Electrochemical Properties of Mesoporous γ-Fe2O3 was Synthesized by Sol-gel Citrate Method
| Authors | V.O. Kotsyubynsky1, A.B. Hrubiak1, V.V. Moklyak2, L.V. Mokhnatska1 |
| Affiliations |
1 Vasyl Stefanyk Precarpathian National University, 57, Shevchenko St., 76018 Ivano-Frankivsk, Ukraine 2 G.V. Kurdyumov Institute for Metal Physics National Academy of Science, 36, Academician Vernadsky Blvd., 03680 Kiev, Ukraine |
| Е-mail | kotsuybynsky@gmail.com |
| Issue | Volume 8, Year 2016, Number 1 |
| Dates | Received 17 November 2015; published online 15 March 2016 |
| Citation | V.O. Kotsyubynsky, A.B. Hrubiak, V.V. Moklyak, L.V. Mokhnatska, J. Nano- Electron. Phys. 8 No 1, 01004 (2016) |
| DOI | 10.21272/jnep.8(1).01004 |
| PACS Number(s) | 82.45.Yz, 82.47.Aa |
| Keywords | Mesoporous γ-Fe2O3, Lithium power source, Specific surface area, Diffusion (11) . |
| Annotation |
Mesoporous γ-Fe2O3, was synthesized by sol-gel citrate method and investigated as cathode material for the lithium power sources. Values of the specific energy reached 200 Wh/kg at a rate of discharge 1.0C, which corresponds to real conditions working of lithium power sources. Two kinetic processes take place at the discharge of lithium power sources. The first stage corresponds to the accumulation of Li+ ions on the surface of the interface between the cathode material/electrolyte during discharge of lithium power sources. Accumulation of charge on the interface between the cathode material/electrolyte is accompanied by percolation diffusion of Li+ ions on the surface. The second stage corresponds to diffusion of Li+ ions in the crystal structure of the cathode material. The diffusion coefficients of lithium in the cathode material on the different stages of discharge process are calculated. |
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