期刊
JOURNAL OF POWER SOURCES
卷 266, 期 -, 页码 107-113出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.05.014
关键词
High temperature proton exchange; membrane fuel cell; Membrane electrode assembly; Catalyst coating membrane; Pt utilization
资金
- Hydrogen and Fuel Cell Technologies RDI Programme (HySA) - Department of Science and Technology in South Africa [KP1-S01]
- NRF Free-standing Postdoctoral Fellowship [88347]
In this work, membrane electrode assemblies (MEAs) prepared by catalyst coating membrane (CCM) method are investigated for reduced platinum (Pt) loading and improved Pt utilization of high temperature proton exchange membrane fuel cell (PEMFC) based on phosphoric acid (PA)-doped poly(2,5-benzimidazole) (AB-PBI) membrane. The results show that CCM method exhibits significantly higher cell performance and Pt-specific power density than that of MEAs prepared with conventional gas diffusion electrode (GDE) under a low Pt loading level. In-suit cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) show that the MEAs prepared by the CCM method have a higher electrochemical surface area (ECSA), low cell ohmic resistance and low charge transfer resistance as compared to those prepared with GDEs at the same Pt loading. (C) 2014 Elsevier B.V. All rights reserved.
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