title: Self-feeding paper based biofuel cell/self-powered hybrid μ-supercapacitor integrated system.
abstract: 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.
authors.affiliation: MPA-11 Material Synthesis and Integrated Devices, Los Alamos National Laboratory, Los Alamos, NM, USA.
authors.forename: Claudia W
authors.initials: CW
authors.lastname: Narvaez Villarrubia
authors.affiliation: Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi, 2, 40126 Bologna, Italy. Electronic address: francesca.soavi@unibo.it.
authors.forename: Francesca
authors.initials: F
authors.lastname: Soavi
authors.affiliation: Center Micro-Engineered Materials (CMEM), Department of Chemical and Biological Engineering, University of New Mexico, NM, USA.
authors.forename: Carlo
authors.initials: C
authors.lastname: Santoro
authors.affiliation: Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, Via Selmi, 2, 40126 Bologna, Italy.
authors.forename: Catia
authors.initials: C
authors.lastname: Arbizzani
authors.affiliation: Center Micro-Engineered Materials (CMEM), Department of Chemical and Biological Engineering, University of New Mexico, NM, USA.
authors.forename: Alexey
authors.initials: A
authors.lastname: Serov
authors.affiliation: Center Micro-Engineered Materials (CMEM), Department of Chemical and Biological Engineering, University of New Mexico, NM, USA.
authors.forename: Santiago
authors.initials: S
authors.lastname: Rojas-Carbonell
authors.affiliation: MPA-11 Material Synthesis and Integrated Devices, Los Alamos National Laboratory, Los Alamos, NM, USA.
authors.forename: Gautam
authors.initials: G
authors.lastname: Gupta
authors.affiliation: Center Micro-Engineered Materials (CMEM), Department of Chemical and Biological Engineering, University of New Mexico, NM, USA. Electronic address: plamen@unm.edu.
authors.forename: Plamen
authors.initials: P
authors.lastname: Atanassov
mesh_terms: D001674:Bioelectric Energy Sources; D002384:Catalysis; D025802:Electric Capacitance; D004566:Electrodes; D004867:Equipment Design; D005947:Glucose / Q000378:metabolism; D042843:Glucose 1-Dehydrogenase / Q000378:metabolism; D056656:Lab-On-A-Chip Devices; D044925:Oxidoreductases Acting on CH-CH Group Donors / Q000378:metabolism; D010209:Paper
chemical_list: D042843:Glucose 1-Dehydrogenase; D044925:Oxidoreductases Acting on CH-CH Group Donors; C042401:bilirubin oxidase; D005947:Glucose
keywords: Enzymatic fuel cell; Paper-based microfluidic system; Power pulses; Supercapacitor