Supercapacitive Biosolar Cell Driven by Direct Electron Transfer between Photosynthetic Membranes and CNT Networks with Enhanced Performance

Dmitry Pankratov, Galina Pankratova, Tatiana P. Dyachkova, Peter Falkman, Hans Erik Åkerlund, Miguel D. Toscano, Qijin Chi, Lo Gorton

Research output: Contribution to journalArticlepeer-review

26 Citations (SciVal)

Abstract

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.

Original languageEnglish
Pages (from-to)2635-2639
Number of pages5
JournalACS Energy Letters
Volume2
Issue number11
DOIs
Publication statusPublished - 2017 Nov 10

Subject classification (UKÄ)

  • Bioenergy

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