Preserving battery grade lithium carbonate requires attention to the following points:
Storage environment: battery grade lithium carbonate should be stored in a dry, well-ventilated place without direct sunlight. Avoid humidity, acidic or alkaline substance contact to prevent product deterioration or damage.
Temperature control: The ambient temperature for storing lithium carbonate needs to be within the range of 10~30℃, avoiding too high or too low temperature. Too high temperature will cause decomposition of lithium carbonate, which will affect its performance. Too low a temperature will affect the charging and discharging characteristics. In Qinghai and other areas where the temperature is low all year round, the preservation temperature is 4 degrees Celsius to 8 degrees Celsius, so that it can be preserved for a longer period of time.
Humidity control: Since lithium carbonate is easily deliquesced, a humid environment needs to be avoided when storing it. For long-term storage, it is recommended to use sealed packaging or moisture-proof cabinets to keep the relative humidity below 30%. At the same time, appropriate amount of desiccant, such as silica gel or anhydrous calcium chloride, can be placed in the container to absorb possible moisture.
Light control: Lithium carbonate will change when exposed to light, the color will deepen and the purity will decrease, so it is necessary to prevent too much light. When storing, it is recommended to use a light-blocking container or light-blocking cloth to block the light.
Regular inspection: Regularly check whether the stored battery-grade lithium carbonate has caking, discoloration, odor and other phenomena. If there is any abnormality, timely measures should be taken to deal with it in order to prevent the product from deterioration or damage.
Packaging and labeling: Although battery-grade lithium carbonate does not belong to the national regulations of the hazardous chemicals, but it will cause some harm to the human body and the environment. Therefore, it needs to be packaged before storage, and labeled and stored in strict accordance with the regulations.
Storage time: It is not recommended to store battery-grade lithium carbonate for a long time, because prolonged storage may affect its use. At the same time, pay attention to the shelf life of the battery, generally within 12 months, subject to the product specification. In areas such as Qinghai Province, the shelf life of battery grade lithium carbonate may be longer (more than 5 years) due to special environmental conditions, but this does not mean that it can be stored indefinitely.