BROWSE

Related Scientist

Researcher

나노입자 연구단
나노입자 연구단
more info

Prism-patterned Nafion membrane for enhanced water transport in polymer electrolyte membrane fuel cell

Cited 9 time in webofscience Cited 0 time in scopus
112 Viewed 1 Downloaded
Title
Prism-patterned Nafion membrane for enhanced water transport in polymer electrolyte membrane fuel cell
Author(s)
Kim S.M.; Kang Y.S.; Chi-Yeong Ahn; Jang S.; Minhyoung Kim; Yung-Eun Sung; Yoo S.J.; Choi M.
Publication Date
2016-06
Journal
JOURNAL OF POWER SOURCES, v.317, no., pp.19 - 24
Publisher
ELSEVIER SCIENCE BV
Abstract
Here, we report a simple and effective strategy to enhance the performance of the polymer electrolyte membrane fuel cell by imprinting prism-patterned arrays onto the Nafion membrane, which provides three combined effects directly related to the device performance. First, a locally thinned membrane via imprinted micro prism-structures lead to reduced membrane resistance, which is confirmed by electrochemical impedance spectroscopy. Second, increments of the geometrical surface area of the prism-patterned Nafion membrane compared to a flat membrane result in the increase in the electrochemical active surface area. Third, the vertically asymmetric geometry of prism structures in the cathode catalyst layer lead to enhanced water transport, which is confirmed by oxygen gain calculation. To explain the enhanced water transport, we propose a simple theoretical model on removal of water droplets existing in the asymmetric catalyst layer. These three combined effects achieved via incorporating prism patterned arrays into the Nafion membrane effectively enhance the performance of the polymer electrolyte membrane fuel cell. © 2016 Published by Elsevier B.V
URI
https://pr.ibs.re.kr/handle/8788114/3149
ISSN
0378-7753
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
24.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse