PDF Publication Title:
Text from PDF Page: 022
but periodically reversed current direction and operated it as an SOFC. The 5-cell stack exhibited good reversible behavior with the slope of the voltage-versus-current (VI) plot for the SOFC mode being the same as the VI plot for the SOEC mode of operation. This is the behavior desired for a good reversible SOFC/SOEC. MSRI summarized their presentation with the following bullets. • Reversible SOFC/SOEC shows logical promise for storing renewable electricity/energy. • But for a near-term target, smaller units for distributed/decentralized storage may make more sense. • Due to the different operation mechanisms between SOFC and SOEC, cell materials developed for SOFC may not be suitable for SOEC applications. • SOECs typically show a higher degradation rate than SOFCs. • MSRI has investigated and developed high-performance material sets for reversible SOFC/SOEC applications. • With knowledge gained from the accumulated 10,000 stack-hours tests, MSRI has successfully reduced the SOEC stack degradation rate from initial 30%/1,000 h to <2%/1,000 h. • Fundamental studies of cell materials are needed to further improve reversible SOFC/SOEC performance. Versa Power Systems, Inc. Casey Brown delivered the Versa presentation, slides from which can be found in Appendix D. As with all the presentations, Casey began his presentation speaking about the company and its history doing SOFC and SOEC work. Versa has a history of SOFC development reaching back to the mid-1990s and has been a subcontractor under the SECA program since 2001. Current activities at Versa include a broad portfolio of projects on SOFC, SOEC, and reversible SOFC/SOEC. The basic design of the Versa SOFC is similar to that used by MSRI; anode supported cells, thin yttria-stabilized zirconia electrolyte, and a mixed ionic/electronic conducting ceramic as the cathode. However, unlike MSRI, Versa has a manufacturing facility located in Calgary, Canada, capable of fabricating several megawatts of SOFC components per year. As with most SOFC developers, Versa has made great strides reducing stack degradation in the fuel cell mode. In 2009 Versa reported a 0.45% degradation rate for a 28-cell (about 1-kW) SOFC stack that had run continuously for more than 18,000 hours. However, as with other developers, when a 28-cell stack assembled from similar materials was tested as an SOEC, it had a degradation rate of about 3.8% per 1,000 hours. Versa also shared the results of work on reversible SOFC/SOEC. Versa reported results for a single cell test in which the cell was cycled between SOFC mode and SOEC mode once per day for more than 100 days. The results, shown in Figure 4, are interesting in that a slightly higher rate of decay was shown for the cell when operating in SOFC mode. However, the degradation was a factor of 4 higher than observed for similar cells operated only as a fuel cell. 18PDF Image | Reversible Fuel Cells Workshop Summary Report
PDF Search Title:
Reversible Fuel Cells Workshop Summary ReportOriginal File Name Searched:
rev_fc_wkshp_report.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)