An electric field-controlled selective crystallization synthesis of double perovskite magnesium ion battery anode material
A magnesium-ion battery, selective crystallization technology, applied in the direction of battery electrodes, negative electrodes, secondary batteries, etc., can solve the problems of complex matrix action mechanism, shorten the diffusion time of magnesium ions, and material lattice transformation, so as to accelerate the migration ability and The rate of redox reaction, the effect of reducing electron migration resistance and improving electronic conductivity
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Embodiment 1
[0021] Embodiment 1: Lithium nitrate, magnesium nitrate hexahydrate, yttrium nitrate hexahydrate, copper nitrate trihydrate, zirconium nitrate pentahydrate, zinc nitrate hexahydrate, niobium pentoxide according to stoichiometric formula MgY 0.7 Li 0.3 Zr 0.8 Cu 0.1 Zn 0.1 NbO 6 Put it into a ball mill, the mass ratio of the ball mill and the material is 20:1, and ball mill at a speed of 400 rpm for 20 hours. The ball-milled material was heated up to 900°C at a rate of 10°C / min in a tube furnace, and then a DC voltage was applied to both ends of the tube furnace, with a voltage of 900V. Cool the furnace to 30°C; grind the cooled material in a mortar for 12 minutes, and immerse it in a saturated solution of lithium metaborate at a constant temperature of 30°C under constant stirring at a speed of 1200 rpm with a polytetrafluoroethylene stirring paddle. The mass ratio of the immersed cooled material was 10:1. After stirring for 9 minutes, the constant temperature was lowered...
Embodiment 2
[0022] Embodiment 2: Lithium nitrate, magnesium nitrate hexahydrate, yttrium nitrate hexahydrate, copper nitrate trihydrate, zirconium nitrate pentahydrate, zinc nitrate hexahydrate, niobium pentoxide according to stoichiometric formula MgY 0.7 Li 0.3 Zr 0.8 Cu 0.1 Zn 0.1 NbO 6 Put into the ball mill, the mass ratio of the ball mill and the material is 20:1, and ball mill for 15 hours at a speed of 400 rev / min. The ball-milled material was heated up to 900°C at a rate of 8°C / min in a tube furnace, and then a DC voltage was applied to both ends of the tube furnace, with a voltage of 900V. Cool the furnace to 30°C; grind the cooled material in a mortar for 12 minutes, and immerse it in a saturated solution of lithium metaborate at a constant temperature of 30°C under constant stirring at a speed of 1000 rpm with a polytetrafluoroethylene stirring paddle. The mass ratio of the immersed cooled material was 10:1. After stirring for 7 minutes, the constant temperature was lower...
Embodiment 3
[0023] Embodiment 3: Lithium nitrate, magnesium nitrate hexahydrate, yttrium nitrate hexahydrate, copper nitrate trihydrate, zirconium nitrate pentahydrate, zinc nitrate hexahydrate, niobium pentoxide according to stoichiometric formula MgY 0.7 Li 0.3 Zr 0.8 Cu 0.1 Zn 0.1 NbO 6 Put it into a ball mill, the mass ratio of the ball mill to the material is 20:1, and ball mill for 10 hours at a speed of 200 rpm. The ball-milled material was heated to 800°C at a rate of 2°C / min in a tube furnace, and then a DC voltage of 600V was applied to both ends of the tube furnace. Cool the furnace to 30°C; grind the cooled material in a mortar for 6 minutes, and immerse it in a saturated solution of lithium metaborate at a constant temperature of 30°C under constant stirring at a speed of 900 rpm with a polytetrafluoroethylene stirring paddle. The mass ratio of the mass to the immersed cooled material was 10:1. After stirring for 5 minutes, the constant temperature was lowered to 20°C an...
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