IMPROVED OXYGEN REDUCTION ELECTROCATALYSTS Sandia National Laboratories has developed non-precious metal fuel cell cathode electrocatalysts for improved oxygen reduction. Catalysts are designed macrocycles with steric pocket to enhance oxygen binding. Sandia National Laboratories has demonstrated deep expertise in computer-aided molecular design (CAMD) and structure optimization. Synthesis and testing are integrally coupled to the design efforts for iterative improvements in design. Significant depth and leveraging of CAMD and macrocycle design, synthesis and testing. Important applications include: Fuel cells, sensors, batteries, biomedical and pharmaceutical designs. Potential Benefits New and improved low-temperature PEM and alkaline fuel cells. Improved performance of the cathode kinetics translates directly into improved system efficiency, and the use of non-precious metal electrocatalysts means lower cost. Demonstrated Achievements We have demonstrated first generation electrocatalysts simply wetted onto porous carbon electrodes for performance testing. The next generation will likely incorporate designs permitting covalent attachment to electrode surface for enhanced performance and longer term testing. Follow-up This proprietary Sandia capability may be applied to solve challenging problems in the field of polymer and other organic sciences. Sandia has the flexibility to form specific teams of technical experts from any or all of the above capabilities to focus expertise on specific technical challenges. We are interested in making this technology available to companies responsive to partnering with Sandia to develop near/term and/or future applications via licensing or cooperative development agreements. For further information, please respond by mail or fax to Joanne Trujillo no later than December 24, 1998 at: Sandia National Laboratories, MS 1380, P. O. Box 5800, Albuquerque, New Mexico 87185-1380. Fax: (505) 843-4163. Please indicate the date and title of this CBD notice. E-MAIL: Joanne Trujillo, jmtruji@sandia.gov. Posted 12/10/98 (W-SN279312).

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