UST 학생

Thermal engineering, Supercritical CO2 power generation, Heat pump, Thermal energy conversion

- Optimization and Operation Technology Development of Supercritical CO2 Power Generation System
- Development of Heat Pump System Using Sea Water
- Development of the Optimization Technology for Network Plant using Unutilized Energy Resources
- Development of High Performance Heat Pump System using River Water as a Heat Source
- Development of Hybrid Heat Pump by using Industrial Waste Heat

- Optimal allocation of heat exchangers in a Supercritical carbon dioxide power cycle for waste heat recovery, Energy Conversion and Management, 2019.
- The effect of storage temperature on the performance of a thermoelectric energy storage using a transcritical CO2 cycle, Energy, 2014.
- Potential to enhance performance of seawater-source heat pump by series operation, Renewable Energy, 2014.
- A comparative study of power optimization in low-temperature geothermal heat source driven R125 transcritical cycle and HFC organic Rankine cycles, Renewable Energy, 2013.
- Power enhancement potential of a mixture transcritical cycle for a low-temperature geothermal power generation, Energy, 2012.
- Power-based performance comparison between carbon dioxide and R125 transcritical cycles for a low-grade heat source, Applied Energy, 2011.

UST 학생,학연협동과정

CO2 Capture and Utilization Technology

Development of ultra clean pretreatment key technology of organic waste-derived gas of organic waste-derived gas

- Solubility of carbon dioxide in amine-functionalized ionic liquids: Role of the anions, Chemical Engineering Journal, 193-194, 2012
- Development of pilot WGS/Muti-layer membrane for CO2 capture", Chemical Engineering Journal, 207-208, 521-525, 2012
- Adsorption of CO2 by iron-exchanged heteropolyacid Fe1.5PMo12O40 supported on mesoporous cellular foams, J Porous Materials, 23, 1207？1215, 2016
- Effects of Transition Metal Oxide Catalysts on MEA Solvent Regeneration for Post-combustion Carbon Capture Process” ACS Sustainable Chem. Eng., 5, 5862？5868, 2017
- Performance and Mechanism of Metal Oxide Catalyst-Aided Amine Solvent Regeneration, ACS Sustainable Chem. Eng., 6, 1209-12087, 2018
- Modeling of CO2 solubility of an aqueous polyamine solvent for CO2 capture, Chemical Engineering Science, 204, 140-150, 2019
- Efficient Ag2O？Ag2CO3 catalytic cycle and its role in minimizing the energy requirement of amine solvent regeneration for CO2 Capture, Sustainable Chemistry & Engineering, 7, 10234-10240, 2019
- Selective removal of SO2 from coal-fired flue gas by alkaline solvents using a membrane contactor, Chemical Engineering & Processing, 147, 107772, 2020
- Catalytic activity of facilely synthesized mesoporous HZSM？5 catalysts for optimizing the CO2 desorption rate from CO2-rich amine solutions”, Chemical Engineering Journal, 389, 123439, 2020
- Practical and inexpensive acid-activated montmorillonite catalysts for energy-efficient CO2 capture”, Green Chemistry, 22, 6328-6333, 2020

학연협동과정

- DERs control and integration
- DER/Microgrid, ESS, HIL

- Development of total operating system and advanced SW technology for multiple application ESS with improved battery lofe and control modularization
- Cyber Physical System Technologies to interconnect Dostributed Energy Resources for RE3020
- Design of power system for PEM electrolyzer with renewable energy

- Digital adaptive frequency modulation for bidirectional DC-DC converter
- Distributed control strategy for autonomous operation of hybrid ac/dc microgrid
- Single-Stage Buck-derived LED driver with improved efficiency and power factor using current path control switches
- Current sensor-less state-of-charge estimation algorithm for lithium-ion batteries utilizing filtered terminal voltage

UST 학생,학연협동과정

고온수전해-연료전지 고체산화물 셀/스택, 에너지 저장 및 변환 응용을 위한 전기화학 소재

-고체산화물 연료전지-수전해 스택 시스템 개발
-과산화수소 생산을 위한 전기화학 소재 셀 개발
-차세대 수계아연전지 응용을 위한 양극/음극 소재 개발

