Abstract
Fine-sized LiMn2O4 powders were prepared by solid-state reaction method using the nano-sized manganese oxide powders. Nano-sized manganese oxide powders obtained by spray pyrolysis from spray solution with citric acid and ethylene glycol formed the fine-sized LiMn 2O4 powders with regular morphology by solid-state reaction method with LiOH. The mean sizes of the LiMn2O4 powders prepared from the nano-sized manganese oxide increased with increasing the post-treatment temperatures. Nano-sized LiMn2O4 powders with regular morphology were obtained at low post-treatment temperatures below 800°C. The LiMn2O4 powders post-treated at 800°C had the mean size of several hundreds nanometer and the narrow size distribution. The initial discharge capacity of the fine-sized LiMn 2O4 powders prepared by solid-state reaction method using nano-sized Mn2O3 powders was 127 mAh/g. The discharge capacities of the LiMn2O4 powders dropped from 127 to 112 mAh/g by the 50th cycle at a current density of 0.1 C.
Original language | English |
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Pages (from-to) | 241-244 |
Number of pages | 4 |
Journal | Journal of the Ceramic Society of Japan |
Volume | 115 |
Issue number | 1340 |
DOIs | |
Publication status | Published - 2007 Apr |
Externally published | Yes |
Keywords
- Lithium manganate
- Manganese oxide
- Nano powder
- Spray pyrolysis
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry