Factors affecting the solubility of lithium hydroxide
Jul,11,25
The solubility of lithium hydroxide is crucial to the performance of the electrolyte and is mainly affected by the following factors:
Temperature and pH value: Solubility increases significantly with increasing temperature, and alkaline environment (pH>7) is more conducive to dissolution;
Solvent system: The solubility in aqueous solution reaches 12.8 g/100g (20°C), but complexing agents need to be added to organic solvents to improve dispersibility;
Impurity interference: Impurities such as aluminum and fluorine will form insoluble matter, which can be purified by aluminum chloride-assisted leaching or phosphoric acid precipitation.
Improvement directions include the development of ternary electrolytes (such as LiOH-LiTFSI-PC system) or structural modifications (such as porous crystal design)