1) Segi Byun el at., “Ti3C2Tx MXene as a growth template for amorphous RuOx in carbon nanofiber-based flexible electrodes for enhanced pseudocapacitive energy storage” NPG Asia Materials, 15(1), 29, (2023).
2) Segi Byun et al., “Defective lithium titanate oxide with stable cycling over a wide voltage window“, Applied Surface Science, 614, 156134 (2023).
3) Segi Byun el at., “Reduced graphene oxide as a charge reservoir of manganese oxide: Interfacial interaction promotes charge storage property of MnOx-based micro-supercapacitors," Chemical Engineering Journal, 135569, (2022).
4) Segi Byun et al., “High-rate electrospun Ti3C2Tx MXene/carbon nanofiber electrodes for flexible supercapacitors," Applied Surface Science, 556, 149710 (2021).
5) Segi Byun et al., “Aging of a vanadium precursor solution: Influencing material properties and photoelectrochemical water oxidation performance of solution-processed BiVO4 photoanodes," Advanced Functional Materials, 30 (18), 1806662 (2020).

박사후연구원

- PEMFC stack and System Technology
- FVM, FEM and MD simulation

- Development of hydrogen fuel cell core technologies for short period change of electric power
- Development of fuel cell separator and stack design and manufacturing for high fluctuation of electrical power load

- Application of Metal Foam as a Flow Field for PEM Fuel Cell Stack (Fuel Cells, Volume18, Issue2, April 2018, Pages 123-128)
- Study on Polymer Electrolyte Fuel Cells with Nonhumidification Using Metal Foam in Dead-Ended Operation (Energies 2020, 13(5))
- Performance of unit PEM fuel cells with a leaf-veinsimulating flow field-patterned bipolar plate (international journal of hydrogen energy 44 (2019) 24036-24042)
- PEMFC modeling based on characterization of effective diffusivity in simulated cathode catalyst layer (international journal of hydrogen energy 42 (2017) 13226-13233)

UST 학생

SOFC cell stack, materials and system technologies, including SOC, proton conducting technoogies.

- Development of highly durable SOFC stack technology under simultaneous thermal and load cycling
- Key technologies for next-generation solid oxide fuel cells for on-site trigeneration systems in building energy networks
- Development of Metallic Interconnect Materials and Manufacturing Process for High-Temperature Fuel Cell
- Development of low-cost high-performance core materials for building application SOFCs
- The Development nof Process Technology of Highly Reliable SOFC for Distributed Power Generation

