SiO2-containing catalyst layers for PEFCs operating under low humidity

被引：30

作者：

Inoue, Naoki ^{[3
]}

Uchida, Makoto ^{[2
]}

Watanabe, Masahiro ^{[2
]}

Uchida, Hiroyuki ^{[1
,2
]}

机构：

[1] Univ Yamanashi, Clean Energy Res Ctr, Kofu, Yamanashi 4008510, Japan

[2] Univ Yamanashi, Fuel Cell Nanomat Ctr, Kofu, Yamanashi 4008510, Japan

[3] Interdisciplinary Grad Sch Med & Engn, Kofu, Yamanashi 4008510, Japan

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2012年 / 16卷 / 01期

关键词：

Fuel cell; SiO2; Catalyst layer; PEFC; HUMIDIFYING ELECTROLYTE MEMBRANES; FUEL-CELLS; PARTICLES; PEMFC; SIO2;

D O I：

10.1016/j.elecom.2011.12.009

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The performances of PEFCs operated at low humidity have been greatly improved by the use of catalyst layers containing SiO2 particles (SiO2-CLs). The highest performance was obtained in a cell with SiO2-CLs for both the anode and the cathode, i.e., at 0.7 V. 30% RH. and 80 degrees C, the current density was 2.7 times larger than that without SiO2. It was found that the use of the SiO2-CLs increased the water content, resulting in the reduction of the ohmic resistance and the enhanced effectiveness of the Pt catalyst. The promotion of the back-diffusion of generated water from the cathode to the SiO2-containing anode certainly contributed to the improvement of the cathode performance. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：100 / 102

页数：3

共 10 条

[1] Preparation of highly dispersed SiO2 and Pt particles in Nafion® 112 for self-humidifying electrolyte membranes in fuel cells [J].

Hagihara, Hiroki ;

Uchida, Hiroyuki ;

Watanabe, Masahiro .

ELECTROCHIMICA ACTA, 2006, 51 (19) :3979-3985

[2] Improvement of low-humidity performance of PEMFC by addition of hydrophilic SiO2 particles to catalyst layer [J].

Jung, Un Ho ;

Park, Ki Tae ;

Park, Eun Hee ;

Kim, Sung Hyun .

JOURNAL OF POWER SOURCES, 2006, 159 (01) :529-532

[3] New evaluation method for the effectiveness of platinum/carbon electrocatalysts under operating conditions [J].

Lee, Myoungseok ;

Uchida, Makoto ;

Yano, Hiroshi ;

Tryk, Donald A. ;

Uchida, Hiroyuki ;

Watanabe, Masahiro .

ELECTROCHIMICA ACTA, 2010, 55 (28) :8504-8512

[4] Membrane electrode assembly with Pt/SiO2/C anode catalyst for proton exchange membrane fuel cell operation under low humidity conditions [J].

Su, Hua-Neng ;

Yang, Li-Jun ;

Liao, Shi-Jun ;

Zeng, Qiao .

ELECTROCHIMICA ACTA, 2010, 55 (28) :8894-8900

[5] Self-humidifying electrolyte membranes for fuel cells -: Preparation of highly dispersed TiO2 particles in Nafion 112 [J].

Uchida, H ;

Ueno, Y ;

Hagihara, H ;

Watanabe, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (01) :A57-A62

[6] High temperature operation of PEMFC: A novel approach using MEA with silica in catalyst layer [J].

Vengatesan, Singararn ;

Kim, Hyoung-Juhn ;

Lee, Sang-Yeop ;

Cho, EunAe ;

Ha, Heung Yong ;

Oh, In-Hwan ;

Hong, Seong-Ahn ;

Lim, Tae-Hoon .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (01) :171-178

[7] Self-humidifying polymer electrolyte membranes for fuel cells [J].

Watanabe, M ;

Uchida, H ;

Seki, Y ;

Emori, M ;

Stonehart, P .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (12) :3847-3852

[8] Polymer electrolyte membranes incorporated with nanometer-size particles of Pt and/or metal-oxides: Experimental analysis of the self-humidification and suppression of gas-crossover in fuel cells [J].

Watanabe, M ;

Uchida, H ;

Emori, M .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (17) :3129-3137

[9]

Watanabe M., 1995, U.S. Patent, Patent No. [5,472,799, 5472799]

[10] Gas diffusion electrodes containing sulfonated poly (arylene ether) ionomer for polymer electrolyte fuel cells Part 2. Improvement of the cathode performance [J].

Yoda, Takeshi ;

Shimura, Takuya ;

Bae, Byungchan ;

Miyatake, Kenji ;

Uchida, Makoto ;

Uchida, Hiroyuki ;

Watanabe, Masahiro .

ELECTROCHIMICA ACTA, 2010, 55 (10) :3464-3470

← 1 →