Effect of Electronic State of Ions on the Electrochemical Properties of Layered Cathode Materials LiNi1–2xCoxMnxO2 Full article
Journal |
Russian Journal of Electrochemistry
ISSN: 1023-1935 , E-ISSN: 1608-3342 |
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Output data | Year: 2008, Volume: 44, Number: 5, Pages: 543-549 Pages count : 7 DOI: 10.1134/S1023193508050066 | ||||||
Tags | Cycling, Layered cathode materials, Lithium-ion battery, Magnetic susceptibility, Mechanical activation, XPS | ||||||
Authors |
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Affiliations |
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Funding (1)
1 | Russian Foundation for Basic Research | 05-03-32703 |
Abstract:
The cathode materials of the composition LiNi1 – 2xCoxMnxO2 (x = 0.1, 0.2. 0.33) synthesized from
the Ni, Co, Mn mixed hydroxides and LiOH by using mechanical activation method are studied. It is shown that
all synthesized compounds have layered structure described by the space group R-3m. With the decreasing of
the nickel content the cell volume and the degree of structure disordering decrease. According to XPS data, the
electronic main state of d-ions at the prepared samples' surfaces corresponds to Ni2+, Co3+, and Mn4+. An
increase in the nickel content leads to the increase of the Ni2p3/2 and Co2p3/2 binding energy, which points to
the change in the Me–O bond covalence. According to magnetic susceptibility measurements data, the nickel
ions in LiNi0.6Co0.2Mn0.2O2 exist in the two oxidation states: Ni2+ and Ni3+. It is shown that this sample has the
highest specific discharge capacity (~170 mAh/g). The positions of redox peaks in the differential capacitance
curves depend on the sample composition: with the increasing of nickel content they are shifted toward lower
voltages
Cite:
Kosova N.V.
, Devyatkina E.T.
, Kaichev V.V.
, Kellerman D.G.
Effect of Electronic State of Ions on the Electrochemical Properties of Layered Cathode Materials LiNi1–2xCoxMnxO2
Russian Journal of Electrochemistry. 2008. V.44. N5. P.543-549. DOI: 10.1134/S1023193508050066 WOS Scopus РИНЦ
Effect of Electronic State of Ions on the Electrochemical Properties of Layered Cathode Materials LiNi1–2xCoxMnxO2
Russian Journal of Electrochemistry. 2008. V.44. N5. P.543-549. DOI: 10.1134/S1023193508050066 WOS Scopus РИНЦ
Original:
Косова Н.В.
, Девяткина Е.Т.
, Каичев В.В.
, Келлерман Д.Г.
Влияние электронного состояния ионов на электрохимические свойства слоистых катодных материалов LiNi1 - 2xCoxMnxO2
Электрохимия. 2008. Т.44. №5. С.587-593. РИНЦ
Влияние электронного состояния ионов на электрохимические свойства слоистых катодных материалов LiNi1 - 2xCoxMnxO2
Электрохимия. 2008. Т.44. №5. С.587-593. РИНЦ
Dates:
Submitted: | Dec 26, 2006 |
Published print: | May 1, 2008 |
Published online: | Jun 1, 2008 |
Identifiers:
Web of science | WOS:000256806000006 |
Scopus | 2-s2.0-44449101617 |
Elibrary | 13589220 |
Chemical Abstracts | 2008:678093 |
Chemical Abstracts (print) | 151:82101 |
OpenAlex | W1991977201 |