| Title of Invention | A PROCESS FOR PRODUCTION OF GAS DIFFUSION ELECTRODE AND THE ELECTRODE PRODUCED THEREBY |
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| Abstract | Summary The invention relates to a process for production of gas diffusion electrodes from a silver catalyzer based on PTFE substrate, where the pore system of the silvery catalyzer is filled with a wetting filling material, a dimensions table solid body with a grain size upper half of that of the silver catalyst is mixed under the silvery catalyst, this compression table mass so obtained is formed in a first calendar to a homogenous catalyst tape, in a second calendar in an electrically conductible charge eliminating material is embedded in the catalyzer tape, and between the first and second calendar a heating with the help of a heating device is carried out, in which at least part of the wetting filling material is stripped off, as well as the gas diffusion electrode produced after completion of the process (Figure 1). |
| Full Text | Patent Claims Process for production of gas diffusion electrode from a silver catalyzer/catalyst made of PTFE-Substrate, where the pore system of the silver catalyst is filled with a wetting filler material, a dimension-table solid body with a grain size upper half of the silver catalyst is mixed under the silver catalyst, this compression-table mass is so obtained is formed in a first calendar to a homogenous catalyst tape, in a second calendaring operation, an electrically conductible charge eliminator material is embedded in the catalyzer tape is thereby characterized that between the first and the second calendar a heating is done with the use of a heater device during which at least parts of the wetting filler material are stripped off. Gas diffusion electrode, produced according to process claim 1, Gas diffusion electrode ace to claim 2 - containing a matching pore structure and hydrophobecity for oxygen reduction from CO2 containing gas compound in alkaline electrolytes, especially however potash lye or sodium hydroxide solution, where - the CO2 disorption from the electrolyte far exceeds as against the CO2 absorption - A difference of pressure between the inner electrolyte filled pores and the outer electrolytes exists, which aids the disorption. - A difference of pressure is created through an especially strong capillary depression - The capillary depression is brought about through an especially hydrophobe catalyst surface - The silver is applied as catalyst and the silver catalyzer is amalgamated - The catalyzer is hydrophobed through an additional PTFE addition « |
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0227-chenp-2007-correspondnece-others.pdf
0227-chenp-2007-description(complete).pdf
227-CHENP-2007 AMENDED PAGES OF SPECIFICATION 27-01-2012.pdf
227-CHENP-2007 AMENDED CLAIMS 26-07-2013.pdf
227-CHENP-2007 AMENDED CLAIMS 27-01-2012.pdf
227-CHENP-2007 AMENDED PAGES OF SPECIFICATION 26-07-2013.pdf
227-CHENP-2007 CORRESPONDENCE OTHERS 22-07-2013.pdf
227-CHENP-2007 CORRESPONDENCE OTHERS 09-07-2013.pdf
227-CHENP-2007 CORRESPONDENCE OTHERS 11-06-2012.pdf
227-CHENP-2007 CORRESPONDENCE OTHERS 05-07-2013.pdf
227-CHENP-2007 EXAMINATION REPORT REPLY RECEIVED 26-07-2013.pdf
227-CHENP-2007 EXAMINATION REPORT REPLY RECEIVED 27-01-2012.pdf
227-CHENP-2007 FORM-13 26-07-2013.pdf
227-CHENP-2007 OTHER PATENT DOCUMENT 11-06-2012.pdf
227-CHENP-2007 AMENDED PAGES OF SPECIFICATION 25-06-2012.pdf
227-CHENP-2007 CORRESPONDENCE OTHERS 16-08-2011.pdf
227-CHENP-2007 CORRESPONDENCE OTHERS 25-06-2012.pdf
227-CHENP-2007 ENGLISH TRANSLATION 25-06-2012.pdf
227-CHENP-2007 FORM-1 25-06-2012.pdf
227-CHENP-2007 FORM-13 25-06-2012.pdf
227-CHENP-2007 FORM-3 11-06-2012.pdf
227-CHENP-2007 POWER OF ATTORNEY 11-06-2012.pdf
227-CHENP-2007 POWER OF ATTORNEY 25-06-2012.pdf
227-chenp-2007 correspondence others 20-04-2007.pdf
227-chenp-2007 form-3 20-04-2007.pdf
| Patent Number | 257077 | |||||||||||||||||||||||||||
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| Indian Patent Application Number | 227/CHENP/2007 | |||||||||||||||||||||||||||
| PG Journal Number | 36/2013 | |||||||||||||||||||||||||||
| Publication Date | 06-Sep-2013 | |||||||||||||||||||||||||||
| Grant Date | 30-Aug-2013 | |||||||||||||||||||||||||||
| Date of Filing | 19-Jan-2007 | |||||||||||||||||||||||||||
| Name of Patentee | THYSSENKRUPP UHDE GMBH | |||||||||||||||||||||||||||
| Applicant Address | FRIEDRICH-UHDE-STRASSE 15, 44141 DORTMUND, | |||||||||||||||||||||||||||
Inventors:
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| PCT International Classification Number | H01M 4/90 | |||||||||||||||||||||||||||
| PCT International Application Number | PCT/EP05/07467 | |||||||||||||||||||||||||||
| PCT International Filing date | 2005-07-09 | |||||||||||||||||||||||||||
PCT Conventions:
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