Beryllium-barium activated lithium iron phosphate cathode material
A technology of lithium iron phosphate and cathode material, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of low tap density and poor electrical conductivity, and achieve the effect of improving electronic conductivity, reducing impedance and improving diffusion coefficient
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Embodiment 1
[0024]Li2CO3 (99.73%), BeO (99.8%), BaCO3 (99.8%), FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw materials, according to the ratio of 1mol Li: 0.00002mol Be: 0.0003mol Ba: 1mol Fe: 1molP After mixing, high-speed ball milling in absolute ethanol (AR) medium for 20h (rotation speed 200r / mimn. After drying at 105-120°C, the precursor was obtained, and the dried precursor was placed in a high-temperature furnace. In a nitrogen (>99.5%) atmosphere, calcining at a high temperature of 500-750° C. for 24 hours to obtain the beryllium and barium activated lithium iron phosphate cathode material of the present invention.
Embodiment 2
[0026] Li2CO3 (99.73%), BeO (99.8%), BaCO3 (99.8%), FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material, according to 1mol Li: 0.00004mol Be: 0.001mol Ba: 1mol Fe: 1molP ratio After mixing, high-speed ball milling in absolute ethanol (AR) medium for 20h (rotation speed 200r / mimn. After drying at 105-120°C, the precursor was obtained, and the dried precursor was placed in a high-temperature furnace. In a nitrogen (>99.5%) atmosphere, calcining at a high temperature of 500-750° C. for 24 hours to obtain the beryllium and barium activated lithium iron phosphate cathode material of the present invention.
Embodiment 3
[0028] Li2CO3 (99.73%), BeO (99.8%), BaCO3 (99.8%), FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material, according to 1mol Li: 0.00005mol Be: 0.003mol Ba: 1mol Fe: 1molP ratio After mixing, high-speed ball milling in absolute ethanol (AR) medium for 20h (rotation speed 200r / mimn. After drying at 105-120°C, the precursor was obtained, and the dried precursor was placed in a high-temperature furnace. In a nitrogen (>99.5%) atmosphere, calcining at a high temperature of 500-750° C. for 24 hours to obtain the beryllium and barium activated lithium iron phosphate cathode material of the present invention.
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