Pt-WOx electrode structure for thin-film fuel cells

被引：55

作者：

Park, KW ^{[1
]}

Ahn, KS ^{[1
]}

Choi, JH ^{[1
]}

Nah, YC ^{[1
]}

Kim, YM ^{[1
]}

Sung, YE ^{[1
]}

机构：

[1] Kwangju Inst Sci & Technol, Dept Mat Sci & Engn, Kwangju 500712, South Korea

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 05期

关键词：

D O I：

10.1063/1.1497707

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An electrode structure consisting of two phases of Pt and WOx for use in thin-film fuel cells was designed and fabricated using a cosputtering system with a Pt metal and a tungsten oxide target. The coexistence of a polycrystalline Pt nanosized phase and an amorphous tungsten oxide phase in the electrode layer was confirmed by transmission electron microscopic images and x-ray diffraction data. In addition, compared with a Pt thin-film electrode, the two-phase electrode of Pt and WOx showed excellent performance for the devices because of the improved activity of the Pt metallic phase and the spill-over effect of porous tungsten oxides. (C) 2002 American Institute of Physics.

引用

页码：907 / 909

页数：3

共 9 条

[1]

HEARTH MP, 1996, PLATIN MET REV, V40, P150

[2] HIGH PERFORMANCE PLATINUM ACTIVATED TUNGSTEN OXIDE FUEL CELL ELECTRODES [J].

HOBBS, BS ;

TSEUNG, ACC .

NATURE, 1969, 222 (5193) :556-&

[3] Miniature methanol/air polymer electrolyte fuel cell [J].

Kelley, S.C. ;

Deluga, G.A. ;

Smyrl, W.H. .

2000, IEEE, Pennington, NJ, United States (03)

[4] Novel proton exchange membrane thin-film fuel cell for microscale energy conversion [J].

Morse, JD ;

Jankowski, AF ;

Graff, RT ;

Hayes, JP .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 2000, 18 (04) :2003-2005

[5] Chemical and electronic effects of Ni in Pt/Ni and Pt/Ru/Ni alloy nanoparticles in methanol electrooxidation [J].

Park, KW ;

Choi, JH ;

Kwon, BK ;

Lee, SA ;

Sung, YE ;

Ha, HY ;

Hong, SA ;

Kim, H ;

Wieckowski, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (08) :1869-1877

[6] Combinatorial electrochemistry: A highly parallel, optical screening method for discovery of better electrocatalysts [J].

Reddington, E ;

Sapienza, A ;

Gurau, B ;

Viswanathan, R ;

Sarangapani, S ;

Smotkin, ES ;

Mallouk, TE .

SCIENCE, 1998, 280 (5370) :1735-1737

[7]

TAYLOR EJ, 1992, J ELECTROCHEM SOC, V139, P45

[8]

WIECKOWSKI A, 1999, INTERFACIAL ELECTROC, pCH44

[9]

Witham CK, 2000, ELECTROCHEM SOLID ST, V3, P497, DOI 10.1149/1.1391190

← 1 →