Biofilm and Nanowire Production Leads to Increased Current in Geobacter sulfurreducens Fuel Cells

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Geobacter: the microbe electric's physiology, ecology, and practical applications. (2011, background): “An initial observation in the development of higher current densities was that the increase in current was proportional to the increase in biomass on the anode, suggesting that cells at great distance from the anode were contributing to current production (Reguera et al., 2006).”
Mineral-microbe interactions: a review (2010, neutral): “, 2008; Newman, 2008), nanowires (Reguera et al., 2005; Gorby et al., 2006; Reguera et al., 2006), EPS, such as polysaccharides (Marshall et al.”
Electrosynthesis of Organic Compounds from Carbon Dioxide Is Catalyzed by a Diversity of Acetogenic Microorganisms (2011, neutral): “staltic pump as previously described (29, 32).”
Review of self-potential methods in hydrogeophysics. (2009, background): “specific bacteria have been shown to produce structured nanowires known to serve as electron transfer pathways and, thus to produce an electrical field [41, 48].”
Shewanella secretes flavins that mediate extracellular electron transfer (2008, background): “15 A/m2) remain many orders of magnitude lower than what is obtained in chemical fuel cells ( 1,000 A/m2), similar to what has been observed for other microbial catalysts (13, 33).”