Physicochemical properties of Aquivion/fluorine grafted sepiolite electrolyte membranes for use in PEMFC

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作   者：

Woo, Sahng Hyuck;  Taguet, Aurelie;  Otazaghine, Belkacem;  Mosdale, Annette;  Rigacci, Arnaud;  Beauger, Christian; 

作者机构：

F-38600 Fontaine;  6 Ave Clavieres;  CS 10207 Rue Claude Daunesse;  14 Rue Jean Pierre Timbaud;  IMT Mines Ales;  C2MA;  PSL Univ;  Ctr Proc Renewable Energy & Energy Syst PERSEE;  F-06904 Sophia Antipolis;  F-30319 Ales;  France;  Espace Vouillands 2;  MINES ParisTech;  Symbio; 

关键词：

Sepiolite nanofiber;  Proton exchange membrane fuel cell (PEMFC);  Aquivion;  Perfluorosulfonic acid (PFSA);  Fluorination; 

期刊名称：

Electrochimica Acta

i s s n：

0013-4686

年卷期：

2019 年 319 卷

页   码：

933-946

页   码：

摘   要：

This study proposes a novel sepiolite-based Aquivion electrolyte membrane which could be operated at low relative humidity. In the study, it was discovered that the functionalization of sepiolite with fluorinated groups (i.e., -C7F15), named SEP-F, helps its dispersion in the composite membrane, compared with the use of natural sepiolite. The Aquivion/SEP-F composite membrane showed increased water uptake, thermo-mechanical and chemical stability as well as proton conductivity and decreased swelling compared with commercially available Nafion HP and pristine Aquivion. Their behavior in single cell MEA testing conditions was also assessed. Aquivion/SEP-F composite membrane can be an interesting alternative for low relative humidity operation of PEMFC (proton exchange membrane fuel cell). (C) 2019 Elsevier Ltd. All rights reserved.