热解
材料科学
石墨
阳极
电池(电)
电极
球磨机
锂离子电池
化学工程
锂(药物)
锂电池
复合材料
离子
化学
有机化学
医学
功率(物理)
物理
物理化学
量子力学
离子键合
工程类
内分泌学
作者
Li Zhao,Xinyu Zhang,Yao Lu,Han Jiang,Yanqin Huang,Ming-xin Xu,Qiang Lü
出处
期刊:Energy & Fuels
[American Chemical Society]
日期:2024-01-05
卷期号:38 (2): 1310-1318
标识
DOI:10.1021/acs.energyfuels.3c04038
摘要
The recycling of spent lithium-ion batteries is in urgent demand, while organic binders hinder the recovery of electrode materials. In this study, a pyrolysis-coupled mechanical milling method was proposed to recover electrode materials from a spent lithium-ion battery. The results showed that pyrolysis removed the organic binders inside the spent battery, and after the mechanical milling, the total recovery ratio of electrode materials increased from 38.91 to 93.70% under the conditions with a pyrolysis temperature of 650 °C, milling duration of 15 min, and grinding ball ratio of 2:3. Meanwhile, the recovery ratios of cathode metals and anode graphite reached 97.89 and 86.90%, respectively. On the basis of the characterization results, it was determined that the chemical valences of the recovered metals were reduced by the reductive pyrolysis gases, whereas the graphitization degree of the recovered graphite decreased dramatically as a result of the presence of pyrolysis char. The findings presented herein offered a simple and eco-friendly option for the recovery of electrode materials from a spent lithium-ion battery as well as recycling noble metals and graphite resources.
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