462954 Porous Structure Based Electrocatalysts for High Performance Fuel Cells

Wednesday, November 16, 2016: 3:15 PM
Continental 1 (Hilton San Francisco Union Square)
Jinwoo Lee, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Korea, The Republic of

In this work, we systematically studied the effect of pore size and doping site position of metal-free catalysts in MEAs using well-defined ordered mesoporous carbon system to achieve highly active metal-free catalysts in MEA levels. At first, we synthesized mesosporous phosphorus doped ordered mesoporous carbon with large pore (~38 nm) by block copolymer assisted co-assembly. Then, addition nitrogen doping was conducted with 2 different conditions using different sized nitrogen precursors. Finally, we fabricated and tested MEAs that employ metal-free catalysts as a cathode catalyst. As a result, the MEA performance of synthesized catalyst with precisely controlled doping sites considerably exceeds that of previously reported metal-free catalysts.


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