NDLI: Preparation and electrochemical characteristics of microemulsion-derived Li(Ni, Co)O$

Content Provider	Springer Nature Link
Author	Lu, Chung Hsin Wang, Hsien Cheng
Copyright Year	2007
Abstract	Nanosized LiNi$_{0.9}$Co$_{0.1}$O$_{2}$ powders used in lithium-ion batteries are successfully prepared via a water-in-oil microemulsion process. The average particle sizes of the microemulsion-derived LiNi$_{0.9}$Co$_{0.1}$O$_{2}$ powders are in nanometer scale. The obtained powders are much smaller in size than the specimens prepared via the conventional solid state and sol–gel processes. Oxygen has significant enhancement effects on the cationic ordering of the calcined powders. Highly cation-ordered LiNi$_{0.9}$Co$_{0.1}$O$_{2}$ powders with a layered $$ R\bar 3m $$ structure are obtained after heat-treatment at 800 °C in O$_{2}$. In addition, the high intensity ratio of I $_{003}$/I $_{104}$ reveals that lithium ions and transition metal ions are regularly situated at the 3a and 3b sites, respectively, rendering the high cationic ordering. The discharge capacity of the first cycle for the specimen calcined at 800 °C in O$_{2}$ is 170.9 mAh/g. After 20 cycles, the capacity retention of LiNi$_{0.9}$Co$_{0.1}$O$_{2}$ powders is 93.2%, indicating that LiNi$_{0.9}$Co$_{0.1}$O$_{2}$ powders with good cycling characteristics are obtained via the microemulsion process.
Starting Page	752
Ending Page	758
Page Count	7
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	42
Issue Number	3
e-ISSN	15734803
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2007-01-12
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mechanics Crystallography Continuum Mechanics and Mechanics of Materials Polymer Sciences Characterization and Evaluation Materials Materials Science
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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