A new gel route to synthesize LiCoO{sub 2} for lithium-ion batteries
- Department of Materials Science and Engineering, University of Science and Technology of China, Anhui Hefei 230026 (China)
A new synthetic route, i.e. the radiated polymer gel (RPG) method, has been developed and demonstrated for the production of LiCoO{sub 2} powders. The process involved two processes: (1) obtaining a gel by polymerizing a mixed solution of an acrylic monomer and an aqueous solution of lithium and cobalt salts under {gamma}-ray irradiation conditions and (2) obtaining LiCoO{sub 2} powders by drying and calcining the gel. Thermogravimetric analysis (TGA), X-ray diffraction (XRD) and electron scanning microscopy (SEM) were employed to study the reaction process and the structures of the powders. Galvanostatic cell cycling, cyclic voltammetry and ac impedance spectroscopy were used to evaluate the electrochemical properties of the LiCoO{sub 2} powders. It was found that a pure phase of LiCoO{sub 2} can be obtained at the calcination temperature of 800 deg. C. Both the particle size (micrometer range) and specific charge/discharge capacity of an RPG-LiCoO{sub 2} powder increase with increasing the concentration of its precursor solution.
- OSTI ID:
- 20891582
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 9 Vol. 40; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sol-gel synthesis of lithium aluminate
The effect of solution chemistry on the preparation of MgAl{sub 2}O{sub 4} by hydrothermal-assisted sol-gel processing