A fully spray-coated fuel cell membrane electrode assembly using Aquivion ionomer with a graphene oxide/cerium oxide interlayer

JOURNAL OF POWER SOURCES

卷:351

Article

Breitwieser, Matthias^1,2  Bayer, Thomas^3,4  Buechler, Andreas⁵  Zengerle, Roland^1,2,6  Lyth, Stephen M.^3,4,7  Thiele, Simon^1,2,6 

[1] Univ Freiburg, IMTEK Dept Microsyst Engn, Lab MEMS Applicat, Georges Koehler Allee 103, D-79110 Freiburg, Germany

[2] Hahn Schickard, Georges Koehler Allee 103, D-79110 Freiburg, Germany

[3] Kyushu Univ, Ctr Coevolut Social Syst, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

[4] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

[5] Fraunhofer Inst Solar Energy Syst, Heidenhofstr 2, D-79110 Freiburg, Germany

[6] Univ Freiburg, FIT, Georges Koehler Allee 105, D-79110 Freiburg, Germany

[7] Univ Sheffield, Dept Mech Engn, Energy 2050, Sheffield S10 2TN, S Yorkshire, England

关键词: PEMFC;    Direct membrane deposition;    Aquivion;    Cerium oxide;    Graphene oxide;    Membrane degradation;    Spray coating;   

DOI  :  10.1016/j.jpowsour.2017.03.085

来源: Elsevier

【 摘 要 】

A novel multilayer membrane electrode assembly (MEA) for polymer electrolyte membrane fuel cells (PEMFCs) is fabricated in this work, within a single spray-coating device. For the first time, direct membrane deposition is used to fabricate a PEMFC by spraying the short-side-chain ionomer Aquivion directly onto the gas diffusion electrodes. The fully sprayed MEA, with an Aquivion membrane 10 gm in thickness, achieved a high power density of 1.6 W/cm(2) for H-2/air operation at 300 kPa(abs). This is one of the highest reported values for thin composite membranes operated in H2/air atmosphere. By the means of confocal laser scanning microscopy, individual carbon fibers from the gas diffusion layer are identified to penetrate through the micro porous layer (MPL), likely causing a low electrical cell resistance in the range of 150 Omega cm(2) through the thin sprayed membranes. By spraying a 200 nm graphene oxide/cerium oxide (GO/Ce0(2)) interlayer between two layers of Aquivion ionomer, the impact of the electrical short is eliminated and the hydrogen crossover current density is reduced to about 1 mA/cm(2). The peak power density of the interlayer-containing MEA drops only by 10% compared to a pure Aquivion membrane of similar thickness. (C) 2017 Elsevier B.V. All rights reserved.

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