The Influence of Nonstoichiometry on the Electronic Structure of Li 1+xCoO2 (0 < x ≤ 0.1) Superstoichiometric Oxides Full article
Journal |
Russian Journal of Physical Chemistry A
ISSN: 0036-0244 , E-ISSN: 1531-863X |
||||||
---|---|---|---|---|---|---|---|
Output data | Year: 2003, Volume: 77, Number: 8, Pages: 1319-1323 Pages count : 5 | ||||||
Tags | cobalt derivative; lithium derivative; nonstoichiometric compound; oxide; oxygen derivative | ||||||
Authors |
|
||||||
Affiliations |
|
Abstract:
Li1+xCoO2 (0 less than or equal to x less than or equal to 0.1) samples prepared by the traditional ceramic technique were studied by X-ray diffraction, IR spectroscopy, X-ray photoelectron spectroscopy, diffuse reflectance electron spectroscopy, and magnetic measurements. The superstoichiometric oxides had a uniform crystal structure with statistically distributed vacancies in cobalt layers and an enhanced covalence of Co-O bonds. Excess lithium caused the appearance of a new oxygen state (O-) different from the oxide state (O2-) rather than the reduction of Co3+ ions to Co2+. The appearance of oxygen ions with an unusually low electron density was directly related to the formation of oxygen positions with a decreased coordination number; the magnetic properties of Li1+xCoO2 were governed by exchange-coupled (Co3+-O-) pairs.
Cite:
Kaichev V.V.
, Kosova N.V.
, Devyatkina E.T.
, Bukhtiyarov V.I.
, Kellerman D.G.
The Influence of Nonstoichiometry on the Electronic Structure of Li 1+xCoO2 (0 < x ≤ 0.1) Superstoichiometric Oxides
Russian Journal of Physical Chemistry A. 2003. V.77. N8. P.1319-1323. WOS Scopus РИНЦ
The Influence of Nonstoichiometry on the Electronic Structure of Li 1+xCoO2 (0 < x ≤ 0.1) Superstoichiometric Oxides
Russian Journal of Physical Chemistry A. 2003. V.77. N8. P.1319-1323. WOS Scopus РИНЦ
ArticleLinkType.TRANSLATED_TO_ORIGINAL:
Каичев В.В.
, Косова Н.В.
, Девяткина Е.Т.
, Бухтияров В.И.
, Келлерман Д.Г.
Влияние нестехиометрии на электронное строение сверхстехиометрических оксидов Li 1+xCoO 2 (0 < х < 0.1)
Журнал физической химии. 2003. Т.77. №8. С.1472-1477. РИНЦ
Влияние нестехиометрии на электронное строение сверхстехиометрических оксидов Li 1+xCoO 2 (0 < х < 0.1)
Журнал физической химии. 2003. Т.77. №8. С.1472-1477. РИНЦ
Dates:
Submitted: | Oct 15, 2002 |
Published print: | Aug 1, 2003 |
Identifiers:
Web of science | WOS:000184702700019 |
Scopus | 2-s2.0-0141852071 |
Elibrary | 13435553 |
publication.block.citing_info:
Пока нет цитирований