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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