Vertically grown multiwalled carbon nanotube anode and nickel silicide integrated high performance microsized (1.25 μl) microbial fuel cell
KAUST DepartmentElectrical Engineering Program
Integrated Nanotechnology Lab
Physical Sciences and Engineering (PSE) Division
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Environmental Science and Engineering Program
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AbstractMicrobial fuel cells (MFCs) are an environmentally friendly method for water purification and self-sustained electricity generation using microorganisms. Microsized MFCs can also be a useful power source for lab-on-a-chip and similar integrated devices. We fabricated a 1.25 μL microsized MFC containing an anode of vertically aligned, forest type multiwalled carbon nanotubes (MWCNTs) with a nickel silicide (NiSi) contact area that produced 197 mA/m 2 of current density and 392 mW/m 3 of power density. The MWCNTs increased the anode surface-to-volume ratio, which improved the ability of the microorganisms to couple and transfer electrons to the anode. The use of nickel silicide also helped to boost the output current by providing a low resistance contact area to more efficiently shuttle electrons from the anode out of the device. © 2012 American Chemical Society.
SponsorsWe thank Prof. Gary Amy, Director, Water Desalination and Reuse Center (KAUST) for useful technical discussion, Miss Kelly Rader for logistic support, Water Desalination and Reuse Center (WDRC, KAUST) for lab facility, and Global Collaborative Research (GCR) of King Abdullah University of Science and Technology for providing generous financial support.
PublisherAmerican Chemical Society (ACS)
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