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XPS analysis of lithium intercalation in thin films of molybdenum oxysulphides
Author(s) -
Benoist L.,
Gonbeau D.,
PfisterGuillouzo G.,
Schmidt E.,
Meunier G.,
Levasseur A.
Publication year - 1994
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740220146
Subject(s) - molybdenum , x ray photoelectron spectroscopy , intercalation (chemistry) , thin film , lithium (medication) , ion , redox , materials science , inorganic chemistry , chemistry , chemical engineering , nanotechnology , organic chemistry , medicine , endocrinology , engineering
Thin films of molybdenum oxysulphides which could be used as positive electrode materials in microbatteries were analysed by XPS. The results have shown the existence of a new environment for molybdenum with S 2 2− pairs, S 2− and O 2− ions. The evolution of these thin films MoOySz at different stages of their cycle in experimental generators has also been studied; the main elements involved in the redox processes have been characterized: molybdenum atoms with +6 formal oxidation number and disulphide pairs S 2 2− .