Pt-free tandem molecular photoelectrochemical cells for water splitting driven by visible light
2014 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 16, no 46, 25234-25240 p.Article in journal (Refereed) Published
Photoelectrochemical (PEC) cells using molecular catalysts to split water into hydrogen and oxygen have been investigated intensively during the past years. However, the high-cost of Pt counter electrodes and instability of molecular PEC cells hinder the practical applications. We describe in this article a Pt-free tandem molecular PEC cell, for the first time, employing molecular ruthenium- and cobalt-catalysts with strong dipicolinic acid anchoring groups on the respective photoanode and photocathode for total water splitting. The Pt-free tandem molecular PEC cell showed an effective and steady photocurrent density of ca. 25 mu A cm(-2) for water splitting driven by visible light without external bias. This study indicates that tandem molecular PEC cells can provide great potential to the Pt-free devices for light driven total water splitting.
Place, publisher, year, edition, pages
2014. Vol. 16, no 46, 25234-25240 p.
IdentifiersURN: urn:nbn:se:kth:diva-158855DOI: 10.1039/c4cp04489dISI: 000344989500003ScopusID: 2-s2.0-84908568729OAI: oai:DiVA.org:kth-158855DiVA: diva2:782230
QC 201501202015-01-202015-01-122016-01-29Bibliographically approved