Valorization of Cobalt from Waste LIB Cathode through Cobalt Oxalate and Cobalt Oxide Synthesis by Leaching-Solvent Extract-Precipitation Stripping

• Autorzy: Swain B. , Lee J.-C. , Lee C.-G.

Identyfikatory

DOI

10.24425/122439

• Języki publikacji: EN

Abstrakty

EN

An ecoefficient, economical and sustainable valorization process for the synthesis of Co₃O₄ from waste lithium-ion battery (LIB) by leaching-solvent extract-scrubbing-precipitation stripping route has been developed. Through an optimization, the waste LIB cathode was leached using 2000 mole/m³ of H₂SO₄ and 5 Vol. % of the H₂O₂ at a pulp density of 100 kg/m³ under leaching time 60 minutes and temperature 75°C. From the separated leach liquor, cobalt was purified by saponified Cyanex 272. From cobalt, loaded Cyanex 272 impurities were scrubbed and the CoC₂O₄·2H₂O was recovered through precipitation stripping. Finally, the precipitate was calcined to synthesize Co₃O₄, which is a precursor for LIB cathode materials manufacturing. From TGA-DTA, followed by XRD analysis it was confirmed that at 200°C the CoC₂O₄·2H₂O can be converted to anhydrous CoC₂O₄ and at 350°C the anhydrous can be converted to Co₃O₄ and at 1100°C the Co₃O₄ can be converted to CoO. Through reported route waste LIB can back to LIB manufacturing process through a versatile and flexible industrial approach.

Słowa kluczowe

EN

valorization of cobalt; cobalt oxide powder; rod-shaped cobalt oxalate; precipitation stripping

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 2
• Strony: 1037--1042
• Opis fizyczny: Bibliogr. 18 poz., fot., rys., wykr.

Twórcy

autor

Swain B.

• Advanced Materials & Processing Center, Institute for Advanced Engineering (IAE), Yongin, Republic of Korea

autor

Lee J.-C.

• Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 305-350, Republic of KoreaMineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 305-350, Republic of Korea

autor

Lee C.-G.

• Advanced Materials & Processing Center, Institute for Advanced Engineering (IAE), Yongin, Republic of Korea

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).