Towards developing a backing layer for proton exchange membrane electrolyzers
By P. Lettenmeier, S. Kolb, Fabian Burggraf, A. Gago, K. Friedrich. 2016
159 citations recorded by the source corpus.
Abstract Current energy policies require the urgent replacement of fossil energy carriers by carbon neutral ones, such as hydrogen. The backing or micro-porous layer plays an important role in the performance of hydrogen proton exchange membrane (PEM) fuel cells, reducing contact resistance and improving reactant/product management. Such carbon-based coating cannot be used in PEM electrolysis since it oxidizes to CO2 at high voltages. A functional titanium macro-porous layer (MPL) on the current collectors of a PEM electrolyzer is developed by thermal spraying. It improves the contact with the catalyst layers by ca. 20 mΩ cm2, increasing significantly the efficiency of the device when operating at high current densities.
Subfields: Electrical and Electronic Engineering, Energy Engineering and Power Technology, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/14116962bf6f1251af9a1dbce839730b4e6e7ab1
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Citations in the corpus
- A review of the porous transport layer in polymer electrolyte membrane water electrolysis (2021, methodology): “Besides iridium, some other metals were used for coating on the titanium for preventing the passivation of titanium surface like platinum,(57) gold,(58) and also titanium.(59) Jung et al(58) proved that a gold coating on the titanium bipolar plates was effective to prevent titanium passivation.”