TY - JOUR
T1 - The electrochemical behaviour of 2-methyltetrahydrofuran solutions
AU - Malik, Yosef
AU - Aurbach, Doron
AU - Dan, Pnina
AU - Meitav, Arie
PY - 1990/10/14
Y1 - 1990/10/14
N2 - The electrochemical behaviour of 2-methyltetrahydrofuran (2Me-THF) solutions with lithium and noble metal electrodes was investigated. Surface-sensitive FTIR, X-ray microanalysis and scanning electron microscopy were applied in conjunction with electrochemical techniques in order to characterize the electrode surfaces in solutions and to correlate the cycling efficiency and surface morphology of lithium electrodes with their surface chemistry in solutions. The influence of a variety of contaminants, including oxygen, water, CO2, nitrogen, furans and paraffin oil, on the Li cycling efficiency, morphology and surface chemistry was also studied. It was found that the surface films formed on lithium in 2Me-THF contained several types of alkoxides. The presence of trace O2, water, CO2; and furans modifies the structure of these surface films and influences both the morphology and the Li cycling efficiency. The best efficiency of Li electrodes in charge-discharge cycling was obtained with uncontaminated LiAsF6 + 2Me-THF solutions.
AB - The electrochemical behaviour of 2-methyltetrahydrofuran (2Me-THF) solutions with lithium and noble metal electrodes was investigated. Surface-sensitive FTIR, X-ray microanalysis and scanning electron microscopy were applied in conjunction with electrochemical techniques in order to characterize the electrode surfaces in solutions and to correlate the cycling efficiency and surface morphology of lithium electrodes with their surface chemistry in solutions. The influence of a variety of contaminants, including oxygen, water, CO2, nitrogen, furans and paraffin oil, on the Li cycling efficiency, morphology and surface chemistry was also studied. It was found that the surface films formed on lithium in 2Me-THF contained several types of alkoxides. The presence of trace O2, water, CO2; and furans modifies the structure of these surface films and influences both the morphology and the Li cycling efficiency. The best efficiency of Li electrodes in charge-discharge cycling was obtained with uncontaminated LiAsF6 + 2Me-THF solutions.
UR - http://www.scopus.com/inward/record.url?scp=44949283297&partnerID=8YFLogxK
U2 - 10.1016/0022-0728(91)85091-3
DO - 10.1016/0022-0728(91)85091-3
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AN - SCOPUS:44949283297
SN - 0022-0728
VL - 282
SP - 73
EP - 105
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
IS - 1-2
ER -