Highly sensitive and stable fructose self-powered biosensor based on a self-charging biosupercapacitor

Paolo Bollella, Zhanna Boeva, Rose-Marie Latonen, Kenji Kano, Lo Gorton, Johan Bobacka*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

Herein, we present an alternative approach to obtain a highly sensitive and stable self-powered biosensor that was used to detect D-fructose as proof of concept.In this platform, we perform a two-step process, viz. self charging the biosupercapacitor for a constant time by using D-fructose as fuel and using the stored charge to realize the detection of D-fructose by performing several polarization curves at different D-fructose concentrations. The proposed BSC shows an instantaneous power density release of 17.6 mW cm(-2) and 3.8 mW cm(-2) in pulse mode and at constant load, respectively. Moreover, the power density achieved for the self-charging BSC in pulse mode or under constant load allows for an enhancement of the sensitivity of the device up to 10 times (3.82 +/- 0.01 mW cm(-2) mM(-1), charging time = 70 min) compared to the BSC in continuous operation mode and 100 times compared to the normal enzymatic fuel cell. The platform can potentially be employed as a self powered biosensor in food or biomedical applications.
Original languageEnglish
Article number112909
JournalBiosensors and Bioelectronics
Volume176
DOIs
Publication statusPublished - 15 Mar 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Self-powered biosensor
  • Self-charging biosupercapacitor
  • Fructose dehydrogenase
  • Conducting polymer
  • Enzyme-based electrode

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