| Research Title |
Effect of Firing Temperature on the Electrochemical Performance of Nanocapsule-like LiMn0.5Fe0.5PO4/C Cathode Materials for Li-Ion Batteries |
| Date of Distribution |
15 March 2019 |
| Conference |
| Title of the Conference |
การประชุมวิชาการเสนอผลงานวิจัยระดับบัณฑิตศึกษาแห่งชาติ ครั้งที่ 20 ปี การศึกษา 2562 |
| Organiser |
บัณฑิตวิทยาลัย |
| Conference Place |
มหาวิทยาลัยขอนแก่น |
| Province/State |
ขอนแก่น |
| Conference Date |
15 March 2019 |
| To |
15 March 2019 |
| Proceeding Paper |
| Volume |
2019 |
| Issue |
20 |
| Page |
177-186 |
| Editors/edition/publisher |
NGRC |
| Abstract |
Olivine LiMnxFe1-xPO4 cathode materials received high structural and chemical stabilities and high voltage. However, their major disadvantage is low electrical conductivity. In this article, effects of firing temperature that influences the structural, morphological, and electrochemical properties of LiMnxFe1-xPO4 and carbon composites have been investigated. X-ray diffraction technique was used to show that the LiMnxFe1-xPO4 materials were successfully synthesized by a solvothermal method. Scanning electron microscopy was used to show that the materials were in the nanometer size scale and had capsule-like morphology consisting of the LiMnxFe1-xPO4/C nanocrystals distributed in the continuous carbon matrix leading to high electrical conductivity. Raman spectroscopy was used to study the crystallinity of the carbon phase and showed that the material fired at 600 oC provided the highest degree of graphitization. The graphite formation in a combination of the capsule-like nanostructures lead to high charge / discharge capacities of these materials. The highest discharge capacity is found to be 154 mAh.g-1 at a C/10 rate and was resulted from the sample fired at 600 oC for 6h. |
| Author |
|
| Peer Review Status |
มีผู้ประเมินอิสระ |
| Level of Conference |
ชาติ |
| Type of Proceeding |
Full paper |
| Type of Presentation |
Oral |
| Part of thesis |
true |
| Presentation awarding |
false |
| Attach file |
|
| Citation |
0
|
|
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Publication
Journal Publication
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