Copper and barium activated lithium iron phosphate cathode material
A lithium iron phosphate, cathode material technology, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of poor conductivity and low tap density, and achieve the improvement of electronic conductivity, reduction of unit cell volume, and improvement of diffusion coefficient. Effect
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Embodiment 1
[0025]Li2CO3 (99.73%), Cu (OH) (AR), BaCO3 (99.8%), FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material, according to 1mol Li: 0.00002mol Cu: 0.0003mol Ba: 1mol Fe: After mixing at a ratio of 1molP, in absolute ethanol (AR) medium, high-speed ball milling (speed 200r / mimn) for 20 hours. After drying at 105-120°C, the precursor was obtained. In an ordinary pure nitrogen (>99.5%) atmosphere, calcining at a high temperature of 500-750° C. for 24 hours to obtain the copper and barium activated lithium iron phosphate cathode material of the present invention.
Embodiment 2
[0027] Li2CO3 (99.73%), Cu (OH) (AR), BaCO3 (99.8%), FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material, according to 1mol Li: 0.00004mol Cu: 0.001mol Ba: 1mol Fe: After mixing 1mol P ratio, in absolute ethanol (AR) medium, high-speed ball milling for 20h (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 an ordinary pure nitrogen (>99.5%) atmosphere, calcining at a high temperature of 500-750° C. for 24 hours to obtain the copper and barium activated lithium iron phosphate cathode material of the present invention.
Embodiment 3
[0029] Li2CO3 (99.73%), Cu (OH) (AR), BaCO3 (99.8%), FeC2O4.2H2O (99.06%), NH4H2PO4 (98%) raw material, according to 1mol Li: 0.00005mol Cu: 0.003mol Ba: 1mol Fe: After mixing 1mol P ratio, in absolute ethanol (AR) medium, high-speed ball milling for 20h (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 an ordinary pure nitrogen (>99.5%) atmosphere, calcining at a high temperature of 500-750° C. for 24 hours to obtain the copper and barium activated lithium iron phosphate cathode material of the present invention.
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