| About this Abstract |
| Meeting |
Materials Science & Technology 2011
|
| Symposium
|
MS&T'11 Poster Session
|
| Presentation Title |
093 Fabrication of LiMnxFe1-xPO4 Glass and Glass-Ceramics for Lithium Ion Battery |
| Author(s) |
Tsuyoshi Honma, Takayuki Komatsu |
| On-Site Speaker (Planned) |
Tsuyoshi Honma |
| Abstract Scope |
Lithium iron phosphate LiFePO<sub>4</sub> with an olivine structure has been proposed to be a potential candidate for use cathode materials for the next generation of rechargeable lithium ion batteries. Recently, we proposed new route for the fabrication of LiFePO<sub>4</sub> crystals based on crystallization of precursor glass. The LiFePO<sub>4</sub>/carbon composites were fabricated successfully using a glass powder crystallization processing, in which the mixture of glass powders and glucose was heat-treated at 560-800˚C. In this study, the olivine-type LiMn<sub>x</sub>Fe<sub>1-x</sub>PO<sub>4</sub> crystals are fabricated through the crystallization of Li<sub>2</sub>O-MnO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>-P<sub>2</sub>O<sub>5</sub> glasses, and the electrochemical charge/discharge patterns for the glass-ceramics with LiMn<sub>x</sub>Fe<sub>1-x</sub>PO<sub>4</sub> crystals is examined. Homogeneous glasses are obtained for the stoichiometric compositions corresponding to LiMn<sub>x</sub>Fe<sub>1-x</sub>PO<sub>4</sub> with 0≤x≤0.8 in a conventional melt-quenching method. The heat treatment of the mixtures of glass powders and glucose at crystallization temperatures in a reducing atmosphere of 7%H<sub>2</sub>-93%Ar gives the formation of the olivine-type LiMn<sub>x</sub>Fe<sub>1-x</sub>PO<sub>4</sub> crystals. |
| Proceedings Inclusion? |
Undecided |