HYDROGEN PRODUCTION
Using renewable heat and electricity to split water and produce green hydrogen
ON-GOINIG WORKS
THERMOCHEMICAL REDOX CYCLE COMBINED WITH A BOTTOMING SYSTEM
Exploring the system design of thermochemical redox cycle to achieve better efficiency.
Adding a bottoming cycle to thermochemical redox cycle to improve the system efficiency.
Simulation and techno-economic analysis for proposed systems.
Working with MIT RGD lab and SUSTech (2019-).
Yehyung(예형) is working on this work.
OPTIMAL MATERIAL FOR THERMOCHEMICAL REDOX CYCLE
From system analysis, the optimal thermodynamic properties for material used in thermochemical redox cycle was derived.
Conducting density functional theory (DFT) study to find the material that satisfies the thermodynamic properties derived.
Funded by NRF, 2021-2024.
Solid oxide cell degisn optimization
Designing the flow channel for solid oxide cell according to its purpose.
Using COMSOL simulation model to find the optimum design and verifying the design with experimental test station.
Funded by KRRI, 2023-2025.
Huiju(희주) and Soojeong(수정) are working on this work.
SOLID OXIDE CELL WITH THERMAL BATTERY
Developing highly efficient hydrogen and power production system using reversible solid oxide cell and thermal battery.
Using hot blast stove as a thermal battery.
Funded by K-Water, 2022-2023.
Hyewon(혜원) is working on this work.
PREVIOUS WORKS
Polymer electrolyte membrane electrolysis model development
Developed electrochemical simulation model of polymer electrolyte membrane cell.
Model was constructed based on MATLAB/SIMULINK.
It was funded by KIMM.
Dohyung Jang , Wonjae Choi, Hyun-Seok Cho, Won Chul Cho, Chang Hee Kim, Sanggyu Kang
Journal of Power Sources, 2021. DOI: 10.1016/j.jpowsour.2021.230106
Developed electrochemical simulation model of alkaline electrolysis cell.
Model was constructed based on MATLAB/SIMULINK.
It was funded by KIMM.
Aniket S. Patankar, Xiao-Yu Wu, Wonjae Choi, Harry L. Tuller, Ahmed F. Ghoniem
Journal of Solar Energy Engineering, 2022. DOI: 10.1115/IMECE2021-69716
A novel Reactor Train system for efficient conversion of solar thermal energy to hydrogen was proposed.
This system is capable of recovering thermal energy from redox materials.
The Reactor Train is comprised of several identical reactors arranged in a closed loop and cycling between reduction and oxidation steps.
In between these steps, the reactors undergo solid heat recovery in a radiative counterflow heat exchanger.
A heat recovery effectiveness of 75–82% with a train consisting of 56 reactors and a cycle time of 84 minutes.
