Effect of cathode micro-porous layer on performance of anion-exchange membrane direct ethanol fuel cells

被引：38
作者：
Li, Y. S. [1 ]
Zhao, T. S. [1 ]
Xu, J. B. [1 ]
Shen, S. Y. [1 ]
Yang, W. W. [1 ]
机构：
[1] Hong Kong Univ Sci & Technol, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 04期
关键词：
Direct ethanol fuel cell; Anion exchange membrane; Water crossover; Micro-porous layer; Gas-diffusion layer; Carbon nanotubes; DIFFUSION LAYER; CATALYST LAYERS; ALKALINE MEDIA; GAS-DIFFUSION; OXIDATION; ELECTROCATALYSTS; PALLADIUM; WATER; ELECTROOXIDATION; NANOPARTICLES;
D O I：
10.1016/j.jpowsour.2010.09.077
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：
The effect of a cathode micro-porous layer that is composed of carbon powder or carbon nanotubes on cell performance is investigated Polarization curves together with the respective anode and cathode potentials are measured The results show that the cathode potential can be significantly improved with adding a hydrophobic micro-porous layer between the cathode catalyst layer and the gas-diffusion layer The increased performance with the cathode micro-porous layer is mainly attributed to the fact that the cathode water flooding can be alleviated as a result of the reduced water crossover which consequently facilitates the transport of oxygen to the catalyst layer It is also found that a crack-free micro-porous layer made of carbon nanotubes gives a much higher cathode potential compared with a micro-porous layer composed of carbon powder (C) 2010 Elsevier B V All rights reserved
引用
收藏
页码：1802 / 1807
页数：6
相关论文
共 27 条
  • [1] Alkaline direct alcohol fuel cells
    Antolini, E.
    Gonzalez, E. R.
    [J]. JOURNAL OF POWER SOURCES, 2010, 195 (11) : 3431 - 3450
  • [2] Palladium-Based Electrocatalysts for Alcohol Oxidation in Half Cells and in Direct Alcohol Fuel Cells
    Bianchini, Claudio
    Shen, Pei Kang
    [J]. CHEMICAL REVIEWS, 2009, 109 (09) : 4183 - 4206
  • [3] Selective oxidation of ethanol to acetic acid in highly efficient polymer electrolyte membrane-direct ethanol fuel cells
    Bianchini, Claudio
    Bambagioni, Valentina
    Filippi, Jonathan
    Marchionni, Andrea
    Vizza, Francesco
    Bert, Paolo
    Tampucci, Alessandro
    [J]. ELECTROCHEMISTRY COMMUNICATIONS, 2009, 11 (05) : 1077 - 1080
  • [4] Structure and chemical composition of supported Pt-Sn electrocatalysts for ethanol oxidation
    Jiang, LH
    Sun, GQ
    Sun, SG
    Liu, JG
    Tang, SH
    Li, HQ
    Zhou, B
    Xin, Q
    [J]. ELECTROCHIMICA ACTA, 2005, 50 (27) : 5384 - 5389
  • [5] Nanostructured gas diffusion and catalyst layers for proton exchange membrane fuel cells
    Kannan, Arunachala M.
    Veedu, Vinod P.
    Munukutla, Lakshmi
    Ghasemi-Nejhad, Mehrdad N.
    [J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 2007, 10 (03) : B47 - B50
  • [6] Ag and Ag-Mn nanowire catalysts for alkaline fuel cells
    Kostowskyj, M. A.
    Kirk, D. W.
    Thorpe, S. J.
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (11) : 5666 - 5672
  • [7] A study on the characteristics of the diffusion layer thickness and porosity of the PEMFC
    Lee, HK
    Park, JH
    Kim, DY
    Lee, TH
    [J]. JOURNAL OF POWER SOURCES, 2004, 131 (1-2) : 200 - 206
  • [8] Cathode flooding behaviour in alkaline direct ethanol fuel cells
    Li, Y. S.
    Zhao, T. S.
    Chen, R.
    [J]. JOURNAL OF POWER SOURCES, 2011, 196 (01) : 133 - 139
  • [9] Measurements of water uptake and transport properties in anion-exchange membranes
    Li, Y. S.
    Zhao, T. S.
    Yang, W. W.
    [J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (11) : 5656 - 5665
  • [10] Effect of polymer binders in anode catalyst layer on performance of alkaline direct ethanol fuel cells
    Li, Y. S.
    Zhao, T. S.
    Liang, Z. X.
    [J]. JOURNAL OF POWER SOURCES, 2009, 190 (02) : 223 - 229
123