Paper-based enzymatic microfluidic fuel cell: From a two-stream flow device to a single-stream lateral flow strip

JOURNAL OF POWER SOURCES

卷:326

Article

Jose Gonzalez-Guerrero, Maria¹  Javier del Campo, F.¹  Pablo Esquivel, Juan^1,2  Giroud, Fabien³  Minteer, Shelley D.³  Sabate, Neus^1,4 

[1] CSIC, CNM, IMB, Campus Univ Autonoma Barcelona Esfera UAB, Barcelona 08193, Spain

[2] Univ Washington, Dept Bioengn, 3720 15th Ave NE, Seattle, WA 98195 USA

[3] Univ Utah, Dept Chem & Mat Sci & Engn, 315 S 1400 E Rm 2020, Salt Lake City, UT 84112 USA

[4] ICREA, Barcelona, Spain

关键词: Paper-based biofuel cell;    Enzymatic;    Microfluidic;   

DOI  :  10.1016/j.jpowsour.2016.07.014

来源: Elsevier

【 摘 要 】

This work presents a first approach towards the development of a cost-effective enzymatic paper-based glucose/O-2 microfluidic fuel cell in which fluid transport is based on capillary action. A first fuel cell configuration consists of a Y-shaped paper device with the fuel and the oxidant flowing in parallel over carbon paper electrodes modified with bioelectrocatalytic enzymes. The anode consists of a ferrocenium-based polyethyleneimine polymer linked to glucose oxidase (GOx/Fc-C-6-LPEI), while the cathode contains a mixture of laccase, anthracene-modified multiwall carbon nanotubes, and tetrabutyiammonium bromide-modified Nafion (MWCNTs/laccase/TBAB-Nafion). Subsequently, the Y-shaped configuration is improved to use a single solution containing both, the anolyte and the catholyte. Thus, the electrolytes pHs of the fuel and the oxidant solutions are adapted to an intermediate pH of 5.5. Finally, the fuel cell is run with this single solution obtaining a maximum open circuit of 0.55 +/- 0.04 V and a maximum current and power density of 225 17 A cm(-2) and 24 5 W cm(-2), respectively. Hence, a power source closer to a commercial application (similar to conventional lateral flow test strips) is developed and successfully operated. This system can be used to supply the energy required to power microelectronics demanding low power consumption. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free