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      Anti-flooding cathode catalyst layer for high performance PEM fuel cell

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      anti-flooding cathode for high performance PEMFC after revision.pdf (85.99Kb)
      Author
      Li, Aidan
      Chan, Siew Hwa
      Nguyen, Nam-Trung
      Date of Issue
      2009
      School
      School of Mechanical and Aerospace Engineering
      Version
      Accepted version
      Abstract
      Water management in cathode catalyst layer (CCL) plays an important role in the PEM fuel cell operation. A novel anti-flooding CCL is developed with the addition of oxygen permeable and hydrophobic dimethyl silicone oil (DSO) into the catalyst layer (CL) to improve the water balance and oxygen transport within the cathode. With the addition of 0.5 mg/cm2 DSO in the CCL, the ability of water management has been enhanced greatly compared to that with a normal cathode. Electrochemical impedance spectroscopy has been employed to characterize the electrochemical behavior of the single fuel cell. The results show that the increased hydrophobicity of the CCL by DSO modification effectively expels water out of the voids of CCL. In addition, DSO in the CCL enhances oxygen accessibility to the CCL, thus improving the performance of the PEM fuel cell significantly
      Subject
      DRNTU::Engineering::Mechanical engineering
      Type
      Journal Article
      Series/Journal Title
      Electrochemistry communications
      Rights
      © 2009 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Electrochemistry Communications, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: DOI: [http://dx.doi.org.ezlibproxy1.ntu.edu.sg/10.1016/j.elecom.2009.02.022].
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      http://dx.doi.org.ezlibproxy1.ntu.edu.sg/10.1016/j.elecom.2009.02.022
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