Methanol conditioning for improved performance of formic acid fuel cells

被引:78
作者
Ha, S
Rice, CA
Masel, RI [1 ]
Wieckowski, A
机构
[1] Univ Illinois, Dept Chem Engn, Urbana, IL 61801 USA
[2] Univ Illinois, Dept Chem, Urbana, IL 61801 USA
关键词
methanol conditioning; formic acid fuel cells; membrane electrolyte assembly;
D O I
10.1016/S0378-7753(02)00453-6
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
This paper considers the effect of methanol pretreatment on the performance of a direct formic acid fuel cell (DFAFC). We find that conditioning of the cell in methanol results in a substantial increase in current. The current at 60 degreesC increases from 95 to 320 mA/cm(2) at 0.3 V. The maximum power density increases from 33 to 119 mW/cm(2). The cell resistance decreases from 0.37 to 0.32 Omega cm(2). CO stripping experiments show that the catalyst is not being greatly affected by these changes. Our interpretation of the data is that the anode layer of membrane electrolyte assembly (MEA) undergoes some change during the methanol conditioning. The change improves the performance. (C) 2002 Elsevier Science B.V. All tights reserved.
引用
收藏
页码:655 / 659
页数:5
相关论文
共 10 条
  • [1] Electrocatalysis in direct methanol fuel cells: in-situ probing of PtRu anode catalyst surfaces
    Dinh, HN
    Ren, XM
    Garzon, FH
    Zelenay, P
    Gottesfeld, S
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2000, 491 (1-2): : 222 - 233
  • [2] JIA NY, 2001, Patent No. 2362500
  • [3] In-situ STM characterisation of the surface morphology of platinum single crystal electrodes as a function of their preparation
    Kibler, LA
    Cuesta, A
    Kleinert, M
    Kolb, DM
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2000, 484 (01): : 73 - 82
  • [4] The effect of CO adsorption at room temperature on the structure of supported Pt particles
    Mojet, BL
    Miller, JT
    Koningsberger, DC
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (14): : 2724 - 2734
  • [5] REN X, 1995, P ELECTROCHEM SOC, V95, P252
  • [6] RICE C, IN PRESS J POWER SOU
  • [7] RICE C, 2002, P 40 C POW SOURC, P242
  • [8] RICE C, IN PRESS COMP PERFOR
  • [9] A nanoparticle catalyst with superior activity for electrooxidation of formic acid
    Waszczuk, P
    Barnard, TM
    Rice, C
    Masel, RI
    Wieckowski, A
    [J]. ELECTROCHEMISTRY COMMUNICATIONS, 2002, 4 (07) : 599 - 603
  • [10] WASZCZUK P, IN PRESS ELECTROCHEM