사진

  • ResearcherID
  • ResearchGate
  • ORCiD
  • Scopus
  • Google Citations

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.
This table browses all dspace content
Issue DateTitleAuthor(s)TypeViewAltmetrics
2016-10Self-Supported Mesostructured Pt-Based Bimetallic Nanospheres Containing an Intermetallic Phase as Ultrastable Oxygen Reduction ElectrocatalystsKim, Ho Young; Cho, Seonghun; Sa, Young Jin, et alARTICLE710 Self-Supported Mesostructured Pt-Based Bimetallic Nanospheres Containing an Intermetallic Phase as Ultrastable Oxygen Reduction Electrocatalysts
2016-09Ternary dendritic nanowires as highly active and stable multifunctional electrocatalystsYang, Yoojin; Jin, Haneul; Kim, Ho Young, et alARTICLE667 Ternary dendritic nanowires as highly active and stable multifunctional electrocatalysts
2016-09Rational design of Pt-Ni-Co ternary alloy nanoframe crystals as highly efficient catalysts toward the alkaline hydrogen evolution reactionOh, Aram; Sa, Young Jin; Hwang, Hyeyoun, et alARTICLE627 Rational design of Pt-Ni-Co ternary alloy nanoframe crystals as highly efficient catalysts toward the alkaline hydrogen evolution reaction
2016-08Synthesis of bare Pt3Ni nanorods from PtNi@Ni core-shell nanorods by acid etching: One-step surfactant removal and phase conversion for optimal electrochemical performance toward oxygen reduction reactionYoon, Jisun; Park, Jongsik; Sa, Young Jin, et alARTICLE439 Synthesis of bare Pt3Ni nanorods from PtNi@Ni core-shell nanorods by acid etching: One-step surfactant removal and phase conversion for optimal electrochemical performance toward oxygen reduction reaction
2016-08Shape effects of nickel phosphide nanocrystals on hydrogen evolution reactionSeo, Bora; Baek, Du San; Sa, Young Jin, et alARTICLE485 Shape effects of nickel phosphide nanocrystals on hydrogen evolution reaction
2016-07Patternable Nanoporous Carbon Electrodes for Use as SupercapacitorsLim, Yeoungjin; Woo, Jinwoo; Joo, Sang Hoon, et alARTICLE648 Patternable Nanoporous Carbon Electrodes for Use as Supercapacitors
2016-07Size-Dependent Activity Trends Combined with in Situ X-ray Absorption Spectroscopy Reveal Insights into Cobalt Oxide/Carbon Nanotube-Catalyzed Bifunctional Oxygen ElectrocatalysisSeo, Bora; Sa, Young Jin; Woo, Jinwoo, et alARTICLE753 Size-Dependent Activity Trends Combined with in Situ X-ray Absorption Spectroscopy Reveal Insights into Cobalt Oxide/Carbon Nanotube-Catalyzed Bifunctional Oxygen Electrocatalysis
2016-06Ordered mesoporous copper oxide nanostructures as highly active and stable catalysts for aqueous click reactionsJang, Seongwan; Sa, Young Jin; Joo, Sang Hoon, et alARTICLE767 Ordered mesoporous copper oxide nanostructures as highly active and stable catalysts for aqueous click reactions
2016-05Effect of surface oxygen functionalization of carbon support on the activity and durability of Pt/C catalysts for the oxygen reduction reactionKim, Jae Hyung; Cheon, Jae Yeong; Shin, Tae Joo, et alARTICLE892 Effect of surface oxygen functionalization of carbon support on the activity and durability of Pt/C catalysts for the oxygen reduction reaction
2016-05Enhancing activity and stability of cobalt oxide electrocatalysts for the oxygen evolution reaction via transition metal dopingKim, Nam-In; Sa, Young Jin; Cho, Sung-Hwa, et alARTICLE454 Enhancing activity and stability of cobalt oxide electrocatalysts for the oxygen evolution reaction via transition metal doping
