Microemulsion preparation and electrochemical characteristics of LiNi1/3Co1/3Mn1/3O2 powders
By Lu, Chung-Hsin & Lin, Yu-Kai
Published in Journal of Power Sources
NULL
2009
Abstract
Layer-structured LiNi1/3Co1/3Mn1/3O2 was successfully synthesized via a reverse microemulsion (RμE) route. Well-crystallized nanosized (around 45 nm) powders were obtained with calcination at 800 °C. The Rietveld refinement data revealed low degree of cationic displacement in the obtained powders. Within the voltage range of 2.5–4.5 V, the microemulsion-derived LiNi1/3Co1/3Mn1/3O2 delivered 187.2 and 195.5 mAh g-1 at room temperature and 55 °C, respectively. The prepared powders were found to exhibit low irreversible capacity and good capacity retention. Microemulsion-derived LiNi1/3Co1/3Mn1/3O2 demonstrated better rate capability than the solid-state derived samples, owing to the reduced particle size and increased surface area. Once the upper cut-off voltage reached 4.6 V, the capacity faded more rapidly than in other operation potential ranges. In this study, the microemulsion process effectively improved the electrochemical characteristics of LiNi1/3Co1/3Mn1/3O2. This soft chemical route possesses a great potential for synthesizing other types of cathode materials with multiple cations.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.