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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
2011-08Ultrathin titania coating for high-temperature stable SiO2/Pt nanocatalystsReddy, A. Satyanarayana; Kim, Sunmi; Jeong, Hu Young, et alARTICLE656 Ultrathin titania coating for high-temperature stable SiO2/Pt nanocatalysts
2011-07Study of electro-chemical properties of metaloxide interfaces using a newly constructed ambient pressure X-ray photoelectron spectroscopy endstationAksoy, Funda; Grass, Michael E.; Joo, Sang Hoon, et alARTICLE835 Study of electro-chemical properties of metaloxide interfaces using a newly constructed ambient pressure X-ray photoelectron spectroscopy endstation
2011-04Enhancement of electrochemical stability and catalytic activity of Pt nanoparticles via strong metal-support interaction with sulfur-containing ordered mesoporous carbonKwon, Kyungjung; Jin, Seon-ah; Pak, Chanho, et alARTICLE683 Enhancement of electrochemical stability and catalytic activity of Pt nanoparticles via strong metal-support interaction with sulfur-containing ordered mesoporous carbon
2011-04콜로이드 나노입자 기반 모델 촉매 연구Joo, Sang HoonARTICLE697
2010-07Size Effect of Ruthenium Nanoparticles in Catalytic Carbon Monoxide OxidationJoo, Sang Hoon; Park, Jeong Y.; Renzas, J. Russell, et alARTICLE585 Size Effect of Ruthenium Nanoparticles in Catalytic Carbon Monoxide Oxidation
2010-01Spectroscopic Study of the Thermal Degradation of PVP-Capped Rh and Pt Nanoparticles in H-2 and O-2 EnvironmentsBorodko, Yuri; Lee, Hyun Sook; Joo, Sang Hoon, et alARTICLE599 Spectroscopic Study of the Thermal Degradation of PVP-Capped Rh and Pt Nanoparticles in H-2 and O-2 Environments
2009-10Preparation of high loading Pt nanoparticles on ordered mesoporous carbon with a controlled Pt size and its effects on oxygen reduction and methanol oxidation reactionsJoo, Sang Hoon; Kwon, Kyungjung; You, Dae Jong, et alARTICLE664 Preparation of high loading Pt nanoparticles on ordered mesoporous carbon with a controlled Pt size and its effects on oxygen reduction and methanol oxidation reactions
2009-05Colloidally Synthesized Monodisperse Rh Nanoparticles Supported on SBA-15 for Size- and Pretreatment-Dependent Studies of CO OxidationGrass, Michael E.; Joo, Sang Hoon; Zhang, Yawen, et alARTICLE663 Colloidally Synthesized Monodisperse Rh Nanoparticles Supported on SBA-15 for Size- and Pretreatment-Dependent Studies of CO Oxidation
2009-02Thermally stable Pt/mesoporous silica core-shell nanocatalysts for high-temperature reactionsJoo, Sang Hoon; Park, Jeong Young; Tsung, CK, et alARTICLE606 Thermally stable Pt/mesoporous silica core-shell nanocatalysts for high-temperature reactions
2009Ultrastable Pt nanoparticles supported on sulfur-containing ordered mesoporous carbon via strong metal-support interactionLee, Hyung Ik; Joo, Sang Hoon; Kim, Jin Hoe, et alARTICLE676 Ultrastable Pt nanoparticles supported on sulfur-containing ordered mesoporous carbon via strong metal-support interaction
2008-12Ordered mesoporous carbons with controlled particle sizes as catalyst supports for direct methanol fuel cell cathodesJoo, Sang Hoon; Lee, Hyung Ik; You, Dae Jong, et alARTICLE605 Ordered mesoporous carbons with controlled particle sizes as catalyst supports for direct methanol fuel cell cathodes
2008-06Exfoliated sulfonated poly(arylene ether sulfone)-clay nanocompositesChoi, Yeong Suk; Kim, Tae Kyoung; Kim, Elm Ah, et alARTICLE556 Exfoliated sulfonated poly(arylene ether sulfone)-clay nanocomposites
2008-06Cathode catalyst layer using supported Pt catalyst on ordered mesoporous carbon for direct methanol fuel cellKim, Hee-Tak; You, Dae Jong; Yoon, Hae-Kwon, et alARTICLE676 Cathode catalyst layer using supported Pt catalyst on ordered mesoporous carbon for direct methanol fuel cell
2008-06Exfoliated sulfonated poly(arylene ether sulfone)-clay nanocompositesChoi, Y.S.; Kim, T.K.; Kim, E.A, et alARTICLE576 Exfoliated sulfonated poly(arylene ether sulfone)-clay nanocomposites
2008-05Functionalized carbon nanotube-poly(arylene sulfone) composite membranes for direct methanol fuel cells with enhanced performanceJoo, Sang Hoon; Pak, Chanho; Kim, Eun Ah, et alARTICLE650 Functionalized carbon nanotube-poly(arylene sulfone) composite membranes for direct methanol fuel cells with enhanced performance
2008-02Rational synthesis pathway for ordered mesoporous carbon with controllable 30- To 100-angstrom poresLee, Hyung Ik; Kim, Jin Hoe; You, Dae Jong, et alARTICLE694 Rational synthesis pathway for ordered mesoporous carbon with controllable 30- To 100-angstrom pores
2007-11Ultrafast production of ordered mesoporous carbons via microwave irradiationLee, H.I.; Kim, J.H.; Joo, Sang Hoon, et alARTICLE547 Ultrafast production of ordered mesoporous carbons via microwave irradiation
2007-03Ordered mesoporous carbon as new support for direct methanol fuel cell: controlling of microporosity and graphitic characterPark, Chanho; Joo, Sang Hoon; You, Dae Jong, et alARTICLE447 Ordered mesoporous carbon as new support for direct methanol fuel cell: controlling of microporosity and graphitic character
2007Synthesis and characterization of mesoporous carbon for fuel cell applicationsChang, Hyuk; Joo, Sang Hoon; Pak, ChanhoARTICLE701 Synthesis and characterization of mesoporous carbon for fuel cell applications
2007Direct sulfonation of ordered mesoporous carbon for catalyst support of direct methanol fuel cellPak, Chanho; Joo, Sang Hoon; You, Dae Jong, et alARTICLE723 Direct sulfonation of ordered mesoporous carbon for catalyst support of direct methanol fuel cell

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