EKC2023

[P21-EE/CM] e-Chemical production by CO2 electrolysis

Not scheduled

20m

Poster Poster(Wed)

Speaker

Hyung-Suk Oh (Korea Institute of Science and Technology)

Description

Nanoscale catalytic materials are key components of various electrochemical devices for storing and converting renewable energy, such as fuel cell, water splitting and CO₂ electrolysis system.[1-7] Their successful development and optimization require insight into the relations between atomic-scale structure of the catalytic interface and their electronic structure to improve the catalytic activity and stability. In this talk, we will highlight some of our recent work on the design and understanding of precious/non-precious metal and metal oxide catalyst materials for oxygen evolution reaction (OER) and CO₂ reduction reaction (CO₂RR). Especially, their electronic structure and electrochemical stability during operating condition were analysed by using in-situ/operando X-ray absorption spectroscopy. Based on these results, we will outline the preparation, characterization, and catalytic performance of metal and metal oxide model catalysts and discuss fundamental aspects of their structure-activity and –stability relationships.

References

[1] W. H. Lee, Y. -J. Ko, J. H. Kim, C. H. Choi, K. H. Chae, H. Kim, Y. J. Hwang, B. K. Min, P. Strasser and H. -S. Oh, Nature Communications, 2021, 12, 1
[2] W. H. Lee, C. W. Lim, E. Ban, S. Bae, J. Ko, H. -S, Lee, B. K. Min. K. -Y. Lee, J. S. Yu and H.-S. Oh, Applied Catalysis B: Environmental, 2021, 297, 120427
[3] W. H. Lee, C. W. Lim, S. Y. Lee, K. H. Chae, C. H. Choi, U. Lee, B. K. Min, Y. J. Hwang and H. -S. Oh, Nano Energy, 2021, 84, 105859
[4] W. H. Lee, Y. J. Ko, Y. Choi, S. Y. Lee, C. H. Choi, Y. J. Hwang, B. K. Min, P. Strasser and H.-S. Oh, Nano Energy, 2020, 76, 105030
[5] W. H. Lee, H. N. Nong, C. H. Choi, K. H. Chae, Y. J. Hwang, B. K. Min, P. Strasser and H.-S. Oh, Applied Catalysis B: Environmental, 2020, 269, 11882
[6] W. H. Lee, M. H. Han, U. Lee, K. H. Chae, H. Kim, Y. J. Hwang, B. K. Min, C. H. Choi and H.-S. Oh, ACS Sustainable Chemistry & Engineering, 2020, 8(37), 14071-14081
[7] H.-S. Oh, H. N. Nong, T. Reier, A. Bergmann, M. Gliech, E. Willinger, R. Schlögl, D. Teschner and P. Strasser, Journal of the American Chemical Society, 2016, 138, 12552-12563