Research Seminar Series: Soft layer method: Improving the productivity and electrical and mechanical properties of the thin carbon composite

11 April 2017 - 11:00am to 12:00pm
Ainsworth Building, Level 2, Room 202 (map ref. J17)

Dr Dongyoung Lee
Dept of Mechanical Engineering, KAIST, Korea

–  All Welcome  –


The carbon/epoxy composite is an ideal substitute for the brittle graphite bipolar plate of the Proton Exchange Membrane Fuel Cell (PEMFC) and Vanadium Redox Flow Battery (VRFB) because of its high mechanical property and productivity. However, composite bipolar plate suffered from high electrical contact resistance due to the resin-rich area formed on the surface. In order to decrease the contact resistance, “soft layer method”, which could expose bare carbon fibers on the composite surface, is developed.

The soft layer method is implemented on various types of composite: unidirectional carbon fiber composite, plain weave carbon fabric composite, spread tow carbon fabric composite, and non-woven carbon felt composite. For all types of composite, productivity, electrical property, and mechanical property are significantly improved. In addition, a composite adherend manufactured by the soft layer method shows high bonding strength without any surface treatment.


Dr Dongyoung LeeDr Dongyoung Lee is a Research Associate in the Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST).

He recently received an Outstanding National Researcher Commendation from the Ministry of Education for developing “Soft Layer Method’, an innovative composite manufacturing method that significantly increased the performance and productivity.

Also in 2016, he received a Distinguished Researcher Award from KAIST for his contribution to the commercialization of composites.

Nowadays he is traveling around the world to find global partners for the research collaboration and startup.


For more information, please contact Professor Chun Wang.

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