1. High-Performance Solid Oxide Fuel Cell with an Electrochemically Surface-Tailored Oxygen Electrode, Beom-Kyeong Park, Seung-Bok Lee, Tak-Hyoung Lim, Rak-Hyun Song, Jong-Won Lee*, ChemSusChem, 11, pp.2620-2627 (2018).
2. Effects of applied current density and thermal cycling on the degradation of a solid oxide fuel cell cathode, Muhammad Zubair Khan, Muhammad Taqi Mehran, Rak-Hyun Song*, Seung-Bok Lee, Tak-Hyoung Lim, International Journal of Hydrogen Energy, 43, pp. 12346-12357 (2018).
3. High-performance nanofibrous LaCoO3 perovskite cathode for solid oxide fuel cells fabricated via chemically assisted electrodeposition, Saeed Ur Rehman, Rak-Hyun Song, Tak-Hyoung Lim, Seok-Joo Park, Jong-Eun Hong, Jong-Won Lee, Seung-Bok Lee, Journal of Materials Chemistry A, 6, pp.6987-6996 (2018)
4. Efficient and robust ceramic interconnects based on a mixed-cation perovskite for solid oxide fuel cells, Je-Lin Choi, Beom-Kyeong Park, Seung-BokLee, Rak-HyunSong, Jong-WonLee, Ceramics International, 45, pp. 4902-4908 (2019).
5. Nano-fabrication of a high-performance LaNiO3 cathode for solid oxide fuel cells using an electrochemical route, Saeed Ur Rehman, Ahmad Shaur, Rak-Hyun Song, Tak-Hyoung Lim, Jong-Eun Hong, Seok-Joo Park, Seung-Bok Lee*, J. Power Sources, 429, pp. 97-104 (2019).
6. Highly durable nano-oxide dispersed ferritic stainless steel interconnects for intermediate temperature solid oxide fuel cells, Muhammad Taqi Mehran, Tae-Hun Kim, Muhammad Zubair Khan, Seung-Bok Lee, Tak-Hyoung Lim, Rak-Hyun Song*, Journal of Power Sources, 439, pp.227109- (2019).
7. Thermally self-sustaining operation of tubular solid oxide fuel cells integrated with a hybrid partial oxidation reformer using propane, Jong-Eun Hong, Mushtaq Usman, Seung-Bok Lee, Rak-Hyun Song*, Tak-Hyoung Lim*, Energy Conversion and Management, 189, pp. 132-142 (2019).
8. Performance characteristics of a robust and compact propane-fueled 150 W-class SOFC power-generation system, Muhammad Taqi Mehran, Sung-Woo Park, Jonghwan Kim, Jong-Eun Hong, Seung-Bok Lee, Seok-Joo Park, Rak-Hyun Song, Joon- Hyung Shim, Tak-Hyoung Lim*, International Journal of Hydrogen Energy, 44, pp. 6160-6171 (2019).
9. Scaling up syngas production with controllable H2/CO ratio in a highly efficient, compact, and durable solid oxide coelectrolysis cell unit-bundle, Dong-YoungLee. Muhammad Taqi Mehran, JonghwanKim, SangchoKim, Seung-BokLee, Rak-HyunSong, Eun-YongKo, Jong-EunHong, Joo-YoulHuh, Tak-HyoungLim*, Appled Energy, 257, pp. 114036 (2020).
10. Effect of applied current density on the degradation behavior of anode-supported flat-tubular solid oxide fuel cells, Muhammad Zubair Khan, Rak-Hyun Song*, Amjad Hussain, Seung-Bok Lee, Tak-Hyoung Lim, Jong-Eun Hong, Journal of the European Ceramic Society, 40, pp.1407-1417 (2020).
11. Hybrid Electrochemical Deposition Route for the Facile Nanofabrication of a Cr-Poisoning-Tolerant La(Ni,Fe)O3-δ Cathode for Solid Oxide Fuel Cells, Ahmad Shaur, Saeed Ur Rehman, Hye-Sung Kim, Rak-Hyun Song, Tak-Hyoung Lim, Jong-Eun Hong, Seok-Joo Park, and Seung-Bok Lee*, ACS Applied Materials & Interfaces, 12, pp. 5730-5738 (2020).
12. Facile surface modification of LSCF/GDC cathodes by epitaxial deposition of Sm0.5Sr0.5CoO3 via ultrasonic spray infiltration, You-Hwa Song, Saeed Ur Rehman, Hye-Sung Kim, Ho-Seon Song, Rak-Hyun Song, Tak-Hyoung Lim, Jong-Eun Hong, Seok-Joo Park, Joo-Youl Huh, Seung-Bok Lee*, Journal of Materials Chemistry A, 8, pp. 3967-3977 (2020).

학연협동과정,연수학생

Advanced rechargeable battery

- Fundamental study for the development of Gwang-ju Bioenergy R&D Center
- Technology development for RFB materials/system design and biocoal/gas production
- Development of localization technology for polymer binder core material for small type lithium ion battery positive electrode
- Mnnufacturing technology develpment on composite core materials and electrode with high energy density for ceramic rechageable batteries

- High-voltage cathode materials by combustion-based preparative approaches for Li-ion batteries application,Journal of Power sources 2020, 472, 228368
- Uniform Carbon Coated Na 3 V 2 (PO 4 ) 2 O 2x F 3-2x Nanoparticles for Sodium Ion Batteries as Cathode, ACS Sustainable Chem. Eng. 2019, 7, 23, 18826？18834
- Phase-pure Na3V2(PO4)2F3 embedded in carbon matrix through a facile polyol synthesis as a potential cathode for high performance sodium-ion batteries, Nano Research 2019, 12(4), 911-917
- Sodium manganese oxide electrodes accompanying self-ion exchange for lithium/sodium hybrid ion batteries, Electrochimica Acta, 2018, 261, 42- 48
- Monoclinic-Orthorhombic Na 1.1 Li 2.0 V 2 (PO 4 ) 3 /C Composite Cathode for Na + /Li + Hybrid-ion Batteries, Chemistry of Materials, 2017, 29,6642-6652

