[나융] Applying spectromicroscopy to electrochemical applications : lithium ion batteries and microbial fuel cells

Speaker: Assistant Professor, Jongwoo Lim (Department of Chemistry, Seoul National University)

Date & Time: 2018년 4월 4일 (수) 17:00

Where: 융대원 D-122호

Abstract

Electrochemistry plays a significant role in energy storage and conversion technologies, such as lithium-ion batteries (LIBs) and microbial fuel cells (MFCs). LIBs generate the electrical energy by inserting lithium ions into host battery materials and forming the chemical bonds with them at the cathodes. Microorganisms in the MFCs oxidize the organic substrates (e.g. carbohydrates) and release electrons and protons. The electrons are conveyed through the external circuit as the electricity while protons conducts through the electrolyte to counter electrodes. Hence, it is crucial to understand electrochemical energy/charge transport mechanism in order to improve the overall performance.
However, the electrodes in both applications contain an ensemble of nano/microscale battery particles or bacteria, presenting the porous and heterogeneous nature. Thus conventional current-voltage measurement on these applications shows the certain limit in untangling complexity of electrochemical reactions. Here, in my talk, I will introduce the in-situ electrochemical platform developed for synchrotron-based X-ray spectromicrosocpy. Electrochemical dynamics within the individual battery particle and charge transfer mechanism between single bacterium and electrode will be presented.

Biography

학력

Ph.D Chemistry, University of California, Berkeley [2013]

B.S. Chemistry, POSTECH, Pohang, Korea [2008]

경력

Assistant Professor, Department of Chemistry, Seoul National University [2017. 3 – present]

Post-doctoral scholar, Department of Materials Science and Engineering, Stanford University (USA)[2014. 10 – 2017. 2]

Post-doctoral scholar, Department of Chemistry, University of California, Berkeley (USA)[2014. 1 – 2014. 9]

 

초청자 : 융합과학부 나노융합전공 박원철 교수 (연락처 : 031-888-9141, parkat9@snu.ac.kr )

2018-04-02|