EFFECT OF LITHIUM-CARBONATE ON THE DENSIFICATION OF LIXNI1-XO SOLID-SOLUTIONS AT TEMPERATURES UP TO 900-DEGREES-C

被引：9

作者：

ANTOLINI, E

GIORDANI, M

机构：

[1] UNIV GENOA,FAC INGN,CTR INTERDIPARTIMENTALE INGN MAT,I-16129 GENOA,ITALY

[2] UNIV GENOA,FAC INGN,IST CHIM,I-16129 GENOA,ITALY

来源：

MATERIALS LETTERS | 1991年 / 12卷 / 1-2期

关键词：

D O I：

10.1016/0167-577X(91)90069-I

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

LixNi1-xO solid solutions are of interest as cathodes for molten carbonate fuel cells. Specimen (plaque) diameter changes (PDC) and density changes of Ni/Li2CO3 composites following heat treatment were determined as a function of starting composition and sintering temperature so as to determine the densification mechanism. For temperatures above 700-degrees-C the mixtures containing more than 12 mol% of Li+ showed a decrease in PDC and an increase in density with increase in temperature. The behavior of high-lithium-content mixtures is attributed to the presence of a reactive liquid phase of undecomposed lithium carbonate at temperatures > 723-degrees-C, which promotes sintering.

引用

页码：117 / 122

页数：6

共 10 条

[1] ON THE ROLE OF LITHIUM-CARBONATE IN THE PREPARATION OF DOPED NICKEL-OXIDE CATHODES FOR MOLTEN CARBONATE FUEL-CELLS [J].