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Small Business Innovation Research/Small Business Tech Transfer

Low Temperature, High Energy Density Micro Thin Film Solid Oxide Fuel Cell

Completed Technology Project

Project Description

Low Temperature, High Energy Density Micro Thin Film Solid Oxide Fuel Cell
A new type of solid oxide fuel cell based on thin film technology and ultra-thin electrolyte is being proposed to develop to realize major reductions in fuel cell size, weight, and operating temperature, while significantly increasing power density. The thin film fuel cell is comprised of a micro-thin electrolyte (thickness ~ 1¿¿m) that is grown on a foil nickel substrate. The nickel substrate is then made into a porous anode by lithographic patterning and etching of the foil. The SOFC structure is completed by the deposition of a thin-film mixed ionic-electronic conducting oxide cathode on the electrolyte. Preliminary data has shoen the thin film fuel cell to have an output of ~ 100mA/cm2 at temperatures as low as 500C – more than 400C lower than for typical bulk SOFC's. A single cell has a total thickness of 15-20 micron, and the integration of interconnects to the cells to form a stack is projected to result in a cell power density of > 5W/cm3 – more than 20x greater than typical SOFC's. More »

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Primary U.S. Work Locations and Key Partners

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This is a historic project that was completed before the creation of TechPort on October 1, 2012. Available data has been included. This record may contain less data than currently active projects.