Proton conducting membrane, method for producing the same and fuel cell using the same

Proton conducting membrane, method for producing the same and fuel cell using the same

  • CN 1,748,265 B
  • Filed: 02/05/2004
  • Issued: 04/11/2012
  • Est. Priority Date: 02/06/2003
  • Status: Active Grant
First Claim
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1. method for preparing proton conductive membrane;

  • What have the cross-linked structure that forms through the silica covalent bond in the said proton conductive membrane and have following formula (a

         1) expression contains the sulfonic acid cross-linked structure;

    Said method comprises;

    the first step;

    Preparation contains the mixture of sulfydryl oligomer (A), and said sulfydryl oligomer (A) has sulfydryl and the reactive group that can form the Si-O-Si key through condensation reaction;

    In second step, said mixture is formed film;

    In the 3rd step, said film is carried out condensation reaction obtain cross-linked gel in the presence of catalyst;

    With, the 4th step, the said sulfydryl in the said film of oxidation, so that sulfydryl is transformed into sulfonic group;

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