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MES research in electrode, bacteria. In this study, cobalt oxide (Co3O4) powder was prepared by simple precipitation and heat-tre...

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Abstract

In this study, cobalt oxide (Co3O4) powder was prepared by simple precipitation and heat-treatment process of cobalt sulfate that is recovered from waste lithium-ion batteries (LIBs), and the effect of heat-treatment on surface properties of as-synthesized Co(OH)2 powder was systematically investigated. With different heat-treatment conditions, a phase of Co(OH)2 is transformed into CoOOH and Co3O4. The result showed that the porous and large BET surface area (ca. 116 m²/g) of Co3O4 powder was prepared at 200°C for 12 h. In addition, the lithium electroactivity of Co3O4 powder was investigated. When evaluated as an anode material for LIB, it exhibited good electrochemical performance with a specific capacity of about 500 mAh g⁻¹ at a current density of C/5 after 50 cycles, which indicates better than those of commercial graphite anode material.

Keywords

AnodeLithium (medication)CobaltCobalt oxideElectrochemistryLithium cobalt oxide

Identifiers

DOI
10.24425/amm.2024.147787
Journal
Archives of Metallurgy and Materials
Year
2024