Atomic-layer-deposited TiO2 on cathode gas diffusion layer for low humidity operation in hydrogen fuel cells

被引：27

作者：

Choun, Myounghoon ^{[2
]}

Chung, Sangho ^{[2
]}

Jeon, Hongrae ^{[2
]}

Uhm, Sunghyun ^{[1
,3
]}

Lee, Jaeyoung ^{[1
,2
]}

机构：

[1] Gwangju Inst Sci & Technol, Ertl Ctr Electrochem & Catalysis, RISE, Kwangju 500712, South Korea

[2] Sch Environm Sci & Technol, Electrochem React & Technol Lab, Kwangju 500712, South Korea

[3] Inst Adv Engn, Adv Mat & Proc Ctr, Yongin 449863, Kyounggi Do, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2012年 / 24卷

关键词：

Hydrogen fuel cells; Gas diffusion layer; Titanium dioxide; Atomic layer deposition; Low humidification; HUMIDIFYING ELECTROLYTE MEMBRANES; HUMIDIFICATION; PEMFC; PARTICLES; CATALYST;

D O I：

10.1016/j.elecom.2012.08.022

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

External humidifying system is generally needed for the activation of membrane and catalyst layer, but it is continuously considered as barrier to commercialize polymer electrolyte hydrogen fuel cells (PEFCs). In this study, ultrathin layer of hydrophilic TiO2 was coated on hydrophobic microporous layer of gas diffusion layer (GDL) at the cathode to maintain the power performance of PEFCs under extremely low cathode humidification operation. The TiO2 layers of various cycles were precisely deposited on GDL using atomic layer deposition to minimize both the losses of electrical conductivity and surface area of microporous layer. We observed that TiO2 coated GDL resulted in higher performance than as-received GDL at low humidity operation. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：108 / 111

页数：4

共 13 条

[1] Novel gas diffusion layer with water management function for PEMFC [J].

Chen, J ;

Matsuura, T ;

Hori, M .

JOURNAL OF POWER SOURCES, 2004, 131 (1-2) :155-161

[2] Development of a novel hydrophobic/hydrophilic double micro porous layer for use in a cathode gas diffusion layer in PEMFC [J].

Chun, Jeong Hwan ;

Park, Ki Tae ;

Jo, Dong Hyun ;

Lee, Ji Young ;

Kim, Sang Gon ;

Park, Sun Hee ;

Lee, Eun Sook ;

Jyoung, Jy-Young ;

Kim, Sung Hyun .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (14) :8422-8428

[3]

Ciureanu M, 2003, J NEW MAT ELECTR SYS, V6, P163

[4] 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

[5] SiO2-containing catalyst layers for PEFCs operating under low humidity [J].

Inoue, Naoki ;

Uchida, Makoto ;

Watanabe, Masahiro ;

Uchida, Hiroyuki .

ELECTROCHEMISTRY COMMUNICATIONS, 2012, 16 (01) :100-102

[6] Influence of Hydrophilic and Hydrophobic Double MPL Coated GDL on PEFC Performance without Cathode Humidification [J].

Kitahara, T. ;

Nakajima, H. ;

Konomi, T. .

POLYMER ELECTROLYTE FUEL CELLS 10, PTS 1 AND 2, 2010, 33 (01) :1089-1097

[7] Hydrophilic and hydrophobic double microporous layer coated gas diffusion layer for enhancing performance of polymer electrolyte fuel cells under no-humidification at the cathode [J].

Kitahara, Tatsumi ;

Nakajima, Hironori ;

Mori, Kyohei .

JOURNAL OF POWER SOURCES, 2012, 199 :29-36

[8] Atomic layer deposition of TiO2 nanotubes and its improved electrostatic capacitance [J].

Lee, Jongmin ;

Ju, HyungKuk ;

Lee, Jae Kwang ;

Kim, Ho Sung ;

Lee, Jaeyoung .

ELECTROCHEMISTRY COMMUNICATIONS, 2010, 12 (02) :210-212

[9] Self-humidification of a PEM fuel cell using a novel Pt/SiO2/C anode catalyst [J].

Su, Huaneng ;

Xu, Leimin ;

Zhu, Huaping ;

Wu, Yanni ;

Yang, Lijun ;

Liao, Shijun ;

Song, Huiyu ;

Liang, Zhenxing ;

Birss, Viola .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (15) :7874-7880

[10] Partially Fluorinated Metal Oxide Catalysts for a Friedel-Crafts-type Reaction of Dichlorofluoromethane with Tetrafluoroethylene [J].

Tanuma, T. ;

Okamoto, H. ;

Ohnishi, K. ;

Morikawa, S. ;

Suzuki, T. .

CATALYSIS LETTERS, 2010, 136 (1-2) :77-82

← 1 2 →