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  • 1.
    Pankratov, Dmitry
    et al.
    Department of Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark.
    Pankratova, Galina
    Department of Biochemistry and Structural Biology, Lund University, P.O. Box 124, Lund, SE-22100, Sweden.
    Dyachkova, Tatiana
    Tambov State Technical University, Sovetskaya Street, 106, Tambov, 392000, Russian Federation.
    Falkman, Peter
    Malmö högskola, Faculty of Health and Society (HS), Department of Biomedical Science (BMV).
    Åkerlund, Hans-Erik
    Department of Biochemistry and Structural Biology, Lund University, P.O. Box 124, Lund, SE-22100, Sweden.
    Toscano, Miguel
    Novozymes A/S, Krogshøjvej 36, Bagsværd, 2880, Denmark.
    Qijin, Chi
    Department of Chemistry, Technical University of Denmark, Kongens Lyngby, DK-2800, Denmark.
    Gorton, Lo
    Department of Biochemistry and Structural Biology, Lund University, P.O. Box 124, Lund, SE-22100, Sweden.
    Supercapacitive Biosolar Cell Driven by Direct Electron Transfer between Photosynthetic Membranes and CNT Networks with Enhanced Performance2017In: ACS Energy Letters, E-ISSN 2380-8195, Vol. 2, no 11, p. 2635-2639Article in journal (Refereed)
    Abstract [en]

    Integrating photosynthetic cell components with nanostructured materials can facilitate the conversion of solar energy into electric power for creating sustainable carbon-neutral energy sources. With the aim at exploring efficient photoinduced biocatalytic energy conversion systems, we have used an amidated carbon nanotube (aCNT) networked matrix to integrate thylakoid membranes (TMs) for construction of a direct electron transfer-driven biosolar cell. We have evaluated the resulting photobioelectrochemical cells systematically. Compared to the carboxylated CNT (cCNT)-TMs system, the aCNT-TMs system enabled a 1.5-fold enhancement in photocurrent density. This system offers more advantages including a reduced charge-transfer resistance, a lower open-circuit potential, and an improved cell stability. More remarkably, the average power density of the optimized cells was 250 times higher than that of reported analogue systems. Our results suggest the significance of physical and electronic interactions between the photosynthetic components and the support nanomaterials and may offer new clues for designing improved biosolar cells.

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