Hybrid Nafion-silica membranes doped with heteropolyacids for application in direct methanol fuel cells

被引：260

作者：

Staiti, P ^{[1
]}

Aricò, AS ^{[1
]}

Baglio, V ^{[1
]}

Lufrano, F ^{[1
]}

Passalacqua, E ^{[1
]}

Antonucci, V ^{[1
]}

机构：

[1] CNR, Inst Transformat & Storage Energy, I-98126 Messina, Italy

来源：

SOLID STATE IONICS | 2001年 / 145卷 / 1-4期

关键词：

phosphotungstic acid; silicotungstic acid; composite nafion membranes; direct methanol fuel cells;

D O I：

10.1016/S0167-2738(01)00919-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nafion-silica composite membranes doped with phosphotungstic and silicotungstic acids have been investigated for application in direct methanol fuel cells at high temperature (145 degreesC). The phosphotungstic acid-based membrane showed better electrochemical characteristics at high current densities with respect to both silicotungstic acid-modified membrane and silica-Nafion membrane. A maximum power density of 400 mW cm(-2) was obtained at 145 degreesC in the presence of oxygen feed, whereas the maximum power density in the presence of air feed was approaching 250 mW cm(-2), The results indicate that the addition of inorganic hygroscopic materials to recast Nation extends the operating range of a direct methanol fuel cell. Operation at high temperatures significantly enhances the kinetics of methanol oxidation. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：101 / 107

页数：7

共 10 条

[1] Investigation of a direct methanol fuel cell based on a composite Nafion®-silica electrolyte for high temperature operation [J].

Antonucci, PL ;

Aricò, AS ;

Cretì, P ;

Ramunni, E ;

Antonucci, V .

SOLID STATE IONICS, 1999, 125 (1-4) :431-437

[2]

Aricò AS, 1998, ELECTROCHEM SOLID ST, V1, P66, DOI 10.1149/1.1390638

[3] METHANOL OXIDATION ON CARBON-SUPPORTED PT-SN ELECTRODES IN SILICOTUNGSTIC ACID [J].

ARICO, AS ;

KIM, H ;

SHUKLA, AK ;

RAVIKUMAR, MK ;

ANTONUCCI, V ;

GIORDANO, N .

ELECTROCHIMICA ACTA, 1994, 39 (05) :691-700

[4] CO and CO/H2 electrooxidation on carbon supported Pt-Ru catalyst in phosphotungstic acid (H3PW12O40) electrolyte [J].

Aricò, AS ;

Modica, E ;

Ferrara, I ;

Antonucci, V .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 1998, 28 (09) :881-887

[5] OXYGEN REDUCTION KINETICS IN PHOSPHOTUNGSTIC ACID AT LOW-TEMPERATURE [J].

GIORDANO, N ;

ARICO, AS ;

HOCEVAR, S ;

STAITI, P ;

ANTONUCCI, PL ;

ANTONUCCI, V .

ELECTROCHIMICA ACTA, 1993, 38 (13) :1733-1741

[6] High performance fuel cell based on phosphotungstic acid as proton conducting electrolyte [J].

Giordano, N ;

Staiti, P ;

Hocevar, S ;

Arico, AS .

ELECTROCHIMICA ACTA, 1996, 41 (03) :397-403

[7] Synthesis and characterization of proton-conducting materials containing dodecatungstophosphoric and dodecatungstosilic acid supported on silica [J].

Staiti, P ;

Freni, S ;

Hocevar, S .

JOURNAL OF POWER SOURCES, 1999, 79 (02) :250-255

[8]

STAITI P, 1998, J NEW MAT ELECTR SYS, V1, P1

[9]

Tazi B, 1997, NEW MATERIALS FOR FUEL CELL AND MODERN BATTERY SYSTEMS II, P864

[10] Parameters of PEM fuel-cells based on new membranes fabricated from Nafion®, silicotungstic acid and thiophene [J].

Tazi, B ;

Savadogo, O .

ELECTROCHIMICA ACTA, 2000, 45 (25-26) :4329-4339

← 1 →