2016-04Graphitic Nanoshell/Mesoporous Carbon Nanohybrids as Highly Efficient and Stable Bifunctional Oxygen Electrocatalysts for Rechargeable Aqueous Na-Air BatteriesCheon, Jae Young; Kim, Kyoung Ho; Sa, Young Jin, et alARTICLE776 Graphitic Nanoshell/Mesoporous Carbon Nanohybrids as Highly Efficient and Stable Bifunctional Oxygen Electrocatalysts for Rechargeable Aqueous Na-Air Batteries
2016-04Enhancement of oxygen reduction reaction activities by Pt nanoclusters decorated on ordered mesoporous porphyrinic carbonsHwang, Sun-Mi; Choi, YongMan; Kim, Min Gyu, et alARTICLE653 Enhancement of oxygen reduction reaction activities by Pt nanoclusters decorated on ordered mesoporous porphyrinic carbons
2016-03Facet-controlled hollow Rh2S3 hexagonal nanoprisms as highly active and structurally robust catalysts toward hydrogen evolution reactionYoon, Dongwhan; Seo, Bora; Lee, Jaeyoung, et alARTICLE636 Facet-controlled hollow Rh2S3 hexagonal nanoprisms as highly active and structurally robust catalysts toward hydrogen evolution reaction
2016-02Control of the surface atomic population of Rh0.5</inf>Pd0.5</inf> bimetallic nanoparticles supported on CeO2</inf>Bernardi, Fabiano; Grass, Michael E.; Hong, Young P., et alARTICLE809 Control of the surface atomic population of Rh<inf>0.5</inf>Pd<inf>0.5</inf> bimetallic nanoparticles supported on CeO<inf>2</inf>
2015-12Green synthesis of the reduced graphene oxide-CuI quasi-shell-core nanocomposite: A highly efficient and stable solar-light-induced catalyst for organic dye degradation in waterChoi, Jiha; Reddy, D. Amaranatha; Islam, M. Jahurul, et alARTICLE776 Green synthesis of the reduced graphene oxide-CuI quasi-shell-core nanocomposite: A highly efficient and stable solar-light-induced catalyst for organic dye degradation in water
2015-10Coordination chemistry of [Co(acac)2] with N-doped graphene: Implications for oxygen reduction reaction reactivity of organometallic Co-O4-N speciesHan, Jongwoo; Sa, Young Jin; Shim, Yeonjun, et alARTICLE838 Coordination chemistry of [Co(acac)2] with N-doped graphene: Implications for oxygen reduction reaction reactivity of organometallic Co-O4-N species
2015-10Noble Metal-Free Electrocatalysts for the Hydrogen Evolution ReactionSeo, Bora; Joo, Sang HoonARTICLE616
2015-09Noncovalent Surface Locking of Mesoporous Silica Nanoparticles for Exceptionally High Hydrophobic Drug Loading and Enhanced Colloidal StabilityPalanikumar, L.; Kim, Ho Young; Oh, Joon Young, et alARTICLE729 Noncovalent Surface Locking of Mesoporous Silica Nanoparticles for Exceptionally High Hydrophobic Drug Loading and Enhanced Colloidal Stability
2015-09Nanoscale adhesion between Pt nanoparticles and carbon support and its influence on the durability of fuel cellsKim, Jong Hun; Yuk, Youngji; Joo, Hye Sook, et alARTICLE766 Nanoscale adhesion between Pt nanoparticles and carbon support and its influence on the durability of fuel cells
2015-07Structural Evolution of Chemically-Driven RuO2 Nanowires and 3-Dimensional Design for Photo-Catalytic ApplicationsPark, Joonmo; Lee, Jae Won; Ye, Byeong Uk, et alARTICLE776 Structural Evolution of Chemically-Driven RuO2 Nanowires and 3-Dimensional Design for Photo-Catalytic Applications

MENU