U.S. Department of Energy

Battelle Memorial Institute

Ut-battelle, Inc.

The United States of America As Represented by the Department of Energy

Wayne A Surdoval

David A Berry

Dushyant Shekhawat

Jeffry W Stevenson

Nicholas S Siefert

Travis Shultz

Ze Liu

Joseph Thomas Muth

Meilin Liu

Beth Louise Armstrong

Mingfei Liu

Edgar Lara-Curzio

Amit Shyam

Yanli Wang

Lane Wilson

Mohammad A Khaleel

Lifang Nie

David Spencer Mebane

Elizabeth V Stephens

Xin Sun

Wenning Liu

Rosa M Trejo

Yeong Shyung Chou

The disclosure provides a SOFC comprised of an electrolyte, anode, and cathode, where the cathode comprises an MIEC and an oxygen-reducing layer. The oxygen-reducing layer is in contact with the MIEC, and the MIEC is generally between and separating the oxygen-reducing layer and the electrolyte. The oxygen-reducing layer is comprised of single element oxides, single element carbonates, or mixtures thereof, and has a thickness of less than about 30 nm. In a particular embodiment, the thickness is less than 5 nm. In another embodiment, the thickness is about 3 monolayers or less. The oxygen-reducing layer may be a continuous film or a discontinuous film with various coverage ratios. The oxygen-reducing layer at the thicknesses described may be generated on the MIEC surface using means known in the art such as, for example, ALD processes.

Solid oxide fuel cell cathode with oxygen-reducing layer

A seal for a solid oxide fuel cell includes a glass matrix having glass percolation therethrough and having a glass transition temperature below 650&#xb0; C. A deformable second phase material is dispersed in the glass matrix. The second phase material can be a compliant material. The second phase material can be a crushable material. A solid oxide fuel cell, a precursor for forming a seal for a solid oxide fuel cell, and a method of making a seal for a solid oxide fuel cell are also disclosed.

Engineered glass seals for solid-oxide fuel cells

The disclosure provides a gasification process for the production of a methane-rich syngas at temperatures exceeding 400&#xb0; C. through the use of an alkali hydroxide MOH, using a gasification mixture comprised of at least 0.25 moles and less than 2 moles of water for each mole of carbon, and at least 0.15 moles and less than 2 moles of alkali hydroxide MOH for each mole of carbon. These relative amounts allow the production of a methane-rich syngas at temperatures exceeding 400&#xb0; C. by enabling a series of reactions which generate Hand CH, and mitigate the reforming of methane. The process provides a methane-rich syngas comprised of roughly 20% (dry molar percentage) CHat temperatures above 400&#xb0; C., and may effectively operate within an IGFC cycle at reactor temperatures between 400-900&#xb0; C. and pressures in excess of 10 atmospheres.

Methane-rich syngas production from hydrocarbon fuels using multi-functional catalyst/capture agent

The disclosure provides a gasification process for the production of a methane-rich syngas at temperatures exceeding 700&#xb0; C. through the use of an alkali hydroxide MOH, using a gasification mixture comprised of at least 0.25 moles and less than 2 moles of water for each mole of carbon, and at least 0.15 moles and less than 2 moles of alkali hydroxide MOH for each mole of carbon. These relative amounts allow the production of a methane-rich syngas at temperatures exceeding 700&#xb0; C. by enabling a series of reactions which generate Hand CH, and mitigate the reforming of methane. The process provides a methane-rich syngas comprised of roughly 20% (dry molar percentage) CHat temperatures above 700&#xb0; C., and may effectively operate within an IGFC cycle at reactor temperatures between 700-900&#xb0; C. and pressures in excess of 10 atmospheres.

Production of methane-rich syngas from hydrocarbon fuels using multi-functional catalyst/capture agent

Solid-oxide fuel cells include an electrolyte and an anode electrically coupled to a first surface of the electrolyte. A cathode is provided, which is electrically coupled to a second surface of the electrolyte. The cathode includes a porous backbone having a porosity in a range from about 20% to about 70%. The porous backbone contains a mixed ionic-electronic conductor (MIEC) of a first material infiltrated with an oxygen-reducing catalyst of a second material different from the first material.

Solid oxide fuel cells having porous cathodes infiltrated with oxygen-reducing catalysts

A surface modification to prevent oxide scale spallation is disclosed. The surface modification includes a ferritic stainless steel substrate having a modified surface. A cross-section of the modified surface exhibits a periodic morphology. The periodic morphology does not exceed a critical buckling length, which is equivalent to the length of a wave attribute observed in the cross section periodic morphology. The modified surface can be created using at least one of the following processes: shot peening, surface blasting and surface grinding. A coating can be applied to the modified surface.

Surface modification to prevent oxide scale spallation

Growing community of inventors

Monroeville, PA, United States of America

Wayne A Surdoval