Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 28, Pages 23836-23842Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b06717
Keywords
biofuel cell; glucose; series and parallel stacks; enzymes; carbon nanotubes
Funding
- region Auvergne-Rhone-Alpes [14-011164-01]
- platform Chimie NanoBio ICMG FR 2607 (PCN-ICMG) from the Institute Carnot PolyNat at Grenoble
- LabEx ARCANE [ANR-11-LABX-0003-01]
Ask authors/readers for more resources
Bioelectrocatalytic carbon nanotube based pellets comprising redox enzymes were directly integrated in a newly conceived flow-through fuel cell. Porous electrodes and a separating cellulose membrane were housed in a glucose/oxygen biofuel cell design with inlets and outlets allowing the flow of electrolyte through the entire fuel cell. Different flow setups were tested and the optimized single cell setup, exploiting only 5 mmol L-1 glucose, showed an open circuit voltage (OCV) of 0.663 V and provided 1.03 +/- 0.05 mW at 0.34 V. Furthermore, different charge/discharge cycles at 500 Omega and 3 k Omega were applied to optimize long-term stability leading to 3.6 J (1 mW h) of produced electrical energy after 48 h. Under continuous discharge at 6 k Omega, about 0.7 mW h could be produced after a 24 h period. The biofuel cell design further allows a convenient assembly of several glucose biofuel cells in reduced volumes and their connection in parallel or in series. The configuration of two biofuel cells connected in series showed an OCV of 1.35 V and provided 1.82 +/- 0.09 mW at 0.675 V, and when connected in parallel, showed an OCV of 0.669 V and provided 1.75 +/- 0.09 mW at 0.381 V. The presented design is conceived to stack an unlimited amount of biofuel cells to reach the necessary voltage and power for portable electronic devices without the need for step-up converters or energy managing systems.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available