Development of passive hydrogen separation membranes made from Co-synthesized nanoscale cermet powders

John S. Hardy, Edwin C. Thomsen, Nathan L. Canfield, Jarrod V. Crum, K. Scott Weil, Larry R. Pederson

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A powder comprised of nickel oxide and proton-conducting Nd- and Zr-doped barium cerate with a particle size on the order of 10 nm has been co-synthesized using the glycine-nitrate combustion process. The two compositions are intimately mixed with no significant elemental substitution between them after synthesis. To ensure complete reaction of the cerate components, the synthesized powder must be calcined at 1000 {ring operator} C. Among the barium cerate compositions investigated, the 30% Zr- and 15% Nd-doped material exhibited the best combination of chemical stability in CO2 and conductivity in hydrogen environments. At least 35 vol% Ni is required to achieve percolation in the composites. When sintering is carried out in an atmosphere which promotes reduction of nickel oxide to nickel metal, the result is a mixed electronic- and protonic-conducting composite which has potential use as a hydrogen separation membrane. Composites with a relative density of 99.2% and nanoscale grains have been prepared by hot pressing.

Original languageEnglish
Pages (from-to)3631-3639
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume32
Issue number16
DOIs
Publication statusPublished - Nov 2007
Externally publishedYes

Fingerprint

Cermet Cements
Powders
Hydrogen
Nickel oxide
nickel oxides
Barium
membranes
Membranes
barium
composite materials
Composite materials
hydrogen
conduction
hot pressing
Chemical stability
Hot pressing
glycine
Nickel
Chemical analysis
Nitrates

Keywords

  • Cerate
  • Cermet
  • Composite
  • Gas separation
  • Hydrogen
  • Ionic conduction
  • Membrane
  • Nanoscale
  • Nickel
  • Percolation
  • Proton
  • Synthesis

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

Cite this

Development of passive hydrogen separation membranes made from Co-synthesized nanoscale cermet powders. / Hardy, John S.; Thomsen, Edwin C.; Canfield, Nathan L.; Crum, Jarrod V.; Scott Weil, K.; Pederson, Larry R.

In: International Journal of Hydrogen Energy, Vol. 32, No. 16, 11.2007, p. 3631-3639.

Research output: Contribution to journalArticle

Hardy, John S. ; Thomsen, Edwin C. ; Canfield, Nathan L. ; Crum, Jarrod V. ; Scott Weil, K. ; Pederson, Larry R. / Development of passive hydrogen separation membranes made from Co-synthesized nanoscale cermet powders. In: International Journal of Hydrogen Energy. 2007 ; Vol. 32, No. 16. pp. 3631-3639.
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