Regeneration of anode materials from complex graphite residue in spent lithium-ion battery recycling process

Abstract

Complex graphite residue from spent lithium-ion battery processing is a typical hazardous waste, and its high-value utilization is of great significance to environmental protection. Due to high content of impurity...

A sustainable delamination method to completely separate spent cathode foils via biomass-derived γ-valerolactone

“…The resource consumption and waste generation during recycling have important impacts on the environmental benefits and economic viability of spent LIBs recycling. 65 Herein, the EverBatt model developed by the Argonne National Laboratory was used to evaluate the GVL-based direct recycling method with respect to these variables. 66 Pyrometallurgical recycling has the advantages of high chemical reaction rates, large treatment capacity, relatively flexible feed, and simple operation, which is a relatively mature and dominant recycling process.…”

Degradation Mechanisms of Electrodes Promotes Direct Regeneration of Spent Li‐Ion Batteries: A Review

“…Based on the above discussion, strategies for the direct recycling of graphite need to consider defective structures, LiC x , SEI, organic binders, and impurities (deposited Ni, Co, Mn on the surface of graphite) on the surface of graphite. [182][183][184][185][186][187] Wang et al [40] mixed the SG that had just been collected from the disassembled battery with water to utilize the high reactivity of LiC x , which facilitates the removal of encapsulated Li from the SG structure. and eventually converted them into Li 2 CO 3 , which can be further used for the regeneration of spent cathode.…”

Fundamentals, status and challenges of direct recycling technologies for lithium ion batteries

“…20b). 258 The procedures of these traditional graphite recycling methods are relatively simple, so it is easy to make small adjustments to one of the steps involved to achieve the direct upcycling of graphite. Some research groups have added steps to eventually form a suitable coating layer on the surface of regenerated graphite to improve its electrochemical performance.…”

“…Fig.20(a) Schematic of the failure and regeneration processes of a graphite anode produced by water treatment,248 Copyright 2019, Elsevier; (b) diagram of the direct recycling of highly contaminated graphite residue by molten alkali-assisted acid leaching,258 Copyright 2022, Royal Society of Chemistry; (c) diagram of the DES assisted repair processes of degraded graphite,263 Copyright 2023, Elsevier; (d) the principle and temperature curve of graphite anode flash recycling,265 Copyright 2023, Wiley; (e) diagram of the process of extracting Li from a graphite anode to directly recycle spent cathode material,270 Copyright 2022, American Chemical Society.…”