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- Title
Highly Durable Direct Methanol Fuel Cell with Double-Layered Catalyst Cathode.
- Authors
Liu, Jing; Liu, Chun-Tao; Zhao, Lei; Wang, Zhen-Bo
- Abstract
Polymer electrolyte membrane (PEM) is one of the key components in direct methanol fuel cells. However, the PEM usually gets attacked by reactive oxygen species during the operation period, resulting in the loss of membrane integrity and formation of defects. Herein, a double-layered catalyst cathode electrode consisting of Pt/CeO2-C as inner catalyst and Pt/C as outer catalyst is fabricated to extend the lifetime and minimize the performance loss of DMFC. Although the maximum power density of membrane electrode assembly (MEA) with catalyst cathode is slightly lower than that of the traditional one, its durability is significantly improved. No obvious degradation is evident in the MEA with double-layered catalyst cathode within durability testing. These results indicated that Pt/CeO2-C as inner cathode catalyst layer greatly improved the stability of MEA. The significant reason for the improved stability of MEA is the ability of CeO2 to act as free-radical scavengers.
- Subjects
DIRECT methanol fuel cells; METAL catalysts; CATHODES; PROTON exchange membrane fuel cells; REACTIVE oxygen species; CRYSTAL defects
- Publication
Journal of Nanomaterials, 2015, Vol 2015, p1
- ISSN
1687-4110
- Publication type
Article
- DOI
10.1155/2015/963173