title: Hybrid microfluidic fuel cell based on Laccase/C and AuAg/C electrodes.
abstract: A hybrid glucose microfluidic fuel cell composed of an enzymatic cathode (Laccase/ABTS/C) and an inorganic anode (AuAg/C) was developed and tested. The enzymatic cathode was prepared by adsorption of 2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and Laccase on Vulcan XC-72, which act as a redox mediator, enzymatic catalyst and support, respectively. The Laccase/ABTS/C composite was characterised by Fourier Transform Infrared (FTIR) Spectroscopy, streaming current measurements (Zeta potential) and cyclic voltammetry. The AuAg/C anode catalyst was characterised by Transmission electron microscopy (TEM) and cyclic voltammetry. The hybrid microfluidic fuel cell exhibited excellent performance with a maximum power density value (i.e., 0.45 mW cm(-2)) that is the highest reported to date. The cell also exhibited acceptable stability over the course of several days. In addition, a Mexican endemic Laccase was used as the biocathode electrode and evaluated in the hybrid microfluidic fuel cell generating 0.5 mW cm(-2) of maximum power density.
authors.affiliation: División de Investigación y Posgrado, Facultad de Química, Universidad Autónoma de Querétaro, 76010 Querétaro, Mexico.
authors.forename: B
authors.initials: B
authors.lastname: López-González
authors.affiliation: Centro de Investigación y Desarrollo Tecnológico en Electroquímica, 76703 Pedro Escobedo, Mexico.
authors.forename: A
authors.initials: A
authors.lastname: Dector
authors.affiliation: Centro de Investigación y Desarrollo Tecnológico en Electroquímica, 76703 Pedro Escobedo, Mexico.
authors.forename: F M
authors.initials: FM
authors.lastname: Cuevas-Muñiz
authors.affiliation: Centro de Investigación y Desarrollo Tecnológico en Electroquímica, 76703 Pedro Escobedo, Mexico.
authors.forename: N
authors.initials: N
authors.lastname: Arjona
authors.affiliation: Universidad Politécnica de Pachuca, 43380 Zempoala, Mexico.
authors.forename: C
authors.initials: C
authors.lastname: Cruz-Madrid
authors.affiliation: Universidad Politécnica de Pachuca, 43380 Zempoala, Mexico.
authors.forename: A
authors.initials: A
authors.lastname: Arana-Cuenca
authors.affiliation: División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, 76010 Querétaro, Mexico.
authors.forename: M
authors.initials: M
authors.lastname: Guerra-Balcázar
authors.affiliation: Centro de Investigación y Desarrollo Tecnológico en Electroquímica, 76703 Pedro Escobedo, Mexico.
authors.forename: L G
authors.initials: LG
authors.lastname: Arriaga
authors.affiliation: División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, 76010 Querétaro, Mexico. Electronic address: janet.ledesma@uaq.mx.
authors.forename: J
authors.initials: J
authors.lastname: Ledesma-García
mesh_terms: D052160:Benzothiazoles; D001674:Bioelectric Energy Sources; D055453:Coriolaceae / Q000201:enzymology; D055664:Electrochemical Techniques; D004800:Enzymes, Immobilized; D004867:Equipment Design; D006046:Gold; D042845:Laccase; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation* / Q000379:methods; D012834:Silver; D017550:Spectroscopy, Fourier Transform Infrared; D013451:Sulfonic Acids
chemical_list: D052160:Benzothiazoles; D004800:Enzymes, Immobilized; D013451:Sulfonic Acids; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid; D012834:Silver; D006046:Gold; D042845:Laccase
keywords: Enzymatic extracts; Laccase immobilisation; Microfluidic fuel-cell; Selective materials