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Synthesis, structural, magnetic and electrochemical properties of LiNi1/3Mn1/3Co1/3O2 prepared by a sol–gel method using table sugar as chelating agent

Kızıltaş-Yavuz, Nilüfer and Herklotz, Markus and Hashem, Ahmed M. and Abuzeid, Hanaa M. and Schwarz, Björn and Ehrenberg, Helmut and Mauger, Alain and Julien, Christian M. (2013):
Synthesis, structural, magnetic and electrochemical properties of LiNi1/3Mn1/3Co1/3O2 prepared by a sol–gel method using table sugar as chelating agent.
In: Electrochimica Acta, pp. 313-321, 113, ISSN 00134686, [Online-Edition: http://dx.doi.org/10.1016/j.electacta.2013.09.065],
[Article]

Abstract

Table sugar (sucrose) was used as a new and cheap chelating agent to prepare LiNi1/3Mn1/3Co1/3O2. X-ray diffraction (XRD) shows that the powder adopts the α-NaFeO2 layered structure with space group View the MathML source. The high value of c/a above 4.97 indicates a well-ordered rhombohedral lattice. The refined degree of cationic mixing of 2.4% remains fixed upon cycling. The fatigue of the material used as a positive electrode of a Li-cell has been investigated by scanning and transmission electron microscopy (SEM and TEM) as well as the magnetic measurements in the initial, charged and discharged state at low C/10 rate over the 10th first cycles. Small cracks are observed after cycling, despite the low C-rate and the voltage range limited to 3.0–4.2 V in which only the Ni is electrochemically active. This fatigue, however, has no sizeable impact on the capacity: the initial capacity ≈150 mAh g−1 was retained at the 10th cycle (ca. 97%).

Item Type: Article
Erschienen: 2013
Creators: Kızıltaş-Yavuz, Nilüfer and Herklotz, Markus and Hashem, Ahmed M. and Abuzeid, Hanaa M. and Schwarz, Björn and Ehrenberg, Helmut and Mauger, Alain and Julien, Christian M.
Title: Synthesis, structural, magnetic and electrochemical properties of LiNi1/3Mn1/3Co1/3O2 prepared by a sol–gel method using table sugar as chelating agent
Language: English
Abstract:

Table sugar (sucrose) was used as a new and cheap chelating agent to prepare LiNi1/3Mn1/3Co1/3O2. X-ray diffraction (XRD) shows that the powder adopts the α-NaFeO2 layered structure with space group View the MathML source. The high value of c/a above 4.97 indicates a well-ordered rhombohedral lattice. The refined degree of cationic mixing of 2.4% remains fixed upon cycling. The fatigue of the material used as a positive electrode of a Li-cell has been investigated by scanning and transmission electron microscopy (SEM and TEM) as well as the magnetic measurements in the initial, charged and discharged state at low C/10 rate over the 10th first cycles. Small cracks are observed after cycling, despite the low C-rate and the voltage range limited to 3.0–4.2 V in which only the Ni is electrochemically active. This fatigue, however, has no sizeable impact on the capacity: the initial capacity ≈150 mAh g−1 was retained at the 10th cycle (ca. 97%).

Journal or Publication Title: Electrochimica Acta
Volume: 113
Uncontrolled Keywords: Lithium batteries; Positive electrode; Table sugar; Sol–gel; Magnetic properties
Divisions: DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B4: In situ investigations of the degradation of intercalation batteries and their modelling
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 30 Oct 2013 10:51
Official URL: http://dx.doi.org/10.1016/j.electacta.2013.09.065
Additional Information:

SFB 595 B4

Identification Number: doi:10.1016/j.electacta.2013.09.065
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