A novel carbon-coated LiCoO2 as cathode material for lithium ion battery
| Autor: | Q. Xia, Gaojun Wang, H.P. Zhang, H.Q. Wu, Yuping Wu, Q. Cao |
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| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Lithium vanadium phosphate battery
Analytical chemistry chemistry.chemical_element Cathode Lithium-ion battery Dielectric spectroscopy law.invention lcsh:Chemistry chemistry.chemical_compound chemistry Amorphous carbon Chemical engineering lcsh:Industrial electrochemistry lcsh:QD1-999 Ternary compound law Electrochemistry Lithium Lithium oxide lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 9, Iss 5, Pp 1228-1232 (2007) |
| ISSN: | 1388-2481 |
| Popis: | Using a commercially available LiCoO2 as starting material, a surface-modified cathode material was obtained by coating it with a nano layer of amorphous carbon. The carbon-coated LiCoO2 was characterized by X-ray diffraction analysis, scanning electronic microscopy, transmission electronic microscopy, electrochemical impedance spectroscopy and measurement of charge/discharge behavior. Results show that the carbon-coated LiCoO2 displays marked lower charge transfer resistance, higher lithium ion diffusion coefficient and much better rate capability than the original LiCoO2. It also indicates promising application of lithium ion batteries in the areas requiring charge and discharge at high rate. Keywords: Lithium ion battery, LiCoO2, Carbon coating, Rate capability |
| Databáze: | OpenAIRE |
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