With the environmental pollution and shortage of resources, the recycling and reusing of spent lithium-ion batteries become crucial. However, the complexity of recycling methods, associated with high cost, makes their recovery difficult. Herein, an effective and clean process to recycle anode materials from lithium-ion batteries and reuse graphite is proposed in this work. The graphite and copper foil of the anode are separated by electrolysis method, and the effects of parameters (voltages, inter-electrode distance, and electrolyte concentration) on the electrolysis process are investigated. The copper foil can be directly reused without further treatment, Cu²⁺ and Li⁺ in the electrolyte can be recovered by precipitation method. The purity of recovered graphite is about 95%, and the graphite can be reused to prepare the anode materials for lithium-ion batteries that exhibit excellent cycling stability and rate capability. The first discharge and charge specific capacities at a rate of 0.1 C are 427.81 mA h g⁻¹ and 350.47 mA h g⁻¹, respectively. The coulombic efficiency after the second cycle is observed to be about 98%.

随着环境污染和资源短缺，废旧锂离子电池的回收和再利用变得至关重要。然而，再循环方法的复杂性以及高成本使其难以回收。这里，在这项工作中提出了一种有效且清洁的方法，以从锂离子电池中回收负极材料并重新使用石墨。通过电解法分离阳极的石墨和铜箔，并研究了参数（电压，电极间距离和电解质浓度）对电解过程的影响。铜箔，Cu ²⁺和Li ⁺无需进一步处理即可直接重复使用电解质中的沉淀可以通过沉淀法回收。回收的石墨的纯度约为95％，该石墨可重复使用以制备具有优异循环稳定性和倍率性能的锂离子电池负极材料。在0.1 C的速率下的第一放电和充电比容量分别为427.81 mA h g ^-1和350.47 mA h g ^-1。观察到第二个循环后的库仑效率约为98％。