Method for preparing battery-grade iron phosphate
A ferric phosphate, battery-level technology, applied in the field of electrochemistry, can solve the problems of inability to realize continuous large-scale production of ferric phosphate, low electrolysis efficiency of electrolytic method, large amount of wastewater treatment, etc., achieve high synthesis efficiency, low cost, and ensure repeatability The effect of using
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0045] In the electrolytic cell, the iron plate is used as the anode, the graphite plate is used as the cathode, the lithium chloride aqueous solution (LiCl content is 20g / L) is used as the electrolyte, the pH value is adjusted to 10 with lithium hydroxide, and the current density at room temperature is 500A / m 2 For the electrolysis of iron plates, special attention should be paid to safety because hydrogen gas is generated at the cathode; after the electrolysis is completed, a large amount of precipitated products appear in the lower part of the electrolytic tank; hot air at 150 ° C is blown into the solution, and it can be found Within 30 minutes, the lower layer precipitated into a brown floc, and then the reaction solution after generating ferric hydroxide was transferred to the storage tank and left to stand for 24 hours. It can be observed that the mixed reaction solution is separated, the lower layer is a brown precipitate, and the upper layer For the clear liquid, the s...
Embodiment 2
[0047] In the electrolytic cell, the iron rod is used as the anode, the iron plate is used as the cathode, the electrolyte is 40g / L LiCl aqueous solution, the pH is adjusted to 12 with lithium hydroxide, and the current density at room temperature is 100A / m 2 , for the electrolysis of iron rods, because hydrogen gas is generated at the negative electrode, special attention should be paid to safety. When the ferrous hydroxide precipitate is formed at the bottom of the electrolytic cell, the reaction solution after the ferrous hydroxide is continuously pumped into the insoluble anode suspension electrolytic cell for oxidative electrolysis to prepare ferric hydroxide; the dissolved iron electrolytic cell is filled into the circulating electrolysis at the same time liquid to achieve tank liquid level balance. The prepared yellow-brown ferric hydroxide precipitation mixture is left to stand, and the supernatant is drawn out and returned to the electrolytic cell for use as a circula...
Embodiment 3
[0049] Such as figure 1 As shown, iron plates are used at the same time in the anode and cathode in the electrolytic cell, the electrolyte is 30g / L LiCl aqueous solution, the pH is adjusted to 9 with lithium hydroxide, and the current density at room temperature is 1000A / m 2 , Carry out the electrolysis of the iron plate, because hydrogen gas is generated at the negative electrode, special attention should be paid to safety. When ferrous hydroxide precipitates at the bottom of the electrolytic cell, the reaction liquid after ferrous hydroxide is intermittently pumped into the bubbling air oxidation tank. Since the liquid phase is an alkaline environment, a large amount of air is blown in at room temperature , ferrous hydroxide is easily oxidized into yellow-brown ferric hydroxide. In order to shorten the reaction time, the ferrous hydroxide was oxidized to ferric hydroxide by blowing hot air at 120°C, and after 30 minutes of air oxidation, the reaction solution after ferric h...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More