题目：Development of Membrane Electrode Assembly for Fuel Cell Vehicles
报告人：Prof. Dr. Chanho Pak
Prof. Dr. Chanho Pak graduate from (1986-1990) Department of Chemistry, KAIST, Daejon, Korea and obtained his Ph.D. degree in 1995 at Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejon, Korea. 1995-2001, he first worked as a visiting researcher at Kansai Research Institute (KRI), Kyoto, Japan and then, he went to College of Chemistry, University of California at Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA as a Post-doctoral researcher for two years after working as a senior researcher at Samsung Advanced Institute of Technology (SAIT), Giheung-gu, Yongin-si Gyeonggi-do, Korea. In 2001 -2013, he worked at Samsung Advanced Institute of Technology (SAIT), Samsung as a senior researcher and a master. 2013-2016, he was the vice president of Samsung SDI Co. Ltd., Giheung-gu, Yongin-si, Gyeonggi-do, Korea. From 2013 to now, he was named assistant professor at Graduate Program of Energy Technology, IIT, Gwangju Institute of Science and Technology, Buk-gu, Gwangju, Korea. Prof. Dr. Chanho Pak mainly worked on oxygen storage materials, combustion catalyst for PM and selective reduction catalyst for NOx , mesoporous molecular sieves and catalyst related material in fuel cell. Until now, he has published more than 150 peer-reviewed publications in international journals including review articles, peer-reviewed conference proceedings and 67 national patents and 120 foreign patents.
Recently, new energy vehicle (NEV) in the China as an eco-car, which is an environmentally friendly car, have been attracted great attention due to in a view of reduction of carbon dioxide emission and pollution of particulate matter from the vehicles. Among the NEV, fuel cell vehicle (FCV) have been developing very long time and now deploying in the real life due to the zero-emission of the greenhouse gasses, high energy efficiency, long operation range over 500 km and quick refuel time under 10 min. Despite the significant improvement of fuel cell systems for over the decades, FCV has some challenges for expanding the market penetration such as high cost, lack of durability and hydrogen infrastructure. Fuel cell system contains a stack, which is composed of the hundreds of membrane electrode assembly (MEA) and bipolar plates, and other parts to supply the air and hydrogen, adjust the relative humidity, and control the electric signals.
The MEA is a core component of the stack for making the electricity using hydrogen and oxygen in the air. Thus, the development of advanced MEA is very important because the power density and energy efficiency of stack and fuel cell systems depend on the MEA performance. In addition, the performance of MEA decreases gradually during the operation that mainly stems from the degradation of the electrolyte membrane, catalyst and carbon support. To address the challenges as mentioned earlier, the development of electrode technology including the catalyst in the MEA is needed to improve the performance and the durability.
In this presentation, the development examples for improving the performance and durability of MEA will be presented. The application of a nano-dispersed ionomer solution, the interfacial bonding layer and durable graphitized carbon support to the electrode in the practical MEA will be discussed.