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Solar Heat-Enhanced Energy Conversion in Devices Based on Photosynthetic Membranes and PEDOT:PSS-Nanocellulose Electrodes
Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-8478-4663
Linköping University, Department of Science and Technology, Laboratory of Organic Electronics. Linköping University, Faculty of Science & Engineering.
Res Inst Sweden, Sweden.
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2020 (English)In: ADVANCED SUSTAINABLE SYSTEMS, ISSN 2366-7486, article id 1900100Article in journal (Refereed) Epub ahead of print
Abstract [en]

Energy harvesting from photosynthetic membranes, proteins, or bacteria through bio-photovoltaic or bio-electrochemical approaches has been proposed as a new route to clean energy. A major shortcoming of these and solar cell technologies is the underutilization of solar irradiation wavelengths in the IR region, especially those in the far IR region. Here, a biohybrid energy-harvesting device is demonstrated that exploits IR radiation, via convection and thermoelectric effects, to improve the resulting energy conversion performance. A composite of nanocellulose and the conducting polymer system poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is used as the anode in biohybrid cells that includes thylakoid membranes (TMs) and redox mediators (RMs) in solution. By irradiating the conducting polymer electrode by an IR light-emitting diode, a sixfold enhancement in the harvested bio-photovoltaic power is achieved, without compromising stability of operation. Investigation of the output currents reveals that IR irradiation generates convective heat transfer in the electrolyte bulk, which enhances the redox reactions of RMs at the anode by suppressing diffusion limitations. In addition, a fast-transient thermoelectric component, originating from the PEDOT:PSS-nanocellulose-electrolyte interphase, further increases the bio-photocurrent. These results pave the way for the development of energy-harvesting biohybrids that make use of heat, via IR absorption, to enhance energy conversion efficiency.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2020. article id 1900100
Keywords [en]
bio-photoelectrochemical cells; bio-photovoltaic cells; energy harvesting; infrared; nanocellulose; PEDOT; PSS; thylakoid membranes
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:liu:diva-163027DOI: 10.1002/adsu.201900100ISI: 000504698700001OAI: oai:DiVA.org:liu-163027DiVA, id: diva2:1384277
Note

Funding Agencies|Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; Swedish Foundation for Strategic ResearchSwedish Foundation for Strategic Research; Onnesjo Foundation; Research Institutes of Sweden; Swedish MSCA Seal of Excellence program; Swedish MSCA Seal of Excellence program (Vinnova) [2017-03121]

Available from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-01-14Bibliographically approved

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