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michka:research:microbial_fuel_cells [2014-07-03 13:14] – nikmichka:research:microbial_fuel_cells [2014-07-11 10:30] – michka
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 (see also [[:fuel_cell]] for futher info...) (see also [[:fuel_cell]] for futher info...)
  
-====Two containers + Air Pump Design====+====From Litterature==== 
 + 
 +===Two containers + Air Pump Design===
  
 [[http://www.instructables.com/id/DIY-Microbial-Fuel-Cell-easy/|This design]] is made of two containers, bridged together with a salt bridge (rope dipped in saturated salted water, wrapped in insulating tape), one with pond sludge, another with clear water. [[http://www.instructables.com/id/DIY-Microbial-Fuel-Cell-easy/|This design]] is made of two containers, bridged together with a salt bridge (rope dipped in saturated salted water, wrapped in insulating tape), one with pond sludge, another with clear water.
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 Performances: 6V peaks, 200+ mA with airpump, 170 mA without. Performances: 6V peaks, 200+ mA with airpump, 170 mA without.
  
-====One container Design====+===One container Design===
  
 [[http://www.treehugger.com/slideshows/gadgets/make-microbial-fuel-cell/page/1/#slide-top|This design]] is made from one container, sludge at the bottom, smart gel proton exchanger on top of it, and clean water on the very top. No air pump, but lower performances. Something like charcoal is used as an electrode material. [[http://www.treehugger.com/slideshows/gadgets/make-microbial-fuel-cell/page/1/#slide-top|This design]] is made from one container, sludge at the bottom, smart gel proton exchanger on top of it, and clean water on the very top. No air pump, but lower performances. Something like charcoal is used as an electrode material.
  
-====Design Improvements====+====Experiments==== 
 + 
 +===One Container Design=== 
 + 
 +Wiring as electrode. 
 + 
 +==Results== 
 + 
 +Voltage changes with oxygenation. 
 + 
 +===One Container in Crate Design=== 
 + 
 +==Why ?== 
 + 
 +Augemented cathode surface area & reduced water layer width for oxygen access. 
 + 
 +===Crate Paper Design=== 
 + 
 +   * Flattened aluminium can as electrode. 
 +   * Thick paper sheet as PEM. 
 + 
 +==Why?== 
 + 
 +   * Reduced PEM width. 
 +   * Augmented electrode (both) surface area. 
 + 
 +==Results== 
 + 
 +   * Negative voltage when putting a rock on cathode to maintain it in water. 
 + 
 +===Two Containers Design=== 
 + 
 +Hard-drive metal box as electrode material. 
 + 
 +===Other results=== 
 + 
 +   * Two multimeter electrodes directly in water: about 30 mV. 
 +   * One mutimeter electrode on aluminium can dipped in water, one directly in water: about 30 mV. 
 +     * If water is not clean, voltage increases up to 100 mV. 
 +   * Two multimeter electrodes in the mud: 10-80 mV depending on location. 
 + 
 +====Design Improvements Ideas====
  
 ===Airpump=== ===Airpump===
  • michka/research/microbial_fuel_cells.txt
  • Last modified: 2018-04-26 12:44
  • by michka