Supercritical Fluid Synthesis of LiCoPO4 Nanoparticles and Their Application to Lithium Ion Battery
Abstract
:1. Introduction
2. Results and Discussion
2.1. One Pot Synthesis
2.2. X-ray Powder Diffraction Analysis
Formula Crystal system Space group | LiCoPO4 (Using Co(NO3)2 6H2O) Orthorhombic Pnma | LiCoPO4 (Using C4H6CoO4 4H2O) Orthorhombic Pnma | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Atom | Site | X | Y | Z | g | B/Å2 | X | Y | Z | g | B/Å2 |
Li | 4a | 0.5 | 0.5 | 0.5 | 1 | 0.8 | 0.5 | 0.5 | 0.5 | 1 | 0.8 |
Co | 4c | 0.2778 | 0.25 | 0.9819 | 1 | 1.0 | 0.2783 | 0.25 | 0.9801 | 1 | 1.0 |
P | 4c | 0.096 | 0.25 | 0.420 | 1 | 1.5 | 0.096 | 0.25 | 0.416 | 1 | 1.5 |
O(1) | 4c | 0.091 | 0.25 | 0.736 | 1 | 1.7 | 0.085 | 0.25 | 0.728 | 1 | 1.7 |
O(2) | 4c | 0.453 | 0.25 | 0.240 | 1 | 0.6 | 0.445 | 0.25 | 0.230 | 1 | 0.6 |
O(3) | 8d | 0.160 | 0.029 | 0.278 | 1 | 0.9 | 0.157 | 0.0276 | 0.275 | 1 | 0.9 |
2.3. TEM and HRTEM Analysis
Synthesis Temperature (°C) | Reaction Time (min) | Morphology | Particle size (nm) | XRD |
---|---|---|---|---|
300 | 7,10 &15 | Sphere | 10-30 | nearly amorphous |
350 | 7,10 &15 | Sphere & rods | 10-30 | LiCoPO4, Li3PO4 |
400 | 7,10 &15 | Sphere, plates & rods | 10-30 | LiCoPO4 |
2.4. Elemental Mapping
2.5. BET and TG-Analysis
2.6. Electrochemical Performance
3. Experimental Section
3.1. Synthesis of LiCoPO4 Nanoparticles
3.2. Material Characterization
3.3. Electrochemical Performance
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Devaraju, M.K.; Truong, Q.D.; Hyodo, H.; Tomai, T.; Honma, I. Supercritical Fluid Synthesis of LiCoPO4 Nanoparticles and Their Application to Lithium Ion Battery. Inorganics 2014, 2, 233-247. https://doi.org/10.3390/inorganics2020233
Devaraju MK, Truong QD, Hyodo H, Tomai T, Honma I. Supercritical Fluid Synthesis of LiCoPO4 Nanoparticles and Their Application to Lithium Ion Battery. Inorganics. 2014; 2(2):233-247. https://doi.org/10.3390/inorganics2020233
Chicago/Turabian StyleDevaraju, Murukanahally Kempaiah, Quang Duc Truong, Hiroshi Hyodo, Takaaki Tomai, and Itaru Honma. 2014. "Supercritical Fluid Synthesis of LiCoPO4 Nanoparticles and Their Application to Lithium Ion Battery" Inorganics 2, no. 2: 233-247. https://doi.org/10.3390/inorganics2020233