High Power, Low Cost Solid Oxide Fuel Cell Stacks for Robust and Reliable Distributed Generation Email Page
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Performer:  Redox Power Systems, LLC Location:  College Park, Maryland
Project Duration:  10/01/2015 – 06/30/2019 Award Number:  FE0026189
Technology Area:  Solid Oxide Fuel Cells Total Award Value:  $3,125,000
Key Technology:  Cell Technology DOE Share:  $2,500,000
Performer Share:  $625,000

Redox 25 kW Cube System
Redox 25 kW Cube System

Project Description

Redox Power Systems, LLC (Redox) will collaborate with the University of Maryland Energy Research Center (UMERC) and the Center for Advanced Life Cycle Engineering (CALCE) to improve the performance and reliability and reduce the stack costs of Redox's high power density, low cost, natural gas fueled, intermediate-temperature solid oxide fuel cell (SOFC) stack operating between 550 and 650°C. Redox will also scale its stacks to 5-10 kW units. The project specifically emphasizes the systematic investigation of SOFC degradation mechanisms for the Redox technology from the cell to the stack scale, as well as the development of relevant solutions. The cells use a proprietary ceria/bismuth-oxide bilayer electrolyte that improves the open circuit voltage compared to ceria-only electrolytes at 550 to 650°C. This voltage improvement boosts efficiency while maintaining a low area-specific resistance that results in high power densities (peak ≥ 2 W/cm2 at 650°C) and lower cost (e.g., fewer cells, seals, gaskets, and interconnects per kW). This project will also leverage work performed by the University of Maryland under DOE contract DE-FE0009084.

Project Benefits

Redox's research will ultimately result in a low cost and more reliable, robust, and durable 5-10 kW stack for natural gas fueled distributed generation with high volume production manufacturing cost estimates. The project team will also demonstrate a 20 percent reduction in the current DOE cost target via a detailed cost analysis based on Redox's advanced, high power density, lower temperature cell technology and its proven manufacturing processes and commercial partners.

Presentations, Papers, and Publications

Contact Information

Federal Project Manager Seth Lawson: seth.lawson@netl.doe.gov
Technology Manager Shailesh Vora: shailesh.vora@netl.doe.gov
Principal Investigator Bryan Blackburn: bryan@redoxenergy.com