XPS study of titanium species exposed to molten Li2CO3-Na2CO3 in the anodic conditions used in molten carbonate fuel cells

被引：17

作者：

Chauvaut, V

Duval, E

Malinowska, B

Cassir, M

Marcus, P

机构：

[1] Ecole Natl Super Chim Paris, Lab Electrchim & Chim Analyt, URA 216 CNRS, F-75231 Paris 05, France

[2] Ecole Natl Super Chim Paris, Lab Physicochim Surfaces, URA 425 CNRS, F-75231 Paris, France

来源：

JOURNAL OF MATERIALS SCIENCE | 1999年 / 34卷 / 09期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1023/A:1004535005201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The surface characterization of titanium, titanium oxide and lithium titanate samples exposed to molten Li2CO3-Na2CO3, in the anodic conditions used in molten carbonate fuel cells, was carried out by X-ray Photoelectron Spectroscopy (XPS). Different elements were identified: Ti(IV), O(-II), Li(I) and Na(I). The amounts of adsorbed sodium and lithium carbonates, as well as inserted lithium were estimated by a semi-quantitative XPS analysis in layers of about 50 Angstrom. A broadening of the Ti 2P(3/2) peak was observed. This effect is probably caused by a distorsion of the Li2TiO3 lattice due to the incorporation of lithium within this structure. Li2TiO3 compound was detected by X-ray diffraction (XRD) on Ti, TiO2 as well as Li2TiO3 after treatment in the molten carbonate eutectic. (C) 1999 Kluwer Academic Publishers.

引用

页码：2015 / 2022

页数：8

共 13 条

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