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Advanced alkaline water electrolysis
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2012 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 0019-4686, Vol. 82, 384-391 p.Article in journal (Refereed) Published
Abstract [en]

A short review on the fundamental and technological issues relevant to water electrolysis in alkaline and proton exchange membrane (PEM) devices is given. Due to price and limited availability of the platinum group metal (PGM) catalysts they currently employ, PEM electrolyzers have scant possibilities of being employed in large-scale hydrogen production. The importance and recent advancements in the development of catalysts without PGMs are poised to benefit more the field of alkaline electrolysis rather than that of PEM devices. This paper presents our original data which demonstrate that an advanced alkaline electrolyzer with performances rivaling those of PEM electrolyzers can be made without PGM and with catalysts of high stability and durability. Studies on the advantages/limitations of electrolyzers with different architectures do show how a judicious application of pressure differentials in a recirculating electrolyte scheme helps reduce mass transport limitations, increasing efficiency and power density.

Place, publisher, year, edition, pages
2012. Vol. 82, 384-391 p.
Keyword [en]
H 2 economy, HER, Non-noble metal catalysts, OER, Water electrolysis
National Category
Chemical Engineering
URN: urn:nbn:se:kth:diva-103515DOI: 10.1016/j.electacta.2012.05.011ISI: 000311873800056ScopusID: 2-s2.0-84866362249OAI: diva2:561053

QC 20121017

Available from: 2012-10-17 Created: 2012-10-15 Last updated: 2013-01-08Bibliographically approved

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kiros, Yohannes
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