Synthesis and Characterization of LiNi0.7–xMgxCo0.3O2 (0≤x≤0.1) Cathode Materials for Lithium-Ion Batteries Prepared by a Sol-Gel Method
Author
Source
Advances in Materials Science and Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-02-17
Country of Publication
Egypt
No. of Pages
7
Abstract EN
Prospective cathode materials LiNi0.7–xMgxCo0.3O2 (0≤x≤0.1) for a lithium-ion secondary battery were synthesized using a sol-gel method.
The structural and electrochemical properties were examined by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), cyclic voltammetry(CV), and charge-discharge tests.
The results show that the LiNi0.7–xMgxCo0.3O2 maintains the α-NaFeO2 type layered structure regardless of the magnesium content in the range x⩽0.1.
On the other hand, Mg-doping improves the capacity retention well.
Besides, the Mg-doping promotes the diffusion of Li+ in LiNi0.7Co0.3O2.
Moreover, Mg-doping suppresses the phase transitions that usually occur in LiNiO2 during cycling and improves the charge-discharge reversibility of Li/LiNi0.7Co0.3O2.
High temperature cycling performance of the cathode at 55.5°C is also improved by Mg-doping, which is possibly attributed to the total stronger metal-oxygen bonding and the enhanced structure stability of those delithiated Mg-doped cathodes during cycling.
American Psychological Association (APA)
Zhang, Hai-Lang. 2014. Synthesis and Characterization of LiNi0.7–xMgxCo0.3O2 (0≤x≤0.1) Cathode Materials for Lithium-Ion Batteries Prepared by a Sol-Gel Method. Advances in Materials Science and Engineering،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1015849
Modern Language Association (MLA)
Zhang, Hai-Lang. Synthesis and Characterization of LiNi0.7–xMgxCo0.3O2 (0≤x≤0.1) Cathode Materials for Lithium-Ion Batteries Prepared by a Sol-Gel Method. Advances in Materials Science and Engineering No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1015849
American Medical Association (AMA)
Zhang, Hai-Lang. Synthesis and Characterization of LiNi0.7–xMgxCo0.3O2 (0≤x≤0.1) Cathode Materials for Lithium-Ion Batteries Prepared by a Sol-Gel Method. Advances in Materials Science and Engineering. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1015849
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1015849