Original scientific paper

Study on the mechanism of cobalt recovery from waste lithium cobaltate batteries in citric acid system

X. Y. Liu ; School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China
Y. Y. Wang ; School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China
H. Jin ; School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, China

Abstract

The waste lithium cobalt acid batteries were utilized as raw materials to separate out LiCoO₂ cathode material. Citric acid was used to leach cathode material, and LiCoO₂ leaching solution was electrodeposited to obtain cobalt plating, in the meantime the Li2+ ions were enriched. The optimized conditions of leaching process are 1,2 mol/L citric concentration and 0,35 mol/L sodium thiosulfate concertation, the leaching efficiency of cobalt and lithium is 97,5 % and 97,0 % respectively. At pH 4, the smooth cobalt coating with fine grains can be obtained on the surface of the stainless-steel cathode.

Keywords

cobalt recovery; battery; citric acid; electrocrystallization; X-ray research

Hrčak ID:

307433

URI

https://hrcak.srce.hr/307433

Publication date:

1.1.2024.

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