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On charging, iron is plated onto the particles. The slurry electrode is made by flowing electrically conductive particles in an electrolyte containing the dissolved iron species. In order to decouple the energy and power ratings and regain the economic advantages of a flow battery, a slurry electrode design was more » proposed for use as the negative electrode. Because iron is plated at the negative electrode during charging, conventional electrode structures couple the energy storage capacity and the power rating of the battery. During charging, ferrous iron (Fe 2+) is oxidized to ferric iron (Fe 3+) at the positive electrode while it (Fe 2+) is reduced to form iron metal (Fe 0) at the negative electrode. = ,Ī new flow battery was proposed that utilizes low cost materials: iron as the only active element, cheap aqueous electrolytes, and inexpensive separators. Project publications and presentations are listed in the Appendix. DE-EE0005253) and constitutes the “Final Scientific Report” deliverable. This report represents a summary of contract activities and findings under SA’s five year contract to more » the US Department of Energy (Award No. Since SA coordinated the project activities of all three organizations, this report includes a technical description of all project activity. (SA) and aided by Rajesh Ahluwalia and Thanh Hua from Argonne National Laboratory (ANL) and Lin Simpson at the National Renewable Energy Laboratory (NREL). The project was led by Strategic Analysis Inc.
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The cost breakdown of the system components and manufacturing steps can then be used to guide future research and development (R&D) decisions. Furthermore, the project forecasts the cost of these systems at a variety of annual manufacturing rates to allow comparison to the overall 2017 and “Ultimate” DOE cost targets. This cost assessment project supports the overall FCTO goals by identifying the current technology system components, performance levels, and manufacturing/assembly techniques most likely to lead to the lowest system storage cost. Consequently, FCTO has established targets to chart the progress of developing and demonstrating viable hydrogen storage technologies for transportation and stationary applications.
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The Fuel Cell Technologies Office (FCTO) has identified hydrogen storage as a key enabling technology for advancing hydrogen and fuel cell power technologies in transportation, stationary, and portable applications.