Cobalt coated electrodes for high efficiency PEM fuel cells by plasma sputtering deposition

被引：5

作者：

Tang, Zhe ^{[1
]}

Poh, Chee Kok ^{[2
]}

Chin, Kok Chung ^{[3
]}

Chua, Daniel H. C. ^{[1
]}

Lin, Jianyi ^{[2
]}

Wee, Andrew T. S. ^{[3
]}

机构：

[1] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117574, Singapore

[2] Inst Chem & Engn Sci, Singapore 627833, Singapore

[3] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2009年 / 39卷 / 10期

关键词：

Proton exchange membrane fuel cell; Membrane electrode assembly; Sputtering; Cobalt; PLATINUM LOADING ELECTRODES; OXYGEN REDUCTION; PERFORMANCE; TECHNOLOGY; CATALYSTS; NI; CO;

D O I：

10.1007/s10800-009-9885-3

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Proton exchange membrane (PEM) fuel cell electrodes coated with ultra-thin Co layer have been successfully fabricated via plasma sputter-deposition. In order to investigate the influence of Co layers on the oxygen reduction reaction, a series of Co layers with different nominal thickness have been deposited into the cathode-membrane interface. The polarization curves confirmed visible enhancement in cell performance when a 5 nm Co layer on cathode gave rise to a high current density of 750 mA cm(-2) at 0.6 V. Scanning electron microscopy showed that the sputter deposited 5 nm Co layer formed nanosized island structures on the porous electrode, while electrochemical impedance spectra confirmed that a reduction in the total impedance of the electrode led to the improvement of the membrane electrode assembly (MEA) performance.

引用

页码：1821 / 1826

页数：6

共 26 条

[21] Enhancement of the electroreduction of oxygen on Pt alloys with Fe, Ni, and Co
Toda, T
Igarashi, H
Uchida, H
Watanabe, M
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (10) : 3750 - 3756
[22] TORU N, 2005, J ELECTROCHEM SOC, V152, pA2316
[23] A MICROELECTRODE STUDY OF OXYGEN REDUCTION AT THE PLATINUM/RECAST-NAFION FILM INTERFACE
URIBE, FA
SPRINGER, TE
GOTTESFELD, S
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1992, 139 (03) : 765 - 773
[24] Vielstich W., 2003, Handbook of fuel cells. Fundamentals, technology, applications
[25] SPUTTERED FUEL-CELL ELECTRODES
WEBER, MF
MAMICHEAFARA, S
DIGNAM, MJ
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1987, 134 (06) : 1416 - 1419
[26] THIN-FILM CATALYST LAYERS FOR POLYMER ELECTROLYTE FUEL-CELL ELECTRODES
WILSON, MS
GOTTESFELD, S
[J]. JOURNAL OF APPLIED ELECTROCHEMISTRY, 1992, 22 (01) : 1 - 7

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