Nafion Resins: Novel Device Applications

PDF Publication Title:

Nafion Resins: Novel Device Applications ( nafion-resins-novel-device-applications )

Next Page View | Return to Search List

Text from PDF Page: 001

Proceedings of the 2002 U.S. DOE Hydrogen Program Review LOW COST, HIGH EFFICIENCY REVERSIBLE FUEL CELL SYSTEMS Dr. Christopher E. Milliken, Materials Group Leader Dr. Robert C. Ruhl, Vice President, Technology Technology Management Inc. 9718 Lake Shore Boulevard Cleveland, Ohio 44108 216-541-1000 Abstract Fuel cell technologies are described in the 2001 DOE Hydrogen Program Annual Operating Plan as "cost effective, highly efficient, and critical for overall success in the Hydrogen Program Strategic Plan". Fuel cells which operate on fossil fuels as well as on hydrogen serve as a transitional technology, as the world moves away from fossil fuels, and as an end point technology, for the production and utilization of Hydrogen. The TMI reversible fuel cell – electrolyzer system employs a high temperature solid-oxide based electrochemical process to produce electricity from common hydrocarbon fuels (e.g., natural gas, propane, and bio-derived fuel) as well as hydrogen. In electrolyzer mode, the reversible system uses electricity and thermal energy to convert pure water into fuel (hydrogen and oxygen). TMI’s reversible system uses the waste thermal energy produced during electricity generation mode to achieve high systems efficiency during electrolysis mode, ultimately lowering product life cycle costs for the combined system. To further increase systems efficiency, TMI has adopted a ‘passive’ cell design which minimizes balance of plant components During this phase, TMI demonstrated passive reversible cells and stacks that met many of the performance targets including reversible efficiency and life. Several conditions were evaluated to understand the sensitivity of performance on operating variables such as temperature and current density. The highest reversible efficiency (DCVolts_Out / DCVoltage_In) measured was 90.8% at 925°C and 50 mA/cm2. A five cell stack was operated at < 2% / 1000 hours voltage degradation in fuel cell mode for over 1200 hours. Data from this work was used to inform economic and engineering studies during Phase II. A versatile product line was envisaged, with the capability of delivering 5000 psi pure hydrogen for vehicle uses in addition to electric power and recovered usable heat. The proposed modular systems have high expected reliability and could be sized for either residential or commercial applications (including “power parks”) being fed by electric power (renewable or low-cost grid) and/or fuel (fossil or biomass-derived). 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 potential for the TMI fuel cell - electrolyzer reversible system to set new performance standards, applicable to most alternative technologies, for achieving lower cost of H2 production, lower pollution levels, and potentially serving as an enabling technology for hydrogen fuel cells. NREL/CP-610-32405 1

PDF Image | Nafion Resins: Novel Device Applications


PDF Search Title:

Nafion Resins: Novel Device Applications

Original File Name Searched:


DIY PDF Search: Google It | Yahoo | Bing

SeaMerlin The SeaMerlin Engine is a water based gas leverage turbine for marine propulsion, seawater distillation, oceanwater CO2 harvesting, and more.

About: More about Infinity Turbine and the quest for the Xprize... More Info

Strategy and Consulting Services: Renewable energy strategy, Organic Rankine Cycle, CO2 energy, and Sonification technology consulting... More Info

@elonmusk XPrize $100 million CO2 Challenge: Carbon Removal Prize Challenge Sponsored by Elon Musk... More Info

CO2 Phase Change Demonstrator: Experiment with gas to liquids (CO2 to alcohol) using Nafion and our phase change demonstrator cart (we can ship worldwide)... More Info

CO2 GTL Gas to Liquids Experimental Platform: Experiment with gas to liquids (CO2 to alcohol) using Nafion (electrolyzer membrane) and our phase change demonstrator cart (we can ship worldwide). CO2 goes supercritical at 31 C. This is a experimental platform which you can use to demonstrate phase change with low heat. Includes integration area for small CO2 turbine, static generator, Nafion pellets, Nafion membrate, or Nafion tubes... More Info

Concept: The concept of the SeaMerlin Engine is to convert or supplement existing marine vessel propulsion to a gas leverage turbine which scavenges CO2 from saltwater at the same time it provides vessel thrust.

CONTACT TEL: 608-238-6001 Email: greg@seamerlin.com | RSS | AMP