Seminar & Colloquium
[콜로퀴엄: 9월 21일(수), 오후 5시] 이화여자대학교 화학나노과학부, 김동하 교수
Title
고성능 에너지 저장 소자를 위한 플라즈모닉스 개척 연구 (Pioneering plasmonics for high energy storage)
Speaker
이화여자대학교 화학나노과학부, 김동하 교수
Education
- 1996 - 2000 Seoul National University (SNU) Seoul, Korea
Ph.D. in Department of Fiber and Polymer Science (Specialty in Polymers)
Advisor: Professor Won Ho Jo
Thesis: An Analysis of Interfacial Characteristics between Polymer and Metal
- 1992 - 1996 Seoul National University (SNU) Seoul, Korea
Masters of Science in Department of Fiber and Polymer Science
Advisor: Professor Won Ho Jo
Thesis: The Miscibility and Mechanical Properties of Blends of Polystyrene with Polyethylene-based
Ionomer
- 1992 - 1994 Military Service
- 1987 - 1991 Seoul National University (SNU) Seoul, Korea
Bachelor of Science in Department of Textile Engineering
Professional experiences
- February 2021 Ewha Womans University Seoul, Korea
current Director
Basic Sciences Research Institute (Priority Research Institute)
- November 2020 Ewha Womans University Seoul, Korea
current Director
NanobioㆍEnergy Materials Center (National Research Facilities and Equipment Center)
- September 2020 Ewha Womans University Seoul, Korea
July 2021 Director
Institute of Smart Nanohybrid Materials
- February 2020 Ewha Womans University Seoul, Korea
October 2020 Director
Institute of NanoBio Technology
- October 2019 Ewha Womans University Seoul, Korea
August 2020 Director
Institute of Clean Energy Materials
- February 2019 Ewha Womans University Seoul, Korea
January 2021 Department Head
Department of Chemistry and Nano Science
- March 2018 Korea Institute of Science and Technology Seoul, Korea
August 2018 Visiting Researcher
- May 30, 2017 Royal Society of Chemistry Cambridge, UK
current Fellow
- January 2017 Fudan University Shanghai, China
November 2018 Senior Visiting Scholar
State Key Laboratory of Molecular Engineering of Polymers,
Collaborative Innovation Center of Polymers and Polymer Composite Materials,
Department of Macromolecular Science, Fudan University
- March 2015 Ewha Womans University Seoul, Korea
current Ewha Fellow
- March 2015 Korea Basic Science Institute Seoul, Korea
current Invited Researcher
Functional Interface Science Group, Division of Analytical Science & Technology, Seoul, Korea
Western Seoul Center
- March 2015 Ewha Womans University Seoul, Korea
current Professor
Department of Chemistry and Nano Science
- March 2014 Ewha Womans University Seoul, Korea
current Adjunct Professor
Division of Chemical Engineering and Materials Science
- March 2010 Ewha Womans University Seoul, Korea
February 2015 Associate Professor
Department of Chemistry and Nano Science
- February 2013 Massachusetts Institute of Technology Boston, USA
January 2014 Visiting Scholar
Electrochemical Energy Laboratory
Department of Mechanical Engineering and Materials Science and Engineering
Advisor: Prof. Yang Shao-Horn
- March 2006 Ewha Womans University Seoul, Korea
February 2010 Assistant Professor
Division of Nano Science and Department of Chemistry
- November 2005 Samsung Electronics Co., Ltd. Yongin, Korea
January 2006 Senior Scientist, Semiconductor R&D Center
Memory Division, Semiconductor Business
- June 2005 Institute of Materials Research and Engineering (IMRE) Singapore
July 2005 Visiting Scientist, Micro and Nano Systems Cluster
- May 2003 Max Planck Institute (MPI) for Polymer Research Mainz, Germany
October 2005 Postdoctoral Scholar, Materials Science Department
Advisor: Professor Wolfgang Knoll
- August 2000 University of Massachusetts at Amherst Amherst, USA
April 2003 Postdoctoral Scholar, Department of Polymer Science and Engineering
Advisor: Professor Thomas P. Russell
- March 2000 Seoul National University Seoul, Korea
August 2000 Postdoctoral Scholar, Nano-Bio Molecular Engineering Laboratory
School of Materials Science and Engineering
Advisor: Professor Won Ho Jo
| Date | Wednesday, September 21st, 2022
| Time | 17:00 ~
| Venue | #201, Bldg. 43-1 (43-1동 201호)
[Abstract]
Conventional plasmonics have been recognized as a promising platform that may premise unique values in the context of light-matter interactions. [1-2] Researchers have extended the potential of plasmonics to unconventional domains, among which plasmon-enhanced electrocatalysis has shown promising evidence. [3] Here we investigate the promise of plasmonic materials with unique light-interacting properties (localized surface plasmon resonance) for emerging application in energy storage devices with Li-O2 battery as model platform. Au nanoparticles (NPs) at increasing contents/sizes are incorporated on conventional Ketjen Black (KB) cathodes, with preliminary half-cell measurements underlining the promise of LSPR-generated hot-carriers on the O2 electrochemistry. The illuminated battery with facile Li2O2 formation/decomposition, small Li2O2 particles, and suppressed side-products unlocks a round-trip efficiency boost. This enhancement is even more striking with continuous cycling, with a 680 mV-overpotential suppression against KB after 30 cycles. Comparatively, dark conditions reveal negligible Au-driven catalytic effects, whereas LSPR-induced local heat effects are ruled out upon meticulous assessment of the product selectivity in cells at increasing temperatures. [4] This contribution is the seminal approach to disentangle catalytic effects and plasmon relaxation pathways over practical carbon-based cathodes for high-energy storage.
References
[1] S. T. Kochuveedu, Y. H. Jang, D. H. Kim,* Chem. Soc. Rev. 2013, 42(21), 8467 ? 8493.
[2] Y. H. Jang,§ Y. J. Jang,§ S. Kim, L. N. Quan, K. Chung, D. H. Kim,* Chem. Rev. 2016, 116(24), 14982 ? 15034 (§: equal contribution).
[3] C. H. Choi, K. Chung, T. T. H. Nguyen, D. H. Kim,* ACS Energy Lett. 2018, 3, 1415 ? 1433.
[4] K. Chae, M. Kim, F. M. Mota,* D. H. Kim,* “Disentangling Plasmonic and Catalytic Effects in a Practical Plasmon-enhanced Lithium?Oxygen Battery”, J. Power Sources, in press.
| Host | Prof. Woong-Ryeol Yu (880-9096)