Direct Recycling of Ternary Lithium-Ion Batteries via Solvent-Assisted Separation of Cathode Materials DOI
Gong Cheng, Shiwen Zhang,

Wentuan Bi

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Effective separation of cathode active materials from Al foil is a critical step in the recycling spent lithium-ion batteries (LIBs). Conventional techniques, including thermal treatment, organic solvent dissolution, and alkaline etching, are often associated with challenges such as incomplete separation, high energy demand, environmental hazards. In this study, green organophosphonic acid, 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP), was utilized to achieve rapid effective delamination LiNi0.55Co0.15Mn0.3O2 foil. Complete accomplished just 4 min under mild conditions, leaching low 4.58%. Mechanistic investigations revealed that HEDP reacts form compact passivation layer on its surface, effectively suppressing further corrosion reducing binder adhesion. This eco-friendly cost-effective approach offers sustainable solution for LIBs.

Language: Английский

Direct Recycling of Ternary Lithium-Ion Batteries via Solvent-Assisted Separation of Cathode Materials DOI
Gong Cheng, Shiwen Zhang,

Wentuan Bi

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Effective separation of cathode active materials from Al foil is a critical step in the recycling spent lithium-ion batteries (LIBs). Conventional techniques, including thermal treatment, organic solvent dissolution, and alkaline etching, are often associated with challenges such as incomplete separation, high energy demand, environmental hazards. In this study, green organophosphonic acid, 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP), was utilized to achieve rapid effective delamination LiNi0.55Co0.15Mn0.3O2 foil. Complete accomplished just 4 min under mild conditions, leaching low 4.58%. Mechanistic investigations revealed that HEDP reacts form compact passivation layer on its surface, effectively suppressing further corrosion reducing binder adhesion. This eco-friendly cost-effective approach offers sustainable solution for LIBs.

Language: Английский

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