BROWSE

Related Scientist

Researcher

나노입자 연구단
나노입자 연구단
more info

A hierarchical cathode catalyst layer architecture for improving the performance of direct methanol fuel cell

Cited 2 time in webofscience Cited 0 time in scopus
98 Viewed 1 Downloaded
Title
A hierarchical cathode catalyst layer architecture for improving the performance of direct methanol fuel cell
Author(s)
Sungjun Kim; Ji Eun Park; Wonchan Hwang; Yong-Hun Cho; Yung-Eun Sung
Publication Date
2017-07
Journal
APPLIED CATALYSIS B-ENVIRONMENTAL, v.209, no., pp.91 - 97
Publisher
ELSEVIER SCIENCE BV
Abstract
We report the fabrication of a hierarchical cathode catalyst layer (CL) for application in direct methanol fuel cells (DMFCs). The hierarchical CL, comprised of Pt black as the inner layer and Pt/C as the outer layer, has appropriate structural properties for DMFC cathode. The inner CL with compact structure decreases the CL thickness and prevent Pt sites from methanol contamination, and the cathode outer CL with porous structure increase the electrochemical active surface area. Consequently, the hierarchical cathode CL is able to offset the adverse effect of methanol crossover on the cathode performance by enhancing the Pt catalyst utilization for oxygen reduction reactions (ORR). Therefore, the newly developed membrane electrode assembly (MEA) can maintain the high ORR activity of the cathode catalysts despite the methanol crossover. At a high methanol concentration (3 M), it shows high maximum power density (0.156 W cm−2) despite only 1.0 mg cm−2 of Pt in the cathode CL. © 2017 Elsevier B.V
URI
https://pr.ibs.re.kr/handle/8788114/4209
ISSN
0926-3373
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
15. Kim_et_al-2017-Applied_Catalysis_B.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