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Single-crystal LiNi0.5Co0.2Mn0.3O2: a high thermal and cycling stable cathodes for lithium-ion batteries.
- Source :
-
Journal of Materials Science . Mar2020, Vol. 55 Issue 7, p2913-2922. 10p. 1 Color Photograph, 1 Black and White Photograph, 1 Diagram, 3 Charts, 5 Graphs. - Publication Year :
- 2020
-
Abstract
- Single-crystalline LiNi0.5Co0.2Mn0.3O2 (denoted as SC-523) with micron size had been successfully synthesized through a facile method. Electrochemical impedance spectroscopy and differential scanning calorimetry were carried out to identify the improved electrochemical performance and desired thermal stability. Even after 100 cycles, SC-523 still delivered a discharge capacity of 151.1 mA h g−1 (capacity retention with 90.3%) at 1 C in voltage range from 3.0 to 4.5 V (vs. Li/Li+), while polycrystalline spherical LiNi0.5Co0.2Mn0.3O2 (denoted as PC-523) only exhibited 141.7 mA h g−1 (capacity retention with 78.4%). Besides, SC-523 shows a higher decomposition temperature of 332.13 °C, 14.61 °C higher than that of PC-523 during the thermal decomposition. Consequently, single-crystalline particles with robust morphological integrity ensure the enhanced cycling stability and thermal stability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 55
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 140205846
- Full Text :
- https://doi.org/10.1007/s10853-019-04133-z