oxygen electrocatalystsSa, Young Jin; Kwon, Kyungjung; Cheon, Jae Yeong, et alARTICLE855 Ordered mesoporous Co3O4 spinels as stable, bifunctional, noble metal-free oxygen electrocatalysts
2013-09Ordered mesoporous porphyrinic carbons with very high electrocatalytic activity for the oxygen reduction reactionCheon, Jae Yeong; Kim, Taeyoung; Choi, YongMan, et alARTICLE964 Ordered mesoporous porphyrinic carbons with very high electrocatalytic activity for the oxygen reduction reaction
2013-09Effect of Pt Particle Size on the Hydroisomerization of n-Dodecane Over Pt/Al-SBA-15 CatalystsLee, Hyung Won; Jeon, Jong-Ki; Jeong, Kwang-Eun, et alARTICLE801 Effect of Pt Particle Size on the Hydroisomerization of n-Dodecane Over Pt/Al-SBA-15 Catalysts
2013-08Three-dimensional pillared metallomacrocycle-graphene frameworks with tunable micro- and mesoporosityKim, Tae Kyung; Cheon, Jae Yeong; Yoo, Kyung, et alARTICLE785 Three-dimensional pillared metallomacrocycle-graphene frameworks with tunable micro- and mesoporosity
2013-06Seed-mediated synthesis and structural analysis of hierarchical silver microparticles (HiAgMPs) with highly nanotextured surfacesHan, Sang Hun; Cheon, Jae Yeong; Joo, Sang Hoon, et alARTICLE689 Seed-mediated synthesis and structural analysis of hierarchical silver microparticles (HiAgMPs) with highly nanotextured surfaces
2013-06Nanoporous metal oxides with tunable and nanocrystalline frameworks via conversion of metal-organic frameworksKim, Tae Kyung; Lee, Kyung Joo; Cheon, Jae Yeong, et alARTICLE694 Nanoporous metal oxides with tunable and nanocrystalline frameworks via conversion of metal-organic frameworks
2013-04Bio-Oil Upgrading via Catalytic Pyrolysis of Waste Mandarin Residue Over SBA-15 CatalystsKim, Jeong Wook; Joo, Sang Hoon; Seo, Bora, et alARTICLE751 Bio-Oil Upgrading via Catalytic Pyrolysis of Waste Mandarin Residue Over SBA-15 Catalysts
2013-04Catalytic pyrolysis of biomass components over mesoporous catalysts using Py-GC/MSJeon, Mi-Jin; Jeon, Jong-Ki; Suh, Dong Jin, et alARTICLE863 Catalytic pyrolysis of biomass components over mesoporous catalysts using Py-GC/MS
2013-03Polymer electrolyte membrane fuel cell performance degradation by coolant leakage and recoveryJung, Ju Hae; Kim, Se Hoon; Hur, Seung Hyun, et alARTICLE683 Polymer electrolyte membrane fuel cell performance degradation by coolant leakage and recovery
2013-01Ordered mesoporous carbon-carbon nanotube nanocomposites as highly conductive and durable cathode catalyst supports for polymer electrolyte fuel cellsCheon, Jae Yeong; Ahn, Chiyeong; You, Dae Jong, et alARTICLE739 Ordered mesoporous carbon-carbon nanotube nanocomposites as highly conductive and durable cathode catalyst supports for polymer electrolyte fuel cells
2013-01Effects of ionomer content on Pt catalyst/ordered mesoporous carbon support in polymer electrolyte membrane fuel cellsAhn, Chi-Yeong; Cheon, Jae-Yeong; Joo, Sang-Hoon, et alARTICLE718 Effects of ionomer content on Pt catalyst/ordered mesoporous carbon support in polymer electrolyte membrane fuel cells
2012-11Intrinsic Relation between Catalytic Activity of CO Oxidation on Ru Nanoparticles and Ru Oxides Uncovered with Ambient Pressure XPSQadir, Kamran; Joo, Sang Hoon; Mun, Bongjin S., et alARTICLE806 Intrinsic Relation between Catalytic Activity of CO Oxidation on Ru Nanoparticles and Ru Oxides Uncovered with Ambient Pressure XPS
2012-10Ordered Mesoporous Carbon Supported Colloidal Pd Nanoparticle Based Model Catalysts for Suzuki Coupling Reactions: Impact of Organic Capping AgentsChoi, Ha Rim; Woo, Hyunje; Jang, Seongwan, et alARTICLE817 Ordered Mesoporous Carbon Supported Colloidal Pd Nanoparticle Based Model Catalysts for Suzuki Coupling Reactions: Impact of Organic Capping Agents
2012-08Highly interconnected ordered mesoporous carbon-carbon nanotube nanocomposites: Pt-free, highly efficient, and durable counter electrodes for dye-sensitized solar cellsJo, Yimhyun; Cheon, Jae Yeong; Yu, Jeonghun, et alARTICLE806 Highly interconnected ordered mesoporous carbon-carbon nanotube nanocomposites: Pt-free, highly efficient, and durable counter electrodes for dye-sensitized solar cells
2012-08In situ-generated metal oxide catalyst during CO oxidation reaction transformed from redox-active metal-organic framework-supported palladium nanoparticlesKim, Jin Yeong; Jin, Mingshi; Lee, Kyung Joo, et alARTICLE993 In situ-generated metal oxide catalyst during CO oxidation reaction transformed from redox-active metal-organic framework-supported palladium nanoparticles
2012-05Assembling Gold Nanocubes Into a Nanoporous Gold MaterialOh, Ju-Hwan; Sa, Young Jin; Joo, Sang Hoon, et alARTICLE746 Assembling Gold Nanocubes Into a Nanoporous Gold Material
2012-05Trend of catalytic activity of CO oxidation on Rh and Ru nanoparticles: Role of surface oxideKim, Sunmi; Qadir, Kamran; Jin, Sookyoung, et alARTICLE737 Trend of catalytic activity of CO oxidation on Rh and Ru nanoparticles: Role of surface oxide
2012-04Carbon-supported ultra-high loading Pt nanoparticle catalyst by controlled overgrowth of Pt: Improvement of Pt utilization leads to enhanced direct methanol fuel cell performanceYou, Dae Jong; Kwon, Kyungjung; Joo, Sang Hoon, et alARTICLE707 Carbon-supported ultra-high loading Pt nanoparticle catalyst by controlled overgrowth of Pt: Improvement of Pt utilization leads to enhanced direct methanol fuel cell performance
2012-02Size effect of RhPt bimetallic nanoparticles in catalytic activity of CO oxidation: Role of surface segregationPark, Jeong Y.; Zhang, Yawen; Joo, Sang Hoon, et alARTICLE704 Size effect of RhPt bimetallic nanoparticles in catalytic activity of CO oxidation: Role of surface segregation
2012-01Ordered Mesoporous Carbon Nitrides with Graphitic Frameworks as Metal-Free, Highly Durable, Methanol-Tolerant Oxygen Reduction Catalysts in an Acidic MediumKwon, Kyungjung; Sa, Young Jin; Cheon, Jae Yeong, et alARTICLE743 Ordered Mesoporous Carbon Nitrides with Graphitic Frameworks as Metal-Free, Highly Durable, Methanol-Tolerant Oxygen Reduction Catalysts in an Acidic Medium

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