PTFE-bonded Raney nickel hydrogen electrodes in alkaline fuel cells.

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概要

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• Polytetrafluoroethylene (PTFE)-bonded Raney nickel hydrogen electrodes have been prepared and their polarizations have been measured at 62 °C, using 6 M KOH (1 M=1 mol dm<SUP>−3</SUP>) as an electrolyte. The electrodes were reproducible in polarization characteristics from electrode to electrode. The polarization resistance was found to be 0.29 Ω cm<SUP>−2</SUP> for the electrode loaded with a 48-mg cm<SUP>−2</SUP> catalyst. The limiting current density was 600 mA cm<SUP>−2</SUP> for the electrode loaded with a 45.4-mg cm<SUP>−2</SUP> catalyst. The influences of the pressure of the press machine and of the PTFE content on the polarizations have been investigated. The polarization resistance decreases with the catalyst loading in the manner to be expected from the reaction mechanism of the gas diffusion through electrolyte film. An experimental evidence for this reaction mechanism has been obtained by measuring the polarization of an electrode of a triple-layered structure containing a silver powder layer.

• 公益社団法人 日本化学会の論文

著者

• Kenjo Tadao

  Department of Applied Science for Energy, Faculty of Engineering, Muroran Institute of Technology

関連論文

• The polarization characteristics and the thickness of the catalyst layers in fuel cell electrodes.
• PTFE-bonded Raney nickel hydrogen electrodes in alkaline fuel cells.

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