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

3 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. selfcharging 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 selfpowered
biosensor in food or biomedical applications.
Original languageEnglish
JournalBiosensors and Bioelectronics
Volume176
DOIs
Publication statusPublished - 2021
MoE publication typeA1 Journal article-refereed

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