Graphite-like phase carbon nitride coated [alpha]-Fe2O3 material, and preparation and application thereof
A graphite phase carbon nitride and coating technology, which is applied in the direction of electrochemical generators, active material electrodes, electrical components, etc., can solve the problems of low initial Coulombic efficiency, volume expansion during charging and discharging, and difficulty in meeting future needs. Achieve the effects of thin and uniform coating layer, enhanced electrical conductivity, and stable cycle performance
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[0030] Example 1
[0031] A kind of graphite-like phase carbon nitride coated α-Fe 2 O 3 The preparation method of the material includes the following steps: add 0.01 mol of ferric nitrate to 200 ml of deionized water to dissolve, then add 0.05 mol of urea, magnetically stir for 1 h, and ultrasonic for 0.5 h to disperse uniformly to obtain a precursor solution; take the precursor solution in a tube furnace In an air atmosphere, heat up to 200°C at a rate of 3°C / min, sinter for 2 hours, then heat up to 400°C at a rate of 3°C / min, sinter for 2 hours, and then take out and wash with deionized water alternately 3 times to medium Performance, vacuum drying at 80℃ for 24h to obtain graphite-like phase carbon nitride coated α-Fe 2 O 3 material.
Example Embodiment
[0032] Example 2
[0033] A kind of graphite-like phase carbon nitride coated α-Fe 2 O 3 The preparation method of the material includes the following steps: add 0.01 mol of ferric nitrate to 200 ml of deionized water to dissolve, then add 0.05 mol of urea, magnetically stir for 1 h, and ultrasonic for 0.5 h to disperse uniformly to obtain a precursor solution; take the precursor solution in a tube furnace In an air atmosphere, heat up to 300°C at a rate of 3°C / min, sinter for 2h, then heat up to 600°C at a rate of 3°C / min, sinter for 2h, and then take out and wash with deionized water alternately 3 times to medium Performance, vacuum drying at 80℃ for 24h to obtain graphite-like phase carbon nitride coated α-Fe 2 O 3 material.
Example Embodiment
[0034] Example 3
[0035] A kind of graphite-like phase carbon nitride coated α-Fe 2 O 3 The preparation method of the material includes the following steps: adding 0.01 mol of ferric nitrate to 200 ml of deionized water to dissolve, then adding 0.1 mol of urea, magnetic stirring for 1 h, and ultrasonic for 0.5 h to disperse uniformly to obtain a precursor solution; taking the precursor solution in a tube furnace In an air atmosphere, heat up to 200°C at a rate of 3°C / min, sinter for 2 hours, then heat up to 600°C at a rate of 3°C / min, sinter for 2 hours, and then take out and wash with deionized water alternately 3 times to medium Performance, vacuum drying at 80℃ for 24h to obtain graphite-like phase carbon nitride coated α-Fe 2 O 3 material.
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