COLL 591 |
| We will describe the technical performance, scalability and competitiveness of a novel direct carbon utilization fuel cell (DCFC) based on a solid oxide ion conducting electrolyte (typically yitria stabilized zirconia) and a liquid anode (for example, eutectic mixtures of molten alkali carbonates). Electricity is generated through the direct electrochemical oxidation of carbon at 700-950„aC with the release of electrons. Fuel and oxygen (air) are supplied continuously to the system. Many forms of carbon fuel (including carbon black, coal, tar, petroleum coke, biomass and waste paper/plastic) without any pretreatment have been tested and yield power densities >120 mW/cm2. Fuel oxidation products (CO2) and potentially toxic byproducts are captured internally in a pure and concentrated form. The system is based on proven technologies, is straightforward to construct and readily scalable to many hundreds of kilowatts. Calculated system efficiencies are greater than 70%. Finally, our demonstrated system overcomes many of the limitations of existing DCFC concepts. |
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Surface Chemistry Symposium in Honor of Gabor Somorjai
2:00 PM-5:20 PM, Thursday, 14 September 2006 Sir Francis Drake -- Franciscan Room, Oral
Division of Colloid & Surface Chemistry |