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Proceedings of the 2002 U.S. DOE Hydrogen Program Review $0.080 $0.070 $0.060 $0.050 $0.040 $0.030 $0.020 $0.010 $0.000 0 1 2 3 4 5 6 7 8 9 10 Input Power Cost, Cents per kWh FIGURE 8. HYDROGEN COST VS INPUT POWER COST Conclusions and Recommendations The program has met or exceeded all technical objectives (as revised by DOE Hydrogen Program management) on budget and on time. Experimental results have been promising. The economic / engineering studies indicate the potential for reversible systems to set new standards of performance, achieving lower cost of H2 production, lower pollution levels, and potentially serving as an enabling technology for hydrogen fuel cells. Future work should build upon the results from this phase and strive toward a larger scale technology demonstration. At the stack level, technical goals include achieving: 1.) negligible gas leakage rates, 2.) reduced polarization voltages, 3.) improved microstructures, and 4.) reproducible fabrication techniques. While low gas leakage rates have been demonstrated, additional work is required to improve reproducibility. Reduced polarization voltages will require optimizing electrode microstructure and continuing to improve the interface with the separator. Improved microstructure can be addressed through materials and processing improvements. Reproducible fabrication can be achieved through a combination of enhanced inspection techniques, data analysis, and mechanized production methods. At the system level, a demonstration reactor of sufficient size to demonstrate technology proof- of-concept should be designed, built, and operated. The design of the hot subassembly will be based upon engineering designs developed by TMI over the past 10 years and will include the understandings from the work presented above and new learning from advanced stack development. NREL/CP-610-32405 13 Hydrogen Cost per MilePDF Image | Nafion Resins: Novel Device Applications
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