Geobacter spp. can acquire energy by coupling intracellular oxidation of organic matter with extracellular electron transfer to an anode (an electrode poised at a metabolically oxidizing potential), forming a biofilm extending many cell lengths away from the anode surface. It has been proposed that long-range electron transport in such biofilms occurs through a network of bound redox cofactors,...

Anode geometry can significantly affect the electrochemical synthesis of conductive polymers. Here, the effects of anode dimensions on the electropolymerization of pyrrole are investigated. Band microelectrodes were prepared with widths ranging from 2 to 500 mum. The anode dimension has a significant effect on the resulting thickness of polymer film. The electropolymerization process deviates s...

A high performance lithium anode is a key component for high energy density lithium batteries. Silicon based lithium anode materials are attractive for the lithium anode due to their high theoretical capacity. However, a severe problem is the huge volume change that occurs during cycling, resulting in a poor capacity retention. We have developed a silicon based anode that disperses silicon part...

The ability to accurately measure separate in situ anode and cathode overpotentials and impedance responses is still a source of debate when investigating fuel cells of planar configuration containing < 100 μm thickness solid electrolytes and when using the common three electrode arrangement. The results obtained in this study indicate that the overpotentials and impedances of the anode and cat...

The manuscript reports the simulation of an electron gun with a view to optimizing the design of radio-frequency sources. The effects of eight parameters on the beam quality were studied and optimal choices were identified. It gives numerical beam qualities in common electrostatic triode gun, and the dependences on design parameters such as electrode geometries and bias voltages to these electr...

This study was designed to examine the effects of electroacupuncture with direct current (DC) on peripheral nerve regeneration. The left sciatic nerve of 55 7-month-old rats was crushed at the thigh. They were ramdomly allocated to four groups: distal cathode DC group (n = 15), distal anode DC group (n = 14), sham operated group (n = 13), and control group (n = 13). In the distal cathode DC gro...

The upflow microbial fuel cell (MFC) system with membrane-free air-cathode was developed, and landfill leachate as fuel. The anode was made of stainless steel mesh filled with activated carbon, and carbon felt as the cathode. Electricity production performance of MFC with cylindrical stainless steel mesh anode filled with 0 (unfilled), 1mm, and 3mm cylindrical activated carbon particles was inv...

The possibility of substituting Pt/C with the hydrogen storage alloy MlNi3.6Co0.85Al0.3Mn0.3 as the anode active material of a proton exchange membrane fuel cell system has been analyzed. The electrochemical properties indicate that a much more electrochemically active anode is obtained by impregnating the active material loaded anode in a Nafion proton conducting polymer. Such performance impr...

Title of Document: IN SITU PROCESSING OF PtSn ELECTROCATALYSTS FOR CO TOLERANCE IN PEM FUEL CELLS Robert Utz, Master of Science, 2011 Directed By: Professor Greg Jackson Department of Mechanical Engineering Improved anode CO tolerance is a promising approach for integrating lowtemperature PEM fuel cells with hydrocarbon fuel processors in cost-effective systems for portable and stationary power...