Analysis of the surface layer on a petroleum coke electrode in tetraglyme solutions of lithium salts

Authors
Laik, B Chausse, A Messina, R Barthes-Labrousse, MG Nedelec, JY Le Paven-Thivet, C Grillon, F
Citation
B. Laik et al., Analysis of the surface layer on a petroleum coke electrode in tetraglyme solutions of lithium salts, ELECTR ACT, 46(5), 2000, pp. 691-700
Citations number
43
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHIMICA ACTA
ISSN journal
00134686 → ACNP
Volume
46
Issue
5
Year of publication
2000
Pages
691 - 700
Database
ISI
SICI code
0013-4686(200012)46:5<691:AOTSLO>2.0.ZU;2-N
Abstract
The surface layer on a petroleum coke in tetraglyme solutions of LiAsF6 or LiCF3SO3 was analysed with X-ray Photoelectron Spectroscopy, Scanning Elect ron Microscopy, Gas Chromatography and fluoride selective electrode. Result s indicate that solvent reduction is a minor process and salt reduction a m ajor one. Results are consistent with the reduction mechanism of LiAsF6 pro posed in the literature. But with LiCF3SO3, we suggest that reduction proce eds via the cleavage of a C-F bond instead of a C-S bond. (C) 2000 Elsevier Science Ltd. All rights reserved.