Accession Number : ADA594746


Title :   Microbial Fuel Cells for Powering Navy Devices


Descriptive Note : Formal rept. 12 Jan-31 Dec 2011


Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC


Personal Author(s) : Tender, Leonard M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a594746.pdf


Report Date : 20 Jan 2014


Pagination or Media Count : 45


Abstract : Microbial fuel cells (MFCs) are fuel cells that generate electrical power by using microorganisms to catalyze the anode reaction. In theory, they can range in scale from less than 1 W to more than 1 MW. They promise relatively high energy density (Wh/L) compared to lithium batteries and hydrogen/oxygen fuel cells and relatively high specific energy (Wh/kg) compared to lithium batteries by using nonexplosive biomass-derived organic matter as fuel, such as glucose and acetate. While they promise relatively low power density (W/L) and low specific power (W/kg) owing to relatively low rates of microbe-catalyzed anode reactions, recent advancements indicate that power densities comparable to alkaline batteries are within reach. They are therefore being investigated primarily for low power consuming, long duration applications such as remotely deployed sensors, for which they may prove superior to existing power supplies when fully developed. MFCs for such applications are estimated here to be at technology readiness level (TRL) 3. MFCs are also being investigated to generate electrical power from the biomass content of wastewater (i.e., sewage) in order to offset energy consumption of wastewater treatment processes. MFCs for this application are estimated to be at TRL 4.


Descriptors :   *ELECTRIC POWER , *FUEL CELLS , *MICROORGANISMS , *NAVAL EQUIPMENT , *POWER SUPPLIES , ACETATES , BIOMASS CONVERSION , ENERGY DENSITY , GLUCOSE , HIGH ENERGY , HYDROGEN OXYGEN FUEL CELLS , LITHIUM BATTERIES , LOW POWER , STORAGE BATTERIES


Subject Categories : Electric Power Production and Distribution
      Electrochemical Energy Storage
      Logistics, Military Facilities and Supplies


Distribution Statement : APPROVED FOR PUBLIC RELEASE