1. Synthesis and Modification of a Lamellar Co3O4 Anode for Lithium-Ion Batteries
- Author
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LU Sha-Sha, Wang Xue-Jun, Xu Shengming, Huang Guoyong, and LI Lin-Yan
- Subjects
Materials science ,Scanning electron microscope ,Oxide ,Analytical chemistry ,chemistry.chemical_element ,Thermal treatment ,Anode ,Crystallinity ,chemistry.chemical_compound ,chemistry ,Phase (matter) ,Lamellar structure ,Lithium ,Physical and Theoretical Chemistry - Abstract
For advanced performance lithium-ion batteries (LIBs) various novel electrode materials with high energy density have been extensively investigated. Cobaltosic oxide (Co3O4), commonly used as an anode in LIBs, has attracted much interest because of its high theoretical specific capacity (890 mAh∙g - 1 ), high tap density, and stable chemical properties. However, its practical use has been hindered because of its low electronic conductivity and poor rate capability. To address these problems, we investigated a liquid phase precipitation method followed by thermal treatment and obtained a unique lamellar Co3O4 powder. Its X-ray diffraction (XRD) diffraction peaks match the standard pattern for cubic phase Co3O4 with good crystallinity. We found that the Co3O4 powder consists of many irregular sheets (1.5-3.0 µm in diameter, 100-300 nm in thickness) with numerous poles by scanning electron microscopy (SEM).Additionally, the surface area was about 30.5 m 2
- Published
- 2014