FUEL CELLS

It Started with SOFC

Nexceris has a rich heritage in solid oxide fuel cell (SOFC) technology development, and has established itself as a world leader in the field. Starting in the mid 1990’s, the initial focus of Nexceris on SOFC materials and components led to the launch and growth of fuelcellmaterials in 2000. Nexceris engineers have applied their ceramic materials skills to the fabrication of all types of SOFCs – planar and tubular, anode-supported, electrolyte-supported, and inert-supported configurations.

This experience enabled Nexceris to better understand technical issues being experienced by SOFC developers and to develop unique solutions to address these issues and to improve the quality and scope of fuelcellmaterials products, including the ChromLok™ and AlumiLok™ lines of corrosion-protective coatings.

Nexceris initiated its SOFC stack technology development work in 2006, following their development of novel electrolyte supported planar cell designs (now patented) with enabling attributes. These cell designs feature a thin electrolyte membrane layer that enables high performance and a dense cell periphery that provides an optimum sealing surface.

Applications

Nexceris has focused its SOFC stack development work on military applications where high power density, high efficiency, system simplicity and fuel flexibility are desired. A key Nexceris accomplishment was the development of anode technology with unprecedented tolerance to sulfur, which provides a path for SOFC operation on JP-8 fuels without desulfurization. Another important attribute of the Nexceris stack technology is the ability to operate at high single-pass fuel utilization – this greatly simplifies the system design. What follows are two recent examples of ongoing Nexceris SOFC stack technology development.

Nexceris is working with the U.S. Army (TARDEC) on a project aimed at the design, development and demonstration of a 5-kW scale, power dense and sulfur tolerant solid oxide fuel cell stack for military ground vehicle auxiliary power units. Employing Nexceris’ sulfur tolerant stack technology, the stack developed on this project will enable development of an SOFC system capable of operating with JP-8 logistic fuel.

Nexceris is working with the U.S. Air Force (AFRL) on a project aimed at design, development and demonstration of a high power density solid oxide fuel cell stack for military power applications including unmanned aerial systems, unmanned ground systems, vehicle auxiliary power and mobile power generation. The project targets a 2-kW scale SOFC stack with a gravimetric power density of 500 W/kg.

SOLID OXIDE FUEL CELLS

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