Conduction and Electrochemistry Mechanism of Al3+ and Ni2+ doped LiMn2O4 with or without Ball Milling
| Autor: | Han-Yang Chung, 鍾瀚揚 |
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| Rok vydání: | 2005 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 93 Decreasing of the temperature causes the phenomenon which the resisitity arise suddenly near temperature 280K. That is the manganese spinel undergoes a phase transition between high -temperature cubic and low temperature orthorhombic phase. Substitution of manganese cause disappearance of the phase transition characteristic of a stoichiometric spinel and affects the conduction mechanism of the material. The powder with ball milling has different electrochemical properties from it with annealing. The material LiMn2O4 doped with Ni2+ or Al3+ ion also shows the different electrochemical properties. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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