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  English.dicp.cas.cn    Posted:2019-05-24
Lecture: Form Factor-Free, Monolithic Integrated Power Sources

Time: 24th May, 2019, 10:00 am
Venue: Room 201, Energy Fundamentals Builiding
Lecturer: Sang-Young Lee, Department of Energy Engineering, UNIST, Ulsan, 44919, Korea



Forthcoming wearable/flexible electronics with shape diversity and mobile usability have garnered significant attention as a kind of disruptive technology to drastically change our daily lives. From the viewpoint of cell design and architecture, the conventional assembly and materials have pushed the power sources to lack of variety in form factors, thus imposing formidable challenges on their integration into versatile-shaped electronic devices.

Here, we present a new class of form factor-free, printed power sources with aesthetic versatility. The printed power sources are fabricated directly on arbitrary objects of complex geometries through a variety of simple, low-cost and scalable printing processes. Their salient features include various form factors, shape conformability and monolithic integration with devices of interest. A key-enabling technology for the printed power source systems is to design battery inks, with a focus on their rheology and electrochemistry. Our particular attention is devoted to discussing effects of the battery inks on printing processability, microstructure and electrochemical performance of the resultant printed power sources. We envision that the printed power sources open a new avenue towards form factor-free/monolithic integrated power sources with object-tailored design versatility, which play a vital role in the upcoming flexible/wearable electronics, IOT and ubiquitous energy applications.


Sang-Young Lee is a professor and a head of School of Energy and Chemical Engineering at UNIST, Korea. He received BA in Chemical Engineering from Seoul National University in 1991, MS, and PhD in Chemical Engineering from KAIST in 1993 and 1997. He served as a postdoctoral fellow at Max-Planck Institute for Polymer Research from 2001 to 2002. Before joining UNIST, he worked at Batteries R&D, LG Chem. His research interests include printed power sources, flexible/wearable batteries, cellulose-based paper batteries, separators.



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