Nb-TiO2 supported Pt cathode catalyst for polymer electrolyte membrane fuel cells

被引：194

作者：

Park, Kyung-Won ^{[1
]}

Seol, Kwang-Su ^{[1
]}

机构：

[1] Soongsil Univ, Dept Chem & Environm Engn, Seoul 156743, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 09期

关键词：

polymer electrolyte membrane fuel cell; cathode electrocatalyst; oxygen reduction; oxide support; TiO2;

D O I：

10.1016/j.elecom.2007.06.027

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The Nb-doped TiO2 nanostructure (Nb-TiO2) was prepared as a support of metal catalyst in polymer electrolyte membrane fuel cells. Using the Nb-TiO2 nanostructure support, we prepared the Nb-TiO2 supported catalyst. The Nb-TiO2 supported Pt catalyst (Pt/NbTiO2) showed the well dispersion of Pt catalysts (similar to 3 nm) on the Nb-TiO2 nanostructure supports (similar to 10 nm). The Pt/Nb-TiO2 showed an excellent catalytic activity for oxygen reduction compared with carbon supported Pt cathode catalyst. The enhanced catalytic activity of Pt/Nb-TiO2 in electrochemical half cell measurement may be mainly due to well dispersion of Pt nanoparticles on Nb-TiO2 nanosized supports. In addition, from XANES spectra of Pt L edge obtained with the supported catalysts, the improved catalytic activity of Pt/Nb-TiO2 for oxygen reduction may be caused by an interaction between oxide support and metal catalyst. (c) 2007 Published by Elsevier B.V.

引用

页码：2256 / 2260

页数：5

共 36 条

[1] Influence of Nafion loading in the catalyst layer of gas-diffusion electrodes for PEFC [J].

Antolini, E ;

Giorgi, L ;

Pozio, A ;

Passalacqua, E .

JOURNAL OF POWER SOURCES, 1999, 77 (02) :136-142

[2] Oxygen reduction reaction on ruthenium and rhodium nanoparticles modified with selenium and sulfur [J].

Cao, DX ;

Wieckowski, A ;

Inukai, J ;

Alonso-Vante, N .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (05) :A869-A874

[3] A nonelectrochemical reductive deposition of ruthenium adatoms onto nanoparticle platinum: anode catalysts for a series of direct methanol fuel cells [J].

Cao, DX ;

Bergens, SH .

ELECTROCHIMICA ACTA, 2003, 48 (27) :4021-4031

[4] Development of supported bifunctional electrocatalysts for unitized regenerative fuel cells [J].

Chen, GY ;

Bare, SR ;

Mallouk, TE .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (08) :A1092-A1099

[5] An oxidation-resistant indium tin oxide catalyst support for proton exchange membrane fuel cells [J].

Chhina, H. ;

Campbell, S. ;

Kesler, O. .

JOURNAL OF POWER SOURCES, 2006, 161 (02) :893-900

[6] Boosting fuel cell performance with a semiconductor photocatalyst:: TiO2/Pt-Ru hybrid catalyst for methanol oxidation [J].

Drew, K ;

Girishkumar, G ;

Vinodgopal, K ;

Kamat, PV .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (24) :11851-11857

[7] Photochemical preparation of poly(N-vinyl-2-pyrrolidone)-stabilized platinum colloids and their deposition on titanium dioxide [J].

Einaga, H ;

Harada, M .

LANGMUIR, 2005, 21 (06) :2578-2584

[8] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].

FUJISHIMA, A ;

HONDA, K .

NATURE, 1972, 238 (5358) :37-+

[9] Photoelectrochemical cells [J].

Grätzel, M .

NATURE, 2001, 414 (6861) :338-344

[10] Nanoporous TiO2-supported bimetallic catalysts for methanol oxidation in acidic media [J].

Hepel, Maria ;

Kumarihamy, Indee ;

Zhong, C. J. .

ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (09) :1439-1444

← 1 2 3 4 →