Performance of an aluminate cement/graphite conductive composite bipolar plate

被引:21
作者
Shen Chunhui [1 ]
Mu, Pan [1 ]
Wu Qiong [1 ]
Yuan Runzhang [1 ]
机构
[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Hubei, Peoples R China
关键词
graphite; aluminate cement; mould pressing; fuel cell; bipolar plate;
D O I
10.1016/j.jpowsour.2005.12.047
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Aluminate cement/graphite conductive composite bipolar plates were prepared by mould pressing at room temperature. The effects of the graphite content, the mould pressing pressure and mould pressing time on the electrical conductivity and the flexural strength of composite are discussed. The electrical conductivity and the flexural strength of the composite bipolar plates with 60 wt.% graphite content, prepared with a mould pressing pressure of 5 MPa for 10 min, is > 100 S cm(-1) and 20 MPa, respectively and can be improved by optimizing the mould pressing conditions, especially mould pressing time. The water content of the composite bipolar plate with different graphite contents was also investigated. The water content of the composite bipolar plate is about 6 wt.% with a graphite content of 60 wt.%. This composite bipolar plate contains capillary pores and has hydrophilicity, which is different from other composite bipolar plates. Therefore, it possesses an inner humidifying function and can use the water produced at the cathode for humidifying the proton exchange membrane during the operation of a PEMFC. In addition, the H-2 permeability of the composite bipolar plate is low. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:1078 / 1083
页数:6
相关论文
共 14 条
[1]  
Barbir F, 1999, J NEW MAT ELECT SYST, V2, P197
[2]  
BRAUN JC, 2001, Patent No. 6180275
[3]   Operating proton exchange membrane fuel cells without external humidification of the reactant gases - Fundamental aspects [J].
Buchi, FN ;
Srinivasan, S .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (08) :2767-2772
[4]   Characteristics of composite bipolar plates for polymer electrolyte membrane fuel cells [J].
Cho, EA ;
Jeon, US ;
Ha, HY ;
Hong, SA ;
Oh, IH .
JOURNAL OF POWER SOURCES, 2004, 125 (02) :178-182
[5]   Development of polymer electrolyte membrane fuel cell stack [J].
Dhathathreyan, KS ;
Sridhar, P ;
Sasikumar, G ;
Ghosh, KK ;
Velayutham, G ;
Rajalakshmi, N ;
Subramaniam, CK ;
Raja, M ;
Ramya, K .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1999, 24 (11) :1107-1115
[6]   Injection moulded low cost bipolar plates for PEM fuel cells [J].
Heinzel, A ;
Mahlendorf, F ;
Niemzig, O ;
Kreuz, C .
JOURNAL OF POWER SOURCES, 2004, 131 (1-2) :35-40
[7]   Bipolar plates for PEM fuel cells: A review [J].
Hermann, A ;
Chaudhuri, T ;
Spagnol, P .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2005, 30 (12) :1297-1302
[8]  
Koncar G.J., 1999, U.S. Patent, Patent No. [US5942347A, 5942347]
[9]   Preparation, electrical, mechanical and thermal properties of composite bipolar plate for a fuel cell [J].
Kuan, HC ;
Ma, CCM ;
Chen, KH ;
Chen, SM .
JOURNAL OF POWER SOURCES, 2004, 134 (01) :7-17
[10]  
LIYIN L, 2001, J LUOYANG TECHNOL CO, V11, P9