|
|
| Type |
Symposium |
| Area |
Recent Trends in Energy Harvesting/Storage Systems |
| Room No. |
Room 324A |
| Time |
THU 16:10-: |
| Code |
PHYS1-2 |
| Subject |
Nanoscale spatiodynamics of lithium-ion battery primary particles |
| Authors |
Jongwoo Lim
Division of Chemistry, Seoul National University, Korea |
| Abstract |
Electrochemistry plays a significant role in energy storage and conversion technologies, such as lithium-ion batteries, fuel cells, and microbial fuel cells. Because of porous and heterogeneous nature of the electrodes in these applications, the conventional current-voltage measurement shows certain limit in untangling complexity of electrochemical reactions (charge transfer, mass transport, chemical reactions and so on). Here in my talk, I will introduce the in-situ electrochemical platform combined with synchrotron-based X-ray spectromicroscopy which visualizes nanoscale charge transfer and electrochemical reactions of individual battery particles.[1,2] Within individual particles, spatial variations in the electrochemical reaction rate control lithium ion insertion pathway. I will also discuss how this technique is expansively applied to other electrochemical systems in my group.
[1] J. Lim et al “Origin and Hysteresis of Li Compositional Spatio-Dynamics within Battery Primary Particles”, Science, 2016, 353, 566-571
[2] Y. Li et al “Fluid-enhanced Surface Diffusion Controls Intraparticle Phase Transformations” Nature Materials, 2018 in press
|
| E-mail |
jwlim@snu.ac.kr |
|
122nd General Meeting of the KCS