Lithium iron phosphate anode material with activating aluminum and barium
A lithium iron phosphate, cathode material technology, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of low tap density and poor conductivity, and achieve the effects of improving electronic conductivity, reducing impedance and reducing unit cell volume.
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Embodiment 1
[0025]Li2CO3 (99.73%), Al (OH) 3 (99.5%), BaCO3 (99.8%), FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material, according to 1mol Li: 0.002mol Al: 0.0003mol Ba: 1mol After mixing Fe: 1mol P ratio, in absolute ethanol (AR) medium, high-speed ball milling (rotation speed 200r / mimn) for 20h. After drying at 105-120°C, the precursor was obtained, and the dried precursor was placed in a high-temperature furnace In an atmosphere of ordinary pure nitrogen (>99.5%), calcining at a high temperature of 500-750° C. for 24 hours to obtain the aluminum and barium activated lithium iron phosphate cathode material of the present invention.
Embodiment 2
[0027] Li2CO3 (99.73%), Al (OH) 3 (99.5%), BaCO3 (99.8%) FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material, according to 1mol Li: 0.004mol Al: 0.001mol Ba: 1mol Fe : After mixing in the ratio of 1mol P, in absolute ethanol (AR) medium, high-speed ball milling (rotating speed 200r / mimn) 20h (speed 200r / mimn. After drying at 105-120°C, the precursor is obtained, and the precursor obtained by drying is placed in a high-temperature furnace , in an ordinary pure nitrogen (>99.5%) atmosphere, calcined at a high temperature of 500-750° C. for 24 hours to obtain the aluminum and barium activated lithium iron phosphate cathode material of the present invention.
Embodiment 3
[0029] Li2CO3 (99.73%), Al (OH) 3 (99.5%), BaCO3 (99.8%), FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material, according to 1mol Li: 0.005mol Al: 0.003mol Ba: 1mol After mixing Fe: 1mol P ratio, in absolute ethanol (AR) medium, high-speed ball milling (rotation speed 200r / mimn) for 20h. After drying at 105-120°C, the precursor was obtained, and the dried precursor was placed in a high-temperature furnace In an atmosphere of ordinary pure nitrogen (>99.5%), calcining at a high temperature of 500-750° C. for 24 hours to obtain the aluminum and barium activated lithium iron phosphate cathode material of the present invention.
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