Self-feeding paper based biofuel cell/self-powered hybrid μ-supercapacitor integrated system

Santoro, Carlo; Narvaez Villarrubia, Claudia W.; Soavi, Francesca; Santoro, Carlo; Arbizzani, Catia; Serov, Alexey; Rojas-Carbonell, Santiago; Gupta, Gautam; Atanassov, Plamen

Abstract

© 2016 Elsevier B.V. For the first time, a paper based enzymatic fuel cell is used as self-recharged supercapacitor. In this supercapacitive enzymatic fuel cell (SC-EFC), the supercapacitive features of the electrodes are exploited to demonstrate high power output under pulse operation. Glucose dehydrogenase-based anode and bilirubin oxidase-based cathode were assembled to a quasi-2D capillary-driven microfluidic system. Capillary flow guarantees the continuous supply of glucose, cofactor and electrolytes to the anodic enzyme and the gas-diffusional cathode design provides the passive supply of oxygen to the catalytic layer of the electrode. The paper-based cell was self-recharged under rest and discharged by high current pulses up to 4mAcm−2. The supercapacitive behavior and low equivalent series resistance of the cell permitted to achieve up to a maximum power of 0.87mWcm−2 (10.6mW) for pulses of 0.01s at 4mAcm−2. This operation mode allowed the system to achieve at least one order of magnitude higher current/power generation compared to the steady state operation.

• Journal Article Type: Article
• Acceptance Date: Jun 28, 2016
• Online Publication Date: Jun 29, 2016
• Publication Date: Dec 15, 2016
• Deposit Date: Apr 23, 2018
• Journal: Biosensors and Bioelectronics
• Print ISSN: 0956-5663
• Electronic ISSN: 1873-4235
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 86
• Pages: 459-465
• DOI: https://doi.org/10.1016/j.bios.2016.06.084
• Keywords: enzymatic fuel cell, supercapacitor, paper-based microfluidic system, power pulses
• Public URL: https://uwe-repository.worktribe.com/output/904788
• Publisher URL: http://dx.doi.org/10.1016/j.bios.2016.06.084
• Contract Date: Apr 23, 2018