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Dual-feature photobioanodes based on nanoimprint lithography for photoelectric biosupercapacitors
Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV).
Obducat Technol AB, S-22363 Lund, Sweden..
Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV).
Obducat Technol AB, S-22363 Lund, Sweden..
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2022 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 517, article id 230677Article in journal (Refereed) Published
Abstract [en]

Direct transformation of solar energy into electrical energy by means of biological photosynthesis is considered as an attractive option for sustainable electrical energy production. Thylakoid membranes, the site of photosynthesis, are regarded as a promising biological material for the development of photoelectric biodevices, which produce electrical power consuming only light energy as oxygen evolves at photobioanode upon irradiation and biocathode converts it back to water. Therefore, in this work dual-feature photobioanode based on nanoimprinted gold substrates modified with thylakoids in combination with a capacitive part made of a planar gold substrate coated with a conductive polymer was designed and evaluated, providing open-circuit potential of -0.21 V vs. Ag vertical bar AgCl vertical bar KClsat and a capacitance of ca. 60 F m(-2) both at ambient light and artificial illumination of 400 W m(-2). Combination of thylakoid based dual-feature photobioanode with bilirubin oxidase modified transparent and capacitive indium tin oxide biocathode resulted in a photoelectric biosupercapacitor with remarkable characteristics at ambient light, viz. an open-circuit voltage as high as 0.74 V, which was stable upon charge-discharge cycles during ca. 2 h.

Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 517, article id 230677
Keywords [en]
Biosupercapacitor, Photosynthetic electricity, Thylakoid membranes, Nanoimprint lithography, Ambient light
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:mau:diva-47228DOI: 10.1016/j.jpowsour.2021.230677ISI: 000720574900003Scopus ID: 2-s2.0-85118498184OAI: oai:DiVA.org:mau-47228DiVA, id: diva2:1617316
Available from: 2021-12-06 Created: 2021-12-06 Last updated: 2024-02-05Bibliographically approved

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Aleksejeva, OlgaGenevskiy, VladislavShleev, Sergey

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