Prussian-blue type sodium ion battery positive electrode material and preparation method therefor
A sodium-ion battery and Prussian blue technology, which is applied in the field of sodium-ion battery cathode materials and its preparation, can solve problems such as capacity loss, and achieve the effects of reducing capacity fading, excellent performance, and low cost
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Embodiment 1
[0031] 1) Dissolve 0.968g of sodium ferrocyanide decahydrate in 100mL of deionized water to obtain a 20mmol / L sodium ferrocyanide solution.
[0032] 2) Dissolve 0.398g of ferrous chloride tetrahydrate in 100mL of deionized water to obtain a 20mmol / L ferrous chloride solution.
[0033] 3) Dissolve 0.285g of nickel dichloride hexahydrate and 0.159g of ferrous chloride tetrahydrate in 100mL of deionized water to obtain a mixed solution with a total cation concentration of 20mmol / L.
[0034] 4) Use as attached figure 1The shown device carries out co-precipitation reaction, and container A is mixed solution, and in container B is ferrous chloride solution, and container C is sodium ferrocyanide solution, and D is reaction vessel, and deionized water is filled in reaction vessel; A and container B, container B and reaction container, container C and reaction container are all connected by a catheter with a peristaltic pump; wherein, container A is connected at the beginning of the ...
Embodiment 2
[0039] 1) Dissolve 0.242g of sodium ferrocyanide decahydrate in 100mL of deionized water to obtain a 5mmol / L sodium ferrocyanide solution.
[0040] 2) Dissolve 0.099g of ferrous chloride tetrahydrate in 100mL of deionized water to obtain a 5mmol / L ferrous chloride solution.
[0041] 3) Dissolve 0.050 g of manganese dichloride tetrahydrate and 0.050 g of ferrous chloride tetrahydrate in 100 mL of deionized water to obtain a mixed solution with a total cation concentration of 5 mmol / L.
[0042] 4) same as embodiment 1, utilize as attached figure 1 The setup shown performs the co-precipitation reaction. Among them, container A is inserted at the beginning of the reaction. During the reaction process, the reaction vessel was filled with nitrogen gas, the flow rate was 20mL / min, the reaction vessel was heated to 25°C by a magnetic stirrer, and the flow rate of all peristaltic pumps was the same as 10mL / h, until the sodium ferrocyanide solution in vessel C was consumed When finis...
Embodiment 3
[0045] 1) Dissolve 4.84g of sodium ferrocyanide decahydrate in 100mL of deionized water to obtain a 100mmol / L sodium ferrocyanide solution.
[0046] 2) Dissolve 1.99g of ferrous chloride tetrahydrate and 0.5mg of vitamin C in 100mL of deionized water to obtain a 100mmol / L ferrous chloride solution.
[0047] 3) Dissolve 2.380 g of cobalt dichloride hexahydrate in 100 mL of deionized water to obtain a cobalt chloride solution with a total cation concentration of 100 mmol / L.
[0048] 4) same as embodiment 1, utilize as attached figure 1 The setup shown performs the co-precipitation reaction. Wherein, container A is inserted when the sodium ferrocyanide solution balance in container C is 10mL. During the reaction process, the reaction vessel was filled with argon gas at a flow rate of 100mL / min. The reaction vessel was heated to 90°C by a magnetic stirrer, and the flow rate of all peristaltic pumps was the same as 10mL / h. After consumption, turn off all peristaltic pumps and st...
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