Experimental Study on Synergistic Extraction for Separating Manganese and Iron from Waste Ternary Battery Leaching Solution

Article Chemistry, Analytical

Kinetics of Ni and Co Recovery via Oxygen-Enriched Pressure Leaching from Waste Lithium-Ion Batteries

Xuebin Peng et al.

Summary: During the comprehensive recovery and utilization of discarded lithium-ion batteries through acid leaching, a significant amount of NiS and CoS mixed materials are generated. The kinetics and rate-determining step of oxygen-rich pressurized acid leaching of Ni and Co were studied to enhance the metal recovery rate. It was found that under specific conditions, including sulfuric acid concentration of 95 g/L, liquid-to-solid ratio of 6:1, leaching time of 120 min, temperature of 110 degrees C, stirring speed of 400 r/min, 90% oxygen-rich atmosphere, and pressure of 1.2 MPa, the leaching rates of Ni and Co were above 99%. The leaching of Ni and Co followed the shrinking unreacted core model, and the leaching rates were described by the kinetic equation 1 - (1 - x)(1/3) = k center dot t. The apparent activation energies for Ni and Co leaching reactions were 50.87 and 45.6 kJ/mol, respectively, with the leaching process being controlled by the chemical reaction at the interface.

SEPARATIONS (2023)

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Review Energy & Fuels

Recovery and Recycling of Valuable Metals from Spent Lithium-Ion Batteries: A Comprehensive Review and Analysis

Tendai Tawonezvi et al.

Summary: The recycling of spent lithium-ion batteries (Li-ion Batteries) is of great interest due to the increasing demand for valuable metals and materials and the environmental concerns associated with their disposal. Various studies have focused on recycling used Li-ion batteries to produce battery materials or specific chemical compounds. Physical pre-treatment is usually employed to separate waste materials before further processing. Metallurgical processes are used to extract pure metals or separate contaminants. This review provides an overview of the current state of Li-ion battery recycling, with a focus on hydrometallurgy, and comprehensively reviews electrometallurgy and pyrometallurgy. It also critically analyzes the obstacles and energy-intensive nature of Li-ion battery recycling, offering recommendations for improvement and potential commercialization.

ENERGIES (2023)

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Article Chemistry, Analytical

High Value-Added Utilization of Waste Hydrodesulfurization Catalysts: Low-Cost Synthesis of Cathode Materials for Lithium-Ion Batteries

Junbo Zhou et al.

Summary: This work presents a novel method for preparing layered oxide cathode materials using a pure Ni and Co mixed solution obtained from waste HDS catalyst, which effectively removes impurity metal elements. The synthesized C-NCM material shows excellent electrochemical performance, offering potential industrial applications.

SEPARATIONS (2022)

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Article Metallurgy & Metallurgical Engineering