Electrochemical behaviour of LixNi1-xO in molten Li2CO3+Na2CO3 eutectic

被引：12

作者：

Tomczyk, P ^{[1
]}

Wyrwa, J ^{[1
]}

Mosialek, M ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Phys Chem, Molten Salts Lab, PL-30318 Krakow, Poland

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 463卷 / 01期

关键词：

molten carbonates; lithium incorporation and extraction; molten carbonate fuel cell;

D O I：

10.1016/S0022-0728(98)00442-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

To elucidate the mechanism of Li incorporation into NiO in molten carbonates, the open-circuit potential of the cell: O-2 + CO2 (g) \ Ni or Co oxide (s) \ Li2CO3 + Na2CO3 (1) \ Au (s) \ O-2 + CO2 (g) was examined for porous LixNi1-xO (0 less than or equal to x less than or equal to 0.5), LiCoO2 and Co3O4 electrodes. These studies and X-ray diffraction examination of the samples before and after submersion in carbonate melt indicated that LiNiO2 is formed in small amounts as an ultimate product of the reaction. Consequent extraction of Li+ ions from LiNiO2 formed this way occurs due to polarisation of the electrode by the electro-reduction of oxygen dissolved in molten carbonates and results in turn in partial decomposition of LiNiO2. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：78 / 86

页数：9

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