Friedrich, K. Andreas und Lettenmeier, Philipp und Stiber, Svenja und Ansar, Syed Asif und Wang, Li und Gago, Aldo (2018) Cost Effective PEM Electrolysis: The Quest to Achieve Superior Efficiencies with Reduced Investment. 233rd Meeting of the Electrochemical Society, 2018-05-13 - 2018-05-17, Seattle, USA. doi: 10.1149/08513.0003ecst.
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Kurzfassung
Hydrogen is expected to play an important role as a crosslinking technology between power generation on one hand and transport and industry on the other hand. It can directly replace fossil fuels in transport and industry when produced by water electrolysis renewable energies such as solar or wind, which are converted with low efficiencies. The relevant technologies are either the mature alkaline electrolysis or the newer proton exchange membrane (PEM) water electrolysis. For PEM electrolysis in particular, key components that determine the stack cost are the titanium-based contact elements, such as the bipolar plates (BPP) and the current collectors (CC), and the high iridium loading of electrocatalyst for the OER in state of art membrane electrode assemblies (MEA). However, the cost structure depends on the specific design of the electrolyser. This presentation will discuss strategies for cost reduction by synthesizing novel electrocatalyst with the aim of lowering the high Ir loading. Our concept can be applied to supported and alloy electrocatalysts. The supports need to be highly stable and exhibit sufficient electronic conductivity. The enhancement of activity achieved with improved electrocatalyst reaches a factor of about 15 with respect to the best commercially available electrocatalyst. Additionally, the cost reduction achieved by a titanium coating for stainless steel BPPs or CCs for PEM electrolysis will be discussed. We use vacuum plasma spraying (VPS) to coat either dense coatings for corrosion protection of stainless steel components or build up titanium diffusion layers with defined porosity as contact elements for the MEA. The conductivity of the titanium coating can be improved by well-known Pt or Au additions; however, we have also developed promising non-noble conductivity enhancement elements. Furthermore, the VPS coating and production procedure is adaptable to large-scale industrial production.
elib-URL des Eintrags: | https://elib.dlr.de/125602/ | ||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||
Titel: | Cost Effective PEM Electrolysis: The Quest to Achieve Superior Efficiencies with Reduced Investment | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 13 Mai 2018 | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||
DOI: | 10.1149/08513.0003ecst | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | hydrogen production, electrolysis, cost reduction | ||||||||||||||||||||||||||||
Veranstaltungstitel: | 233rd Meeting of the Electrochemical Society | ||||||||||||||||||||||||||||
Veranstaltungsort: | Seattle, USA | ||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 13 Mai 2018 | ||||||||||||||||||||||||||||
Veranstaltungsende: | 17 Mai 2018 | ||||||||||||||||||||||||||||
Veranstalter : | Electrochemical Society (ECS) | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||||||||||
HGF - Programm: | Speicher und vernetzte Infrastrukturen | ||||||||||||||||||||||||||||
HGF - Programmthema: | Elektrolyse und Wasserstoff | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | E SP - Energiespeicher | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Elektrochemische Prozesse (Elektrolyse) (alt) | ||||||||||||||||||||||||||||
Standort: | Stuttgart | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Technische Thermodynamik > Elektrochemische Energietechnik | ||||||||||||||||||||||||||||
Hinterlegt von: | Friedrich, Prof.Dr. Kaspar Andreas | ||||||||||||||||||||||||||||
Hinterlegt am: | 10 Jan 2019 15:20 | ||||||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:29 |
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