LiMn<sub>2</sub>O<sub>4–<it>y</it> </sub>Br<sub> <it>y</it> </sub>Nanoparticles Synthesized by a Room Temperature Solid-State Coordination Method
<p>Abstract</p> <p>LiMn<sub>2</sub>O<sub>4–<it>y</it> </sub>Br<sub> <it>y</it> </sub>nanoparticles were synthesized successfully for the first time by a room temperature solid-state coordination method. X-ray dif...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2009-01-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1007/s11671-009-9252-7 |
| Summary: | <p>Abstract</p> <p>LiMn<sub>2</sub>O<sub>4–<it>y</it> </sub>Br<sub> <it>y</it> </sub>nanoparticles were synthesized successfully for the first time by a room temperature solid-state coordination method. X-ray diffractometry patterns indicated that the LiMn<sub>2</sub>O<sub>4–<it>y</it> </sub>Br<sub> <it>y</it> </sub>powders were well-crystallized pure spinel phase. Transmission electron microscopy images showed that the LiMn<sub>2</sub>O<sub>4–<it>y</it> </sub>Br<sub> <it>y</it> </sub>powders consisted of small and uniform nanosized particles. Synthesis conditions such as the calcination temperature and the content of Br<sup>−</sup>were investigated to optimize the ideal condition for preparing LiMn<sub>2</sub>O<sub>4–<it>y</it> </sub>Br<sub> <it>y</it> </sub>with the best electrochemical performances. The optimized synthesis condition was found in this work; the calcination temperature is 800 °C and the content of Br<sup>−</sup>is 0.05. The initial discharge capacity of LiMn<sub>2</sub>O<sub>3.95</sub>Br<sub>0.05</sub>obtained from the optimized synthesis condition was 134 mAh/g, which is far higher than that of pure LiMn<sub>2</sub>O<sub>4</sub>, indicating introduction of Br<sup>−</sup>in LiMn<sub>2</sub>O<sub>4</sub>is quite effective in improving the initial discharge capacity.</p> |
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| ISSN: | 1931-7573 1556-276X |