Work

Efficient Recycling of Spent LiCoO 2 Cathodes Via Confined Pore‐Assisted Simplified Direct Carbothermic Reduction Without External Reducing Agents

Year: 2025

Type: article

Abstract: As demand for lithium‐ion batteries increases, the supply of materials is increasingly constrained by their geographical concentration. This has spurred significant research into recycling spent batteries to enhance resource circulation. Currently, commercially applied recycling methods (such as pyrometallurgy and hydrometallurgy) face environmental and economic challenges, including waste acid and gas generation, high‐temperature heat treatment, and operational complexity. A promising alternative is the carbothermic reduction process, which operates at lower temperatures, minimizing costs and environmental emissions. However, this method still requires large quantities of external reducing agents. Therefore, this study aims to introduce a simplified direct carbothermic reduction (SDCR) process. The SDCR process leveraged carbon conductive materials and organic binders within the electrode as reducing agents. Additionally, the high compaction state created a conducive environment for reducing gases, promoting efficient reduction and material recovery. This approach reduces the reliance on external reducing agents and streamlines the re‐upcycling process, making it commercially viable.

Source: Energy & environment materials

DOI: 10.1002/eem2.70037

Authors: Donghun Kang, Joowon Im, Sujong Chae, Haeseong Jang, Minseong Ko

Institutions: Pukyong National University, Chung-Ang University

Language: English

Topic: Extraction and Separation Processes

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Affordable and clean energy, Climate action

Open Access status: hybrid

Estimated APC paid: $3,000