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Anode electrode with carbon buffer layer for improving methanol oxidation reaction in direct methanol fuel cell

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Title
Anode electrode with carbon buffer layer for improving methanol oxidation reaction in direct methanol fuel cell
Author(s)
Yun Sik Kang; Namgee Jung; Kwang-Hyun Choi; Myeong Jae Lee; Minjeh Ahn; Yong-Hun Cho; Yung Eun Sung
Publication Date
2014-01
Journal
APPLIED SURFACE SCIENCE, v.290, no., pp.246 - 251
Publisher
ELSEVIER SCIENCE BV
Abstract
An anode electrode with the carbon buffer layer is fabricated to increase the performance of direct methanol fuel cell (DMFC). The carbon buffer layer is located in the middle of the anode catalyst layers, consists of porous carbon and Nafion ionomer. Since the porous and relatively hydrophilic carbon buffer layer absorbs methanol, the flux of the methanol solution in the anode electrode can be controlled. And methanol crossover is decreased by the effect of the carbon buffer layer. Consequently, methanol can be oxidized more efficiently and the performance of DMFC increases. Therefore, the membrane electrode assembly (MEA) with the carbon buffer layer on the anode electrode exhibits higher open circuit voltage (OCV) and maximum power density compared to those of conventional MEA. Especially with 3.0 M methanol solution, the maximum power density is increased by ∼60%. © 2013 Elsevier B.V.All rights reserved.
URI
https://pr.ibs.re.kr/handle/8788114/1161
ISSN
0169-4332
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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