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A new tubular cathode support for Direct Ethanol Fuel Cell (DEFC) was prepared using mesocarbon microbead (MCMB) and graphite, exhibiting good comprehensive performance.

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Abstract

A new tubular cathode support for Direct Ethanol Fuel Cell (DEFC) was prepared by the gelcasting process using mesocarbon microbead(MCMB) and graphite as the main raw materials. The effects of different graphite doping ratios on tensile strength, bending strength, crushing strength, volume resistivity and shrinkage rate for the prepared tubular cathode support were studied by experimental test. The result showed that the prepared tubular cathode support had very good comprehensive performance. The tubular cathode support with 10% graphite exhibits the best performance such as bending strength 25MPa and resistivity30µΩ•m, and it satisfied the DEFC cathode working conditions and performance requirements.

Key findings

  • Tensile strength, bending strength, crushing strength, volume resistivity, and shrinkage rate were studied for the prepared tubular cathode support.
  • The best performance was achieved with 10% graphite doping ratio, exhibiting bending strength of 25MPa and resistivity of 30µΩ•m.
  • The prepared tubular cathode support satisfied the DEFC cathode working conditions and performance requirements.

Keywords

CathodeGraphiteUltimate tensile strengthShrinkageComposite materialRaw material

Identifiers

DOI
10.4028/www.scientific.net/amr.415-417.2345
Journal
Advanced Materials Research
Year
2011