Electrochromic Iridium-Containing Nickel Oxide Films with Excellent Electrochemical Cycling Performance
2016 (English)In: Journal of the Electrochemical Society, ISSN 0013-4651, E-ISSN 1945-7111, Vol. 163, no 2, E7-E13 p.Article in journal (Refereed) Published
Electrochromic Ni oxide thin films attract much interest because of their large potential for applications as optically active layers in energy-saving and comfort enhancing smart windows in buildings. However Ni oxide, typically being the anodic counter electrode in a W-oxide-based device, may suffer severe charge capacity degradation upon extended electrochemical cycling. It is therefore important to identify improved Ni-oxide-based thin films for electrochromics. Here we describe a new class of such films wherein an addition of a small amount of Ir to Ni oxide is found to provide strongly improved electrochemical cycling durability. Best properties were achieved with Ir/(Ir + Ni) = 7.6%, and such films displayed charge capacity and optical modulation that, remarkably, were still increasing after 10,000 cycles.
Place, publisher, year, edition, pages
2016. Vol. 163, no 2, E7-E13 p.
Chemical Sciences Physical Sciences Engineering and Technology Materials Chemistry
IdentifiersURN: urn:nbn:se:uu:diva-267706DOI: 10.1149/2.0591602jesISI: 000367324400057OAI: oai:DiVA.org:uu-267706DiVA: diva2:874009
FunderEU, European Research Council, 267234