A Sustainable Process for the Recovery of Anode and Cathode Materials Derived from Spent Lithium-Ion Batteries
A Sustainable Process for the Recovery of Anode and Cathode Materials Derived from Spent Lithium-Ion Batteries
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从废旧锂离子电池中回收阳极和阴极材料的可持续工艺
DOI：
10.3390/su11082363
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发表时间：
2019-04
期刊：
影响因子：
3.9
通讯作者：
Zhang Tao
中科院分区：
文献类型：
--
作者：
Zhang Guangwen;Du Zhongxing;He Yaqun;Wang Haifeng;Xie Weining;Zhang Tao
在废旧锂离子电池的回收过程中，正负极材料的回收是一个重要的环节。有机粘合剂降低了衍生自废LIB的电极材料的释放效率和浮选效率。在这项研究中，热解技术被用来提高回收的阴极和阳极材料从废锂离子电池去除有机粘合剂。研究了电极材料中有机物的热解特性，并在此基础上研究了热解参数对电极材料热解效率的影响。然后，采用浮选技术将阴极材料与阳极材料分离。结果表明，当热解温度为500 °C、热解时间为15 min、热解升温速率为10 °C/min时，电极材料的解离效率最佳，此时阴极材料的解离效率为98.23%，阳极材料的解离效率为98.89%。在这些热解条件下，电极材料的相特性不会改变。为了进一步提高电极材料的浮选效率，采用超声波清洗去除热解残渣。采用浮选工艺，阴极材料品位达到93.89%，回收率达到96.88%。
The recovery of cathode and anode materials plays an important role in the recycling process of spent lithium-ion batteries (LIBs). Organic binders reduce the liberation efficiency and flotation efficiency of electrode materials derived from spent LIBs. In this study, pyrolysis technology is used to improve the recovery of cathode and anode materials from spent LIBs by removing organic binders. Pyrolysis characteristics of organics in electrode materials are investigated, and on this basis, the effects of pyrolysis parameters on the liberation efficiency of electrode materials are studied. Afterwards, flotation technology is used to separate cathode material from anode material. The results indicate that the optimum liberation efficiency of electrode materials is obtained at a pyrolysis temperature of 500 °C, a pyrolysis time of 15 min and a pyrolysis heating rate of 10 °C/min. At this time, the liberation efficiency of cathode materials is 98.23% and the liberation efficiency of anode materials is 98.89%. Phase characteristics of electrode materials cannot be changed under these pyrolysis conditions. Ultrasonic cleaning was used to remove pyrolytic residues to further improve the flotation efficiency of electrode materials. The cathode material grade was up to 93.89% with a recovery of 96.88% in the flotation process.
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影响因子：
8.1
作者：
Zhang Tao;Yaqun He;Fangfang Wang;Linhan Ge;Xiang-nan Zhu;Hong Li
通讯作者：
Zhang Tao;Yaqun He;Fangfang Wang;Linhan Ge;Xiang-nan Zhu;Hong Li
影响因子：
8.4
作者：
Guangwen Zhang;Yaqun He;Yi-Wei Feng;Haifeng Wang;Xiang-nan Zhu
通讯作者：
Guangwen Zhang;Yaqun He;Yi-Wei Feng;Haifeng Wang;Xiang-nan Zhu
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影响因子：
13.6
作者：
Xiao Jiefeng;Li Jia;Xu Zhengming
通讯作者：
Xu Zhengming
通过热解提高废旧锂离子电池电极材料的释放
影响因子：
11.1
作者：
Zhang Guangwen;He Yaqun;Feng Yi;Wang Haifeng;Zhang Tao;Xie Weining;Zhu Xiangnan
通讯作者：
Zhu Xiangnan
从废旧电动汽车锂离子电池中生物浸出有价值的金属 Li、Co、Ni 和 Mn 以进行回收
影响因子：
11.1
作者：
Chen, Shi;Wang, Jing;Wu, Feng;Xin, Baoping
通讯作者：
Xin, Baoping