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• W3042783207 abstract "The synthesis of finely divided iron (III) and (II) molybdates from aqueous solutions was carried out. Electroactive materials based on synthesized compounds and thermally expanded graphite have been prepared. Lithium current sources with cathodes were constructed based on these materials and their charge-discharge characteristics were determined. The open circuit voltage of element 1 is close to 3 V. During discharge, the voltage sharply decreases to 2 V for the first discharge-charge cycle (2.35 V for the second discharge-charge cycle) and decreases from 2 to 1 V. during discharge. further discharge results in a faster decrease of the discharge current and voltage. The results obtained indicate that the discharge characteristics of the element after manufacture are relatively good. The following discharge-charge cycles show a deterioration of the discharge characteristics by reducing the energy and current efficiency. Judging by the amount of energy received in 0 discharge cycles and the energy expended on the charge of the element, it can be stated that part of the lithium ions is intercalated into the cathode material irreversibly. After completion of the 0 discharge cycle, the composition of the generated recovery product based on the amount of electricity obtained can be represented by the formula Li 2,48 Fe 2 (MoO 4 ) 3 . In the 1st and 2nd cycles, the number of lithium ions intercalated into the cathode material is x = 1.68 and x = 0.88, respectively. On the discharge curve of element 2, you can select the area where the voltage varies relatively slowly from 3.5 V to 2.5 V, which corresponds to the number of intercalated lithium ions x = 0,15, as well as the second area for which a fairly stable value of voltage 1 is observed. 5V and a slight downward drift. A fairly stable element discharge occurs up to a lithium content of x ≤ 0.56. After completion of the 0 discharge cycle, the composition of the generated recovery product based on the amount of electricity obtained can be represented by the formula Li 0,71 FeMoO 4 . After the recharge, the corresponding plateaus became much narrower and the voltage value decreased significantly. The results obtained indicate that the discharge characteristics of the element after manufacture are relatively good, and for subsequent cycles of discharge-charge about the poor turnover of the processes, which is indicated by the small values of the coefficients of return. In the 1st and 2nd cycles, the number of lithium ions intercalated into the cathode material is x = 0.32 and x = 0.11, respectively. These data indicate that a large number of lithium ions are irreversibly incorporated into the structure of molybdate iron (II) and as the discharge-charge cycles increase, this amount increases. Keywords: iron molibdate, lithium power sources, charge-discharge properties." @default.
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• W3042783207 date "2020-01-01" @default.
• W3042783207 modified "2023-09-25" @default.
• W3042783207 title "Research of iron (III) molybdate and iron (II) molybdate as catode materials for lithium power sources" @default.
• W3042783207 doi "https://doi.org/10.30970/vch.6102.470" @default.
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