Accession Number : ADA594306


Title :   Probing Single- to Multi-Cell Level Charge Transport in Geobacter sulfurreducens DL-1


Descriptive Note : Journal article


Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC CHEMISTRY DIV


Personal Author(s) : Jiang, Xiaocheng ; Hu, Jinsong ; Petersen, Emily R ; Fitzgerald, Lisa A ; Jackan, Charles S ; Lieber, Alexander M ; Ringeisen, Bradley R ; Lieber, Charles M ; Biffinger, Justin C


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a594306.pdf


Report Date : 08 Nov 2013


Pagination or Media Count : 7


Abstract : Microbial fuel cells, in which living microorganisms convert chemical energy into electricity, represent a potentially sustainable energy technology for the future. Here we report the single-bacterium level current measurements of Geobacter sulfurreducens DL-1 to elucidate the fundamental limits and factors determining maximum power output from a microbial fuel cell. Quantized stepwise current outputs of 92(+ or -33) and 196(+ or -20) fA are generated from microelectrode arrays confined in isolated wells. Simultaneous cell imaging/tracking and current recording reveals that the current steps are directly correlated with the contact of one or two cells with the electrodes. This work establishes the amount of current generated by an individual Geobacter cell in the absence of a biofilm and highlights the potential upper limit of microbial fuel cell performance for Geobacter in thin biofilms.


Descriptors :   *FUEL CELLS , BACTERIA , ELECTRIC CURRENT , ELECTROCHEMISTRY , ELECTRODES , ELECTRON TRANSFER , OUTPUT


Subject Categories : Biochemistry
      Microbiology
      Electrochemical Energy Storage


Distribution Statement : APPROVED FOR PUBLIC RELEASE