Mechanical strength of porous nickel plates containing lithium and their performance as the cathode for MCFC

Seung G. Kim, Sung Pil Yoon, Jonghee Han, SukWoo Nam, Tae Hoon Lim, In Hwan Oh, Seong A. Hong

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

To improve the mechanical properties of MCFC cathode materials, pre-lithiated porous nickel plates containing 1-5mol% of lithium were fabricated by the tape casting method, and the microstructures, mechanical properties, and performance was examined. The microstructure and pore distribution was not changed until the lithum content reached 3mol%. The sample containing 5mol% of lithium had patch structure on the skeleton and a smaller volume of primary pores. XRD analysis showed that lithium-containing porous nickel plates can easily form solid solutions without any undesirable byproducts after the oxidation. Both the bending strength and Young's modulus of the porous plates increased with the increase of lithium content. The average bending strengths of the samples containing 1, 3, and 5mol% of lithium were 1.29, 1.33, and 1.49kgf/mm2 which were 2.9, 3.0, and 3.4 times higher than that of pure porous nickel plate. The Young's modulus increased up to 1.35kgf/mm in the case of the 5 mol% lithium containing sample that is 5.4 times higher than that of pure porous nickel plate. The OCV of single cells using pre-lithiated cathodes were between 1.065 and 1.067 V, and comparable cell performance was obtained for 500 h of single cell operation.

Original languageEnglish
Pages (from-to)80-85
Number of pages6
JournalJournal of Power Sources
Volume110
Issue number1
DOIs
Publication statusPublished - 2002 Jul 20
Externally publishedYes

Fingerprint

nickel plate
Molten carbonate fuel cells (MCFC)
Nickel
Lithium
Strength of materials
Cathodes
lithium
cathodes
flexural strength
Bending strength
modulus of elasticity
Elastic moduli
cells
mechanical properties
porous plates
Porous plates
porosity
Mechanical properties
microstructure
Microstructure

Keywords

  • Cathode
  • Lithiated nickel oxide
  • MCFC
  • Mechanical strength
  • Single cell performance

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry

Cite this

Mechanical strength of porous nickel plates containing lithium and their performance as the cathode for MCFC. / Kim, Seung G.; Yoon, Sung Pil; Han, Jonghee; Nam, SukWoo; Lim, Tae Hoon; Oh, In Hwan; Hong, Seong A.

In: Journal of Power Sources, Vol. 110, No. 1, 20.07.2002, p. 80-85.

Research output: Contribution to journalArticle

Kim, Seung G. ; Yoon, Sung Pil ; Han, Jonghee ; Nam, SukWoo ; Lim, Tae Hoon ; Oh, In Hwan ; Hong, Seong A. / Mechanical strength of porous nickel plates containing lithium and their performance as the cathode for MCFC. In: Journal of Power Sources. 2002 ; Vol. 110, No. 1. pp. 80-85.
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