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  • Shen, Fei, et al. (author)
  • Supercapacitor/biofuel cell hybrid device employing biomolecules for energy conversion and charge storage
  • 2019
  • In: Bioelectrochemistry. - : Elsevier BV. - 1567-5394. ; 128, s. 94-99
  • Journal article (peer-reviewed)abstract
    • We report on a hybrid bioelectrochemical system that integrates an energy converting part, viz. a glucose/oxygen enzymatic fuel cell, with a charge-storing component, in which the redox features of the immobilized redox protein cytochrome c (cyt c) were utilized. Bilirubin oxidase and pyrroloquinoline quinone-dependent glucose dehydrogenase (PQQ-GDH) were employed as the biocatalysts for dioxygen reduction and glucose oxidation, respectively. A bi-protein PQQ-GDH/cyt c signal chain was created that facilitates electron transfer between the enzyme and the electrode surface. The assembled supercapacitor/biofuel cell hybrid biodevice displays a 15 times higher power density tested in the pulse mode compared to the performance achieved from the continuously operating regime (4.5 and 0.3 μW cm −2 , respectively) with an 80% residual activity after 50 charge/discharge pulses. This can be considered as a notable step forward in the field of glucose/oxygen membrane-free, biocompatible hybrid power sources.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Gorton, Lo (1)
Chi, Qijin (1)
Zhang, Jingdong (1)
Pankratov, Dmitry (1)
Toscano, Miguel D. (1)
Pankratova, Galina (1)
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Ulstrup, Jens (1)
Shen, Fei (1)
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University
Lund University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Engineering and Technology (1)
Year
2019 (1)

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