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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
2019-07Ordered Mesoporous Metastable α-MoC 1− x with Enhanced Water Dissociation Capability for Boosting Alkaline Hydrogen Evolution ActivityBaek, Du San; Jung, Gwan Yeong; Seo, Bora, et alARTICLE346 Ordered Mesoporous Metastable α-MoC 1− x with Enhanced Water Dissociation Capability for Boosting Alkaline Hydrogen Evolution Activity
2019-06Asymmetric polystyrene-polylactide bottlebrush random copolymers: Synthesis, self-assembly and nanoporous structuresCho, Seungwan; Son, Jinha; Kim, Inhye, et alARTICLE250 Asymmetric polystyrene-polylactide bottlebrush random copolymers: Synthesis, self-assembly and nanoporous structures
2019-03Nanocrevasse-Rich Carbon Fibers for Stable Lithium and Sodium Metal AnodesGo, Wooseok; Kim, Min-Ho; Park, Jehee, et alARTICLE502 Nanocrevasse-Rich Carbon Fibers for Stable Lithium and Sodium Metal Anodes
2019-01Topotactic Transformations in an Icosahedral Nanocrystal to Form Efficient Water-Splitting CatalystsOh, Aram; Kim, Ho Young; Baik, Hionsuck, et alARTICLE437 Topotactic Transformations in an Icosahedral Nanocrystal to Form Efficient Water-Splitting Catalysts
2019-01Heterogeneous Co-N/C Electrocatalysts with Controlled Cobalt Site Densities for the Hydrogen Evolution Reaction: Structure-Activity Correlations and Kinetic InsightsSa, Young Jin; Park, Sung O.; Jung, Gwan Yeong, et alARTICLE389 Heterogeneous Co-N/C Electrocatalysts with Controlled Cobalt Site Densities for the Hydrogen Evolution Reaction: Structure-Activity Correlations and Kinetic Insights
2019-01Active Edge-Site-Rich Carbon Nanocatalysts with Enhanced Electron Transfer for Efficient Electrochemical Hydrogen Peroxide ProductionSa, Young Jin; Kim, Jae Hyung; Joo, Sang HoonARTICLE313 Active Edge-Site-Rich Carbon Nanocatalysts with Enhanced Electron Transfer for Efficient Electrochemical Hydrogen Peroxide Production
2018-12Nanodendrites of platinum-group metals for electrocatalytic applicationsChaudhari, Nitin K.; Joo, Jinwhan; Kwon, Hyuk-bu, et alARTICLE33 Nanodendrites of platinum-group metals for electrocatalytic applications
2018-11Hollow nanoparticles as emerging electrocatalysts for renewable energy conversion reactionsPark, Jongsik; Kwon, Taehyun; Kim, Jun, et alARTICLE33 Hollow nanoparticles as emerging electrocatalysts for renewable energy conversion reactions
2018-11AA′-Stacked Trilayer Hexagonal Boron Nitride Membrane for Proton Exchange Membrane Fuel CellsYoon, Seong In; Seo, Dong-Jun; Kim, Gwangwoo, et alARTICLE438 AA′-Stacked Trilayer Hexagonal Boron Nitride Membrane for Proton Exchange Membrane Fuel Cells
2018-10Realizing High-Performance Li-Polysulfide Full Cells by using a Lithium Bis(trifluoromethanesulfonyl)imide Salt Electrolyte for Stable CyclabilityAhad, Syed Abdul; Pitchai, Ragupathy; Beyene, Anteneh Marelign, et alARTICLE692 Realizing High-Performance Li-Polysulfide Full Cells by using a Lithium Bis(trifluoromethanesulfonyl)imide Salt Electrolyte for Stable Cyclability
2018-10Highly Crystalline Pd13Cu3S7 Nanoplates Prepared via Partial Cation Exchange of Cu1.81S Templates as an Efficient Electrocatalyst for the Hydrogen Evolution ReactionPark, Jongsik; Jin, Haneul; Lee, Jaeyoung, et alARTICLE25 Highly Crystalline Pd13Cu3S7 Nanoplates Prepared via Partial Cation Exchange of Cu1.81S Templates as an Efficient Electrocatalyst for the Hydrogen Evolution Reaction
2018-10Promoting Oxygen Reduction Reaction Activity of Fe-N/C Electrocatalysts by Silica-Coating-Mediated Synthesis for Anion-Exchange Membrane Fuel CellsWoo, Jinwoo; Yang, Seung Yong; Sa, Young Jin, et alARTICLE801 Promoting Oxygen Reduction Reaction Activity of Fe-N/C Electrocatalysts by Silica-Coating-Mediated Synthesis for Anion-Exchange Membrane Fuel Cells
2018-10Hierarchically Porous Adamantane-Shaped Carbon NanoframesJeoung, Sungeun; Ju, In Tae; Kim, Jae Hyung, et alARTICLE745 Hierarchically Porous Adamantane-Shaped Carbon Nanoframes
2018-09An IrRu alloy nanocactus on Cu2-xS@IrSy as a highly efficient bifunctional electrocatalyst toward overall water splitting in acidic electrolytesJoo, Jinhwan; Jin, Haneul; Oh, Aram, et alARTICLE28 An IrRu alloy nanocactus on Cu2-xS@IrSy as a highly efficient bifunctional electrocatalyst toward overall water splitting in acidic electrolytes
2018-07Impact of Textural Properties of Mesoporous Porphyrinic Carbon Electrocatalysts on Oxygen Reduction Reaction ActivityWoo, Jinwoo; Sa, Young Jin; Kim, Jae Hyung, et alARTICLE482 Impact of Textural Properties of Mesoporous Porphyrinic Carbon Electrocatalysts on Oxygen Reduction Reaction Activity
2018-06Oxygen-deficient triple perovskites as highly active and durable bifunctional electrocatalysts for oxygen electrode reactionsKim, Nam-In; Sa, Young Jin; Yoo, Tae Sup, et alARTICLE600 Oxygen-deficient triple perovskites as highly active and durable bifunctional electrocatalysts for oxygen electrode reactions
2018-06A facet-controlled Rh3Pb2S2 nanocage as an efficient and robust electrocatalyst toward the hydrogen evolution reactionKim, Taekyung; Park, Jongsik; Jin, Haneul, et alARTICLE345 A facet-controlled Rh3Pb2S2 nanocage as an efficient and robust electrocatalyst toward the hydrogen evolution reaction
2018-06WATER ELECTROLYSIS: A magnetic boostSeo, Bora; Joo, Sang HoonARTICLE402 WATER ELECTROLYSIS: A magnetic boost
2018-06Strategies for Enhancing the Electrocatalytic Activity of M-N/C Catalysts for the Oxygen Reduction ReactionSa, Young Jin; Woo, Jinwoo; Joo, Sang HoonARTICLE366 Strategies for Enhancing the Electrocatalytic Activity of M-N/C Catalysts for the Oxygen Reduction Reaction
2018-03MOF-Derived Cu@Cu2O Nanocatalyst for Oxygen Reduction Reaction and Cycloaddition ReactionKim, Aram; Muthuchamy, Nallal; Yoon, Chohye, et alARTICLE376 MOF-Derived Cu@Cu2O Nanocatalyst for Oxygen Reduction Reaction and Cycloaddition Reaction

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