Dissolution of WO3 modified with IrOx overlayers during photoelectrochemical water splitting

Autor: Ken J. Jenewein, Julius Knöppel, André Hofer, Attila Kormányos, Britta Mayerhöfer, Florian D. Speck, Markus Bierling, Simon Thiele, Julien Bachmann, Serhiy Cherevko

Publikováno v: SusMat, Vol 3, Iss 1, Pp 128-136 (2023)

Abstract WO3, an abundant transition metal semiconductor, is one of the most discussed materials to be used as a photoanode in photoelectrochemical water‐splitting devices. The photoelectrochemical properties, such as photoactivity and selectivity

Externí odkaz: https://doaj.org/article/885d46c690704f85a9322317f93696d2

On the limitations in assessing stability of oxygen evolution catalysts using aqueous model electrochemical cells

Autor: Julius Knöppel, Maximilian Möckl, Daniel Escalera-López, Kevin Stojanovski, Markus Bierling, Thomas Böhm, Simon Thiele, Matthias Rzepka, Serhiy Cherevko

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)

Dissolution of Ir catalysts varies widely between PEM water electrolysers and aqueous electrolytes. Here, we systematically investigate this finding and propose that stabilization of the catalysts over time and overestimated ionomer acidity are the m

Externí odkaz: https://doaj.org/article/45fe91fd42294b50b5411ac624962557

Dissolution of WO 3 modified with IrO x overlayers during photoelectrochemical water splitting

Autor: Ken J. Jenewein, Julius Knöppel, André Hofer, Attila Kormányos, Britta Mayerhöfer, Florian D. Speck, Markus Bierling, Simon Thiele, Julien Bachmann, Serhiy Cherevko

Publikováno v: SusMat 3(1), 128-136 (2023). doi:10.1002/sus2.107

WO3, an abundant transition metal semiconductor, is one of the most discussedmaterials to be used as a photoanode in photoelectrochemical water-splittingdevices. The photoelectrochemical properties, such as photoactivity and selectivityofWO3 in diffe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::113c39e6b905ac6498856badb136f94d
https://doi.org/10.1002/sus2.107

Toward Understanding Catalyst Layer Deposition Processes and Distribution in Anodic Porous Transport Electrodes in Proton Exchange Membrane Water Electrolyzers

Autor: Markus Bierling, David McLaughlin, Britta Mayerhöfer, Simon Thiele

Publikováno v: Advanced energy materials 13(13), 2203636-(2023). doi:10.1002/aenm.202203636

Finding the optimum structure in porous transport electrodes (PTEs) for proton exchange membrane water electrolyzer anodes is one of the central current technological challenges. Both the structure of the porous transport layer (PTL) and its interact

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::074451a284c8eb1454f31aac9259de98
https://juser.fz-juelich.de/record/1002032

Platinum Dissolution in Realistic Fuel Cell Catalyst Layers

Autor: Simon Thiele, Serhiy Cherevko, Karl Johann Jakob Mayrhofer, Konrad Ehelebe, Julius Knöppel, Nadiia Kulyk, Britta Mayerhöfer, Thomas Böhm, Markus Bierling

Publikováno v: Angewandte Chemie (International Ed. in English)
Angewandte Chemie / International edition 60(16), 8882-8888 (2021). doi:10.1002/anie.202014711

Pt dissolution has already been intensively studied in aqueous model systems and many mechanistic insights have been gained. Nevertheless, transfer of new knowledge to real‐world fuel cell systems is still a significant challenge. To close this gap

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::243a2fe4661d97c77d2e4148bbb703bf
https://doi.org/10.1002/anie.202014711