期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 39, 期 30, 页码 17481-17486出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2013.11.032
关键词
Multi-walled carbon nanotube (MWCNT); Pore volume; Adhesion strength; Oxygen reduction reaction (ORR); Polymer electrolyte membrane fuel cell (PEMFC)
资金
- National Research Foundation of Korea (NRF) [K207040000 03TA050000310]
- Korean Ministry of Education, Science and Technology (MEST)
- International Cooperation program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea government Ministry of Knowledge Economy [2011T100100369]
- WCU (World Class University) Program through the National Research Foundation of Korea - Ministry of Education, Science and Technology [R31-10092]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20118510010020] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The pore structure and pore volume of catalyst layer (CL) were controlled by utilizing multi-walled carbon nanotube (MWCNT). According to the increase in MWCNT ratio in CL, the primary pore (below 100 nm) volume concerning with the phosphoric acid penetration to the reaction site was decreased and the secondary pore (approximately 1 gm) volume relating with oxygen gas transportation was increased, respectively. However, the excessive addition of MWCNT was detrimental to electrochemical properties due to the difficulty of phosphoric acid penetration to the reaction site and the opposite influx of phosphoric acid to the secondary pore. Furthermore, the adhesion strength between CL and gas diffusion layer (GDL) was improved by only 10% addition of MWCNT. Therefore, it is suggested that the ratio of MWCNT in CL can be key role for obtaining the optimized pore volume, enhanced adhesion strength, and good performance of polymer electrolyte membrane fuel cell (PEMFC). Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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