|
Type |
Symposium |
Area |
Frontier of Materials Chemistry: Application Fields |
Room No. |
Room 322 |
Time |
THU 16:20-: |
Code |
MAT1-2 |
Subject |
Electrocatalysts in Fuel Cells |
Authors |
Gu-Gon Park Fuel Cell Laboratory, Korea Institute of Energy Research, Korea |
Abstract |
Fuel cell technology has just started to be commercialized, and the market is rapidly growing mainly in cogeneration and automotive applications. In order to expand the market in earnest, R & D has been focused on the cost and the durability. The US Department of Energy estimates that the electrocatalyst portion of the entire fuel cell stack will account for about 48% in case of the annual production of 500,000 fuel cell vehicles.
Two research directions are proposed to reduce the cost of electrocatalysts. One is to reduce the absolute amount of the precious metal, and the other is to increase the activity of the catalyst itself. To maximize the mass activity of the catalyst various approaches have been made through surface characterization and shape control (Dealloying, nano-segregation, nanoframe, octahedra, etc.). Considering mass production, now core shell type electrocatalyst is considered as a realistic alternative.
In this presentation, we will share the prospect of current and future catalyst technologies based on a basic understanding of electrocatalysts. |
E-mail |
gugon@kier.re.kr |
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