| Autor: |
Drozhzhin, O. A., Zharikova, E. V., Lakienko, G. P., Rozova, M. G., Antipov, E. V. |
| Zdroj: |
Nanobiotechnology Reports; December 2023, Vol. 18 Issue: Supplement 2 pS286-S292, 7p |
| Abstrakt: |
Lithium and transition-metal phosphates are promising cathode materials for lithium-ion batteries. Lithium manganese phosphate LiMnPO4has a higher specific energy density than LiFePO4used in practice: theoretical values of 700 and 580 W h/kg, respectively. However, its use is hampered by a number of disadvantages: reduced electronic and ionic conductivity, inferior stability of the structure in the charged form, and large changes in the volume during (de)lithiation. LiMnPO4and LiMn0.95Ni0.05PO4samples are synthesized by the solvothermal method and studied using X-ray powder diffraction, low-temperature nitrogen adsorption, scanning electron microscopy, and electrochemical methods. It is shown that a small degree of substitution of Mn for Ni (5 at %) leads to an increase in the capacity and Coulombic efficiency of LiMnPO4, a decrease in charge-transfer resistance, and an increase in Li+diffusion coefficients. |
| Databáze: |
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