학연협동과정

Crystalline silicon solar cell

- High efficiency Si solar cell technology
- Technology of passivation contacted Si solar cell fabrication
- Perovskite/silicon tandem solar cell

1. Interface analysis of ultrathin SiO2 layers between c-Si substrates and phosphorus-doped poly-Si by theoretical surface potential analysis using the injection-dependent lifetime, Progress in Photovoltaics, 2020
2. Analysis of the negative charges injected into a SiO2/SiNx stack using plasma charging technology for field-effect, Progress in Photovoltaics, 2020
3. Correlation between the open-circuit voltage and recombination loss at metal-silicon interfaces of crystalline silicon solar cells, Solar Energy Materials and Solar Cells, 2020 passivation on a boron-doped silicon surface
4. Formation and suppression of hydrogen blisters in tunnelling oxide passivating contact for crystalline silicon solar cells, Scientific Reports, 2019
5. Wet Chemical Oxidation to Improve Interfacial Properties of Al2O3/Si and Interface Analysis of Al2O3/SiOx/Si Structure Using Surface Carrier Lifetime Simulation and Capacitance-Voltage Measurement, Energies, 2020
6. Comparison of passivation properties of plasma-assisted ALD and APCVD deposited Al2O3 with SiNx capping, Solar Energy Materials and Solar Cells, 2020

UST 학생,학연협동과정,연수학생

Polymer Electrolyte Membrane, Ionomer

○ Development of electrolyte membrane and membrane-electrode assembly for next-generation hydrogen electric vehicles
○ Development of Technologies for Co-electrolysis of CO2 and Low-grade By-products for the Production of Valuable Chemicals
○ Development of key materials for anion exchange membrane water electrolyzer and fuel cell
○ Research for low cost, high efficiency and stability PEM water electrolysis via low iridium loading electrode development
○ Development of large-area SOFC single cell and polymer ionomers for high temperature PEMFC with high performance and durability for hydrocarbon fuels
○ Development of materials technology for MEA of PEMFC for power generation with performance of 300mA/cm2@0.8V and durability of 8μV/h for expansion of urban power plants

○ Synthetic Approaches for Poly (Phenylene) Block Copolymers via Nickel Coupling Reaction for Fuel Cell Applications, Polymers, 2020.
○ Synthetic approaches for advanced multi-block anion exchange membranes, RSC Advances, 2019.
○ Analysis of cerium-composite polymer-electrolyte membranes during and after accelerated oxidative-stability test, Journal of Power Sources, 2018.
○ Hydrocarbon-Based Polymer Electrolyte Membranes: Importance of Morphology on Ion Transport and Membrane Stability, Chemical Reviews, 2017.
○ Nanocrack-regulated self-humidifying membranes, Nature, 2016.

박사후연구원,UST 학생

Next generation solar cells

- Perovskite based tandem solar cells
- Multi-functional thin film solar cells

“Na-Mediated Stoichiometry Control of FeS2 Thin Films: Suppression of Nanoscale S-Deficiency and Improvement of Photoresponse”, ACS Appl. Mater. Interfaces 2019, 11, 43244-43251.
“Na­Induced Conversion of a Notorious Fine­Grained Residue Layer into a Working Absorber in Solution­Processed CuInSe2 Devices”, Solar RRL (2019) 1900260.
“Role of Na in solution-processed CuInSe2 (CISe) devices: A different story for improving efficiency”, Nano Energy 48 (2018) 401-412.
“An amorphous Cu-In-S nanoparticle-based precursor ink with improved atom economy for CuInSe2 solar cells with 10.85% efficiency”, Green Chem. 19 (2017) 1268-1277.