세미나안내

[2015 02 02] 특별세미나 (BK21PLUS)

Electrically and thermally conductive polymers for renewable energy harvest and lightweight thermal management

MSE Graduate Students and Researchers

관리자 | 2015.02.04 10:15 | 조회 2496


Reception: MSE Graduate Students and Researchers

Reference: MSE Professors

Subject:  MSE/BK21PLUS Special Seminar_Dr. Gun-Ho Kim

 

 

Date: 2015 2. 4 (WED), 16:00 ~ 17:15

Place: Engineering Building, Room. #202

Title: Electrically and thermally conductive polymers for renewable energy harvest

           and lightweight thermal management

Speaker: : Dr. Gun-Ho Kim (University of Michigan)

Host of a Seminar: Prof. Tae-Woo Lee

 

Abstract:

: Polymeric materials are inexpensive and easily manufacturable, having various engineering assets such as mechanical toughness and low weight. These advantages of polymers have led to numerous efforts to enhance their ability of converting heat to electricity for large-area waste heat recovery (i.e., thermoelectrics) and transferring heat for lightweight thermal management.

 In 2013, we broke the previous world record for the thermoelectric efficiency in an organic semiconductor. Our quantum mechanical calculations suggest the importance of minimizing dopant volume to maximizing the charge carrier mobility and hence thermoelectric performance of organic semiconductors. By using this unprecedented strategy of minimizing dopant volume, we were able to vary thermoelectric parameters in an unique manner. Our high thermoelectric performance polymer will potentially deliver thermoelectric paint with enormous versatility, which can generate electricity from numerous waste heat sources (e.g., car engine hood, airplane cabin). In the latter part of the talk, engineering of heat transport in amorphous polymers will be discussed. We rationalized the molecular structure required to form a thermally conductive intermolecular pathway, which was experimentally demonstrated in commercially available polymers. Under certain conditions, thermal conductivity in typical spin-cast polymer films was observed to exceed 1.5 W/m-K, which is approximately an order of magnitude larger than that of other amorphous polymers. 


Department of Materials Science and Engineering / MSE BK21+


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