期刊
FUEL CELLS
卷 9, 期 1, 页码 44-52出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/fuce.200800039
关键词
Adsorption; Alternate Fuels; Cyclic Voltammetry; Modelling; Rotating Electrode
资金
- US Army Research Office [W911NF-07-C-0044]
- United States Defense Advanced Research Project Agency (DARPA)
Chronoamperometric investigations with rotating disc electrodes (RDEs) were used to characterise the anodic half-cell of yeast powered microbial fuel cells using methylene blue (MB) as a mediator. Both convection and mediator adsorption were shown to affect the anodic current. A microbe-mediator limited reaction model was developed and shown to agree well with the experimental data. A power density of similar to 150 mu W cm(-2) was achieved in a full cell, which represented a significant increase from prior reports on yeast-catalysed fuel cells. The increased power density was enabled by using high mediator concentrations and by controlling the mediator adsorption.
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