DK3035423T3 - Fremgangsmåde til fremstilling af elektrodekatalysator, elektrodekatalysator, sammensætning til dannelse af gasdiffusionselektrode, gasdiffusionselektrode, membranelektrodeenhed (mea) og brændselscellestak - Google Patents
Fremgangsmåde til fremstilling af elektrodekatalysator, elektrodekatalysator, sammensætning til dannelse af gasdiffusionselektrode, gasdiffusionselektrode, membranelektrodeenhed (mea) og brændselscellestak Download PDFInfo
- Publication number
- DK3035423T3 DK3035423T3 DK15768710.4T DK15768710T DK3035423T3 DK 3035423 T3 DK3035423 T3 DK 3035423T3 DK 15768710 T DK15768710 T DK 15768710T DK 3035423 T3 DK3035423 T3 DK 3035423T3
- Authority
- DK
- Denmark
- Prior art keywords
- electrode catalyst
- electrode
- liquid
- catalyst precursor
- chlorine
- Prior art date
Links
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
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Claims (11)
1. Fremgangsmåde til fremstilling afen elektrodekatalysator med en kerne-skal-struktur indbefattende en bærer (2), en kernedel (4), der er dannet på bæreren (2), og en skaldel (5), der er udformet til at dække mindst en del af en overflade af kernedelen (4), kendetegnet ved, at fremstillingsfremgangsmåden omfatter: et første trin (1) med at tilbageholde en væske indeholdende ultrarent vand, et reduktionsmiddel og en elektrodekatalysatorprecursor i mindst en fase med en temperatur, der er forudbestemt inden for et område på 10 til 95 °C, i en forudbestemt retentionstid, hvilken elektrodekatalysatorprecursor er fremstillet under anvendelse af et materiale, der indeholder klor (Cl)-arter og udviser en koncentration af klor (Cl)-arter på mere end 2.600 ppm målt ved røntgenfluorescens (XRF)-spektroskopi; et første trin med at tørre dispergeringsvæsken opnået efter det første trin, til opnåelse af elektrodekatalysatorprecursorpulveret indeholdt i væsken opnået efter det første trin; et andet trin (2) med at præparere en første væske med elektrodekataly-satorprecursorpulveret opnået efter det første tørringstrin, dispergeret i ultrarent vand, ved at tilsætte ultrarent vand til elektrodekatalysatorprecursorpulve-ret opnået efter det første tørringstrin; et tredje trin (3) med at præparere en anden væske ved filtrering og vask af elektrodekatalysatorprecursoren indeholdt i den første væske med ultrarent vand, og derefter vaske gentagne gange, indtil den elektriske ledeevne (p) af filtratet opnået efter vask er blevet ikke højere end en første forudbestemt værdi udvalgt fra et område på ikke højere end 100 pS/cm, målt ved JlS-stan-dardtestmetoden (JIS K0552), således at elektrodekatalysatorprecursoren, som er indeholdt i væsken, der udviser en elektrisk ledeevne (p), der ikke er højere end den første forudbestemte værdi, dispergeres i ultrarent vand; og et andet trin med at tørre den anden væske.
2. Fremgangsmåde til fremstilling ifølge krav 1 afen elektrodekatalysator med en kerne-skal-struktur indbefattende en bærer (2), en kernedel (4), der er dannet på bæreren (2), og en skaldel (5), der er udformet til at dække mindst en del af en overflade af kernedelen (4), kendetegnet ved, at fremstillingsfremgangsmåden omfatter: et første trin' (1') med at tilbageholde en væske indeholdende ultrarent vand, en hydrogenholdig gas og en elektrodekatalysatorprecursor i mindst en fase med en temperatur, der er forudbestemt inden for et område på 10 til 60 °C, i en forudbestemt retentionstid, hvilken elektrodekatalysatorprecursor er fremstillet under anvendelse af et materiale, der indeholder klor (Cl)-arter og udviser en koncentration af klor (Cl)-arter på mere end 2.600 ppm målt ved røntgenfluorescens (XRF)-spektroskopi; et første trin med at tørre dispergeringsvæsken opnået efter det første trin' (1'), til opnåelse af elektrodekatalysatorprecursorpulveret indeholdt i væsken opnået efter det første trin' (1'), et andet trin (2) med at præparere en første væske med elektrodekataly-satorprecursorpulveret opnået efter det første tørringstrin, dispergeret i ultrarent vand, ved at tilsætte ultrarent vand til elektrodekatalysatorprecursorpulve-ret opnået efter det første tørringstrin: et tredje trin (3) med at præparere en anden væske ved filtrering og vask af elektrodekatalysatorprecursoren indeholdt i den første væske med ultrarent vand, og derefter vaske gentagne gange, indtil den elektriske ledeevne (p) af filtratet opnået efter vask er blevet ikke højere end en første forudbestemt værdi udvalgt fra et område på ikke højere end 100 pS/cm, målt ved JlS-stan-dardtestmetoden (JIS K0552), således at elektrodekatalysatorprecursoren, som er indeholdt i væsken, der udviser en elektrisk ledeevne (p), der ikke er højere end den første forudbestemte værdi, dispergeres i ultrarent vand; og et andet trin med at tørre den anden væske.
3. Fremgangsmåde til fremstilling af elektrodekatalysatoren ifølge krav 1, kendetegnet ved, at reduktionsmidlet er mindst en slags forbindelse udvalgt blandt en organisk syre og et organisk surt salt.
4. Fremgangsmåde til fremstilling af elektrodekatalysatoren ifølge krav 1, kendetegnet ved, at reduktionsmidlet er mindst en slags forbindelse udvalgt fra gruppen bestående af myresyre, natriumformiat, oxalsyre og natriumoxalat.
5. Fremgangsmåde til fremstilling af elektrodekatalysatoren ifølge krav 1, kendetegnet ved, at reduktionsmidlet er mindst en slags forbindelse udvalgt blandt en uorganisk syre og et uorganisk surt salt.
6. Fremgangsmåde til fremstilling af elektrodekatalysatoren ifølge krav 1, kendetegnet ved, at reduktionsmidlet er mindst en slags forbindelse udvalgt fra gruppen bestående af kulsyre, natriumcarbonat, thiosulforsyre, natriumthiosul-fat og hydrogensulfid.
7. Fremgangsmåde til fremstilling af elektrodekatalysatoren ifølge et hvilket som helst af kravene 1 til 6, kendetegnet ved, at elektrodekatalysatorprecur-soren anvendt i det første trin (1) eller det første trin' (1') udsættes for en forbehandlingsproces, omfattende: et trin (P1) med at præparere en P1-væske med en elektrodekatalysatorpre-cursor dispergeret i ultrarent vand ved at tilsætte elektrodekatalysatorprecur-soren (PI) til det ultrarene vand, hvilken elektrodekatalysatorprecursor er fremstillet under anvendelse af et materiale, der indeholder klor (Cl)-arter og udviser en koncentration af klor (Cl)-arter på mere end 2.600 ppm målt ved røntgenfluorescens (XRF)-spektroskopi; et trin (P2) med at præparere en P2-væske ved at dispergere elektrodekataly-satorprecursoren i ultrarent vand, hvilken elektrodekatalysatorprecursor opnås ved at vaske elektrodekatalysatorprecursoren indeholdt i P1 -væsken med ultrarent vand, og derefter vaske gentagne gange, indtil den elektriske ledeevne (p) af filtratet opnået efter vask er blevet ikke højere end en forudbestemt P1-værdi udvalgt fra et område på ikke højere end 100 pS/cm, målt ved JlS-stan-dardtestmetoden (J IS K0552); og et trin (P3) med at tørre P2-væsken.
8. Fremgangsmåde til fremstilling af elektrodekatalysatoren ifølge et hvilket som helst af kravene 1 til 7, kendetegnet ved, at skaldelen (5) indeholder mindst et metal udvalgt blandt platin (Pt) og en platin (Pt)-legering, og kernedelen (4) indeholder mindst et metal udvalgt fra gruppen bestående af palladium (Pd), en palladium (Pd)-legering, en platin (Pt)-legering, guld (Au), nikkel (Ni) og en nikkel (Ni)-legering.
9. Fremgangsmåde til fremstilling af elektrodekatalysatoren ifølge krav 8, kendetegnet ved, at der anvendes et platin (Pt)-chlorid som et råmateriale til et metal, der udgør skaldelen (5).
10. Fremgangsmåde til fremstilling af elektrodekatalysatoren ifølge et hvilket som helst af kravene 1 til 9, kendetegnet ved, at fremgangsmåden yderligere omfatter: at danne en første skaldel (6) til at dække mindst en del af overfladen af kernedelen (4) og at danne en anden skaldel (7) til at dække mindst en del af en overflade af den første skaldel (6) til opnåelse af skaldelen (5).
11. Fremgangsmåde til fremstilling af elektrodekatalysatoren ifølge krav 10, kendetegnet ved, at der i fremgangsmåden anvendes et platin (Pt)-chlorid som et råmateriale til et metal, der udgør den anden skaldel (7).
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| CN108568304B (zh) * | 2017-10-12 | 2020-10-09 | 湖南大学 | 一种电催化脱卤催化剂 |
| WO2020092632A1 (en) * | 2018-11-01 | 2020-05-07 | The Regents Of The University Of California | High stability platinum-based electrochemical catalysts |
| CN110441341A (zh) * | 2019-08-07 | 2019-11-12 | 湖州吉昌化学有限公司 | 一种2-乙基蒽醌中硫、氯含量的检测方法 |
| KR20230140280A (ko) * | 2022-03-29 | 2023-10-06 | 코오롱인더스트리 주식회사 | 연료전지용 촉매 및 이의 제조 방법 |
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