In:
Green Chemistry, Royal Society of Chemistry (RSC), Vol. 24, No. 23 ( 2022), p. 9084-9093
Abstract:
Lithium carbonate (Li 2 CO 3 ), as one of the most important basic lithium salts, has a high demand in the lithium ion battery industry, including the preparation of cathode materials, lithium metal, and electrolyte additives. However, the traditional preparation process of Li 2 CO 3 is hampered by the introduction of Na + metal impurity, and the particle size is too large to meet the requirements of battery-grade products. Here, we propose a gas–liquid reactive crystallization process for the one-step preparation of battery-grade Li 2 CO 3 using CO 2 instead of Na 2 CO 3 as the precipitant. This strategy avoids the introduction of Na + metal impurity and can also capture and convert CO 2 . Meanwhile, microbubbles were introduced into the system to enhance the mass transfer and regulate the crystallization process to efficiently prepare Li 2 CO 3 products with the particle size meeting the requirements of the battery level. The kinetic parameters and crystallization mechanism of battery-grade Li 2 CO 3 prepared by gas–liquid reactive crystallization were quantitatively analyzed through in situ tests and calculations. The feasibility of using the prepared battery-grade Li 2 CO 3 as a raw material to synthesize an LiFePO 4 cathode for lithium ion batteries was verified. The strategy provides a new route for the controllable preparation of battery-grade Li 2 CO 3 and the conversion of CO 2 .
Type of Medium:
Online Resource
ISSN:
1463-9262
,
1463-9270
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1485110-6
detail.hit.zdb_id:
2006274-6
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