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Titolo:
A new candidate material for molten carbonate fuel cell cathodes
Autore:
Fang, BZ; Chen, H;
Indirizzi:
Zhuzhou Engn Coll, Key Lab New Packaging Mat & Technol, Hunan 412008, Peoples R China Zhuzhou Engn Coll Hunan Peoples R China 412008 n 412008, Peoples R China
Titolo Testata:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
fascicolo: 1-2, volume: 501, anno: 2001,
pagine: 128 - 131
Fonte:
ISI
Lingua:
ENG
Keywords:
nickel-niobium alloy; nickel oxide; cathode; equilibrium solubility; molten carbonate fuel cell;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Fang, BZ IRI, Dept Chem Res, 1201 Takada, Chiba 2770861, Japan IRI 1201 Takada Chiba Japan 2770861 Takada, Chiba 2770861, Japan
Citazione:
B.Z. Fang e H. Chen, "A new candidate material for molten carbonate fuel cell cathodes", J ELEC CHEM, 501(1-2), 2001, pp. 128-131

Abstract

In this study the performance of a novel candidate material for the cathode of molten carbonate fuel eels (MCFCs), pre-oxidized nickel-niobium surface alloy, was investigated under various MCFC cathode conditions by the determination of the equilibrium solubility of nickel ions in the carbonate melt. The following conclusions can be drawn: (1) under a cathode atmosphere of p(CO2)/p(O-2) = 0.67/0.33 atm, the equilibrium solubility of nickel ions in (Li-0.62, K-0.38)(2)CO3 melt at 650 degreesC is about 17 x 10(-6) mol fraction for the nickel oxide electrode and 8 x 10(-6) mol fraction for the pre-oxidized nickel-niobium alloy electrode; (2) under the selected MCFC cathode atmospheres with partial pressure of CO2 varying from 0.1 to 0.7 arm the dissolution reaction of NiO can be expressed as follows: NiO(s) + CO2(Q)= Ni2+ (1) + CO32-; and (3) temperature has less influence on the equilibrium solubility of the pre-oxidized nickel-niobium surface alloy electrode than on that of the NiO electrode. As far as the equilibrium solubility of nickel ions in the carbonate melt is concerned, the pre-oxidized nickel-niobium alloy can be considered as a candidate material for the cathode of MCFCs. (C) 2001 Published by Elsevier Science B.V.

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Documento generato il 03/04/20 alle ore 07:34:09