Comparison between Nafion® and a Nafion® zirconium phosphate nano-composite in fuel cell applications

被引：36

作者：

Bauer, F. ^{[1
]}

Willert-Porada, M. ^{[1
]}

机构：

[1] Univ Bayreuth, Chair Mat Proc, D-95447 Bayreuth, Germany

来源：

FUEL CELLS | 2006年 / 6卷 / 3-4期

关键词：

composite membranes; fuel cell operation; layer phosphate; mechanical stability; proton conductivity;

D O I：

10.1002/fuce.200500217

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A comparative investigation of the electrical, mechanical, and chemical behaviour of zirconium phosphate-Nafion((R)) composite membranes and Nation((R)) by means of ex-situ measurements, as well as with fuel cell operation, reveals a slight reduction of ionic conductivity, a significant improvement of mechanical stability, and increased water retention for the composite materials. The overall efficiency at 130 degrees C is increased during direct methanol fuel cell (DMFC) operation because the reduction in the ionic conductivity is overcompensated for by the decrease in methanol crossover. With H-2 as the fuel, the slight reduction in overall efficiency corresponds to the decrease in ionic conductivity. The dimensional stability of the membrane and the membrane electrode assembly (MEA) is significantly improved for operating temperatures above 100 degrees C. A model for the microstructure-property relation for PFSA-Zr(HPO4)(2) (.) n H2O composite membranes is presented, based on the experimental results from membranes with varying filler contents and distributions, obtained through different synthesis routes. It is aimed at the improvement of water distribution in the membrane upon fuel cell operation.

引用

页码：261 / 269

页数：9

共 20 条

[11] CRYSTALLOGRAPHY AND STRUCTURE OF ALPHA-ZIRCONIUM BIS(MONOHYDROGEN ORTHOPHOSPHATE) MONOHYDRATE [J].

CLEARFIELD, A ;

SMITH, GD .

INORGANIC CHEMISTRY, 1969, 8 (03) :431-+

[12] THE PREPARATION OF CRYSTALLINE ZIRCONIUM PHOSPHATE AND SOME OBSERVATIONS ON ITS ION EXCHANGE BEHAVIOUR [J].

CLEARFIELD, A ;

STYNES, JA .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1964, 26 (01) :117-129

[13]

Colomban P, 1992, CHEM SOLID STATE MAT, V2

[14] Advanced materials for improved PEMFC performance and life [J].

Curtin, DE ;

Lousenberg, RD ;

Henry, TJ ;

Tangeman, PC ;

Tisack, ME .

JOURNAL OF POWER SOURCES, 2004, 131 (1-2) :41-48

[15]

Doyle M, 2003, HDB FUEL CELLS FUNDA, P351

[16] Enhancement of the protonic conductivity of alpha-zirconium phosphate by composite formation with alumina or silica [J].

Glipa, X ;

Leloup, JM ;

Jones, DJ ;

Roziere, J .

SOLID STATE IONICS, 1997, 97 (1-4) :227-232

[17] Approaches and recent development of polymer electrolyte membranes for fuel cells operating above 100 °C [J].

Li, QF ;

He, RH ;

Jensen, JO ;

Bjerrum, NJ .

CHEMISTRY OF MATERIALS, 2003, 15 (26) :4896-4915

[18]

PANCHENKO A, 2004, THESIS U STUTTGART S

[19] Emerging membranes for electrochemical systems - Part II. High temperature composite membranes for polymer electrolyte fuel cell (PEFC) applications [J].

Savadogo, O .

JOURNAL OF POWER SOURCES, 2004, 127 (1-2) :135-161

[20] WATER-UPTAKE BY AND TRANSPORT THROUGH NAFION(R) 117 MEMBRANES [J].

ZAWODZINSKI, TA ;

DEROUIN, C ;

RADZINSKI, S ;

SHERMAN, RJ ;

SMITH, VT ;

SPRINGER, TE ;

GOTTESFELD, S .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1993, 140 (04) :1041-1047

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