Membranes produced by plasma enhanced chemical vapor deposition technique for low temperature fuel cell applications

JOURNAL OF POWER SOURCES

卷:195

Article

Ennajdaoui, Aboubakr^1,2  Roualdes, Stephanie¹  Brault, Pascal³  Durand, Jean¹ 

[1] Univ Montpellier 2, Inst Europeen Membranes, ENSCM, CNRS, F-34095 Montpellier 5, France

[2] MID Dreux Innovat, F-28500 Vernouillet, France

[3] Univ Orleans, Grp Rech Energet Milieux Ionises, F-45067 Orleans, France

关键词: PEMFC;    Plasma polymerization;    Styrene;    Trifluoromethane sulfonic acid;    Thermal stability;    Transport properties;   

DOI  :  10.1016/j.jpowsour.2009.06.090

来源: Elsevier

【 摘 要 】

A plasma polymerization process using a continuous glow discharge has been implemented for preparing proton conducting membranes from trifluoromethane sulfonic acid and styrene. The chemical and physical structure of plasma membranes has been investigated using FTIR and SEM. The films are homogeneous with a good adhesion on commercial gas diffusion layer (E-Tek(R)). Their deposition rate can be increased with increasing flow rate and input power. The thermogravimetric analysis under air of plasma polymers has showed a thermal stability up to 140 degrees C. Compared to the pulsed glow discharge studied in a previous paper, the continuous glow discharge has enabled to enhance the proton conductivity of membranes by a factor 3 (up to 1.7 mS cm(-1)). Moreover, the low methanol permeability (methanol diffusion coefficient down to 5 x 10(-13) m(2) s(-1)) of membranes has been confirmed by this study. In an industrial context, a reactor prototype has been developed to manufacture by plasma processes all active layers of fuel cell cores to be integrated in original compact PEMFC or DMFC. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free