Lg Fuel Cell Systems Inc.

Medical University of South Carolina

Hwa Young Jung

Zhien Liu

Richard W Goettler

Minjae Jung

Zhengliang Xing

Rich Goettler

Xiao-Dong Zhou

Emir Dogdibegovic

In some embodiments, a solid oxide fuel cell comprising an anode, an electrolyte, cathode barrier layer, a nickelate composite cathode separated from the electrolyte by the cathode barrier layer, and a cathode current collector layer is provided. The nickelate composite cathode includes a nickelate compound and second oxide material, which may be an ion conductor. The composite may further comprise a third oxide material. The composite may have the general formula (LnM1M2)(NiN)O-ABO&#x2014;CDCeO, wherein A and B may be rare earth metals excluding ceria.

Composition of a nickelate composite cathode for a fuel cell

In some embodiments, a solid oxide fuel cell comprising an anode, an electrolyte, cathode barrier layer, a nickelate composite cathode separated from the electrolyte by the cathode barrier layer, and a cathode current collector layer is provided. The nickelate composite cathode includes a nickelate compound and second oxide material, which may be an ion conductor. The composite may further comprise a third oxide material. The composite may have the general formula (LnM1M2)(NiN)O-ABO-CDCeO, wherein A and B may be rare earth metals excluding ceria.

In some examples, a fuel cell comprising an anode; an electrolyte; cathode barrier layer; and a nickelate composite cathode separated from the electrolyte by the cathode barrier layer; and a cathode current collector layer. The nickelate composite cathode includes a nickelate compound and an ionic conductive material, and the nickelate compound comprises at least one of PrNiO, NdNiO, (PrNd)NiO, (PrNd)NiO, (PrNd)NiO, or (PrNdM)NiO, where M is an alkaline earth metal doped on an A&#x2014;site of Pr and Nd. The ionic conductive material comprises a first co-doped ceria with a general formula of (AB)CeO, where A and B of the first co-doped ceria are rare earth metals. The cathode barrier layer comprises a second co-doped ceria with a general formula (AB)CeO, where at least one of A or B of the second co-doped ceria is Pr or Nd.

Composition for fuel cell electrode

In some examples, a fuel cell including an anode; electrolyte; and cathode separated from the anode by the electrolyte, wherein the cathode includes a Pr-nickelate based material with (PrA)(NiB)Oas a general formula, where n is 1 as an integer, A is an A-site dopant including of a metal of a group formed by one or more lanthanides, and B is a B-site dopant including of a metal of a group formed by one or more transition metals, wherein the A and B-site dopants are provided such that there is an increase in phase-stability and reduction in degradation of the Pr-nickelate based material, and A is at least one metal cation of lanthanides, La, Nd, Sm, or Gd, B is at least one metal cation of transition metals, Cu, Co, Mn, Zn, or Cr, where: 0&#x3c;x&#x3c;1, and 0&#x3c;y&#x2264;0.4.

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Canton, OH, United States of America

Hwa Young Jung