Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Friedemann Hegge"'
Autor:
Peter Holzapfel, Melanie Bühler, Chuyen Van Pham, Friedemann Hegge, Thomas Böhm, David McLaughlin, Matthias Breitwieser, Simon Thiele
Publikováno v:
Electrochemistry Communications, Vol 110, Iss , Pp - (2020)
We present a novel membrane electrode assembly (MEA) fabrication method for proton exchange membrane water electrolysis (PEMWE). Inspired by previous work on PEM fuel cells (PEMFCs), we fabricated PEMWE-MEAs via direct membrane deposition (DMD). DMD-
Externí odkaz:
https://doaj.org/article/312a26bdb2184d80aa9234a8a7f41b9b
Autor:
Luca Bohn, Matthias Breitwieser, Peter Strasser, Florian Lombeck, Jessica Hübner, Miriam von Holst, Severin Vierrath, Matthias Kroschel, Edgar Cruz Ortiz, Friedemann Hegge
Publikováno v:
ACS Applied Energy Materials. 3:8276-8284
Significant reduction of the precious metal catalyst loading is one of the key challenges for the commercialization of proton-exchange membrane water electrolyzers. In this work we combine IrOx nanofibers with a conventional nanoparticle-based IrOx a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4314594864fbca6b07c8be19134ede14
https://doi.org/10.1021/acsaem.0c00735
https://doi.org/10.1021/acsaem.0c00735
Publikováno v:
RSC Advances. 10:37923-37927
Reducing the iridium catalyst loading in the anode of polymer electrolyte membrane electrolyzers is a major goal to bring down the cost. However, anodes with low Ir-loading can suffer from poor electrical connectivity and hence lower the efficiency o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad82b3a367cd65d30baf2557df9f5f56
https://doi.org/10.1039/d0ra06714h
https://doi.org/10.1039/d0ra06714h
Three-dimensional microstructure analysis of a polymer electrolyte membrane water electrolyzer anode
Autor:
Simon Thiele, Riko Moroni, Boris Bensmann, Richard Hanke-Rauschenbach, Friedemann Hegge, Patrick Trinke, Severin Vierrath
Publikováno v:
Journal of Power Sources. 393:62-66
The anode catalyst layer of a PEM water electrolyzer is reconstructed using a combination of FIB-SEM tomography and ionomer modeling. The pore space is infiltrated with silicone, enabling good discrimination between pores and IrRuOx catalyst material
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcadb296a77e297cc303848efcc9a205
https://doi.org/10.1016/j.jpowsour.2018.04.089
https://doi.org/10.1016/j.jpowsour.2018.04.089
Autor:
Roland Zengerle, Friedemann Hegge, Matthias Breitwieser, Simon Thiele, Jonathan Sharman, Severin Vierrath, Riko Moroni
Publikováno v:
Journal of The Electrochemical Society
Journal of the Electrochemical Society 166(13), F956-F962 (2019). doi:10.1149/2.0611913jes
Journal of the Electrochemical Society 166(13), F956-F962 (2019). doi:10.1149/2.0611913jes
Corrosion of the carbon support leads to a severe decay in the performance of PEM fuel cells, mainly due to an increase in the oxygen transport resistance. To investigate the effect of degradation on oxygen transport, we cycled MEAs between 1−1.5 V
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3d9e3a2495373bd0345f52fe4254c21
https://opus4.kobv.de/opus4-fau/files/18207/jes_166_13_F956.pdf
https://opus4.kobv.de/opus4-fau/files/18207/jes_166_13_F956.pdf
State-of-the-art polymer electrolyte membrane water electrolyzers (PEMWEs) are assembled via sandwiching a catalyst coated membrane (CCM) between porous transport layers (PTLs). In this work we investigate electrodes deposited directly on PTLs. Toget
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::197f8ae572614271fc7a86ee6cb76834
https://publica.fraunhofer.de/handle/publica/257208
https://publica.fraunhofer.de/handle/publica/257208
Autor:
Friedemann Hegge, Severin Vierrath, Shohei Ogawa, Lukas Zielke, Melanie Bühler, Carolin Klose, Roland Zengerle, Shawn Litster, Simon Thiele
Publikováno v:
ECS Meeting Abstracts. :1514-1514
In polymer electrolyte membrane water electrolysis (PEMWE) the anode is crucial for the overall performance. State-of-the-art anodes comprise Ir, IrOx or IrRuOx, typically bound by an ionomer and can be TiOx supported [1]. Besides the material also t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e203f2b7bb4b52debadbb8144f6213ce
https://doi.org/10.1149/ma2017-01/31/1514
https://doi.org/10.1149/ma2017-01/31/1514