1. Department
of Chemical Engineering, College of Engineering, Hanyang University, Seoul 133-791, Republic of Korea
2. WCU
Department of Energy Engineering, College of Engineering, Hanyang University, Seoul 133-791, Republic of Korea
3. Macromolecules
and Interfaces Institute and Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
4. Fuel Cell Team 3, Hyundai-Kia Motor Company, Yongin 446-716, Republic of Korea