Enhancement in liberation of electrode materials derived from spent lithium-ion battery by pyrolysis
Enhancement in liberation of electrode materials derived from spent lithium-ion battery by pyrolysis
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通过热解提高废旧锂离子电池电极材料的释放
DOI：
10.1016/j.jclepro.2018.07.143
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发表时间：
2018-10
影响因子：
11.1
通讯作者：
Zhu Xiangnan
中科院分区：
文献类型：
--
作者：
Zhang Guangwen;He Yaqun;Feng Yi;Wang Haifeng;Zhang Tao;Xie Weining;Zhu Xiangnan
在这项研究中，热解利用，以提高电极颗粒的释放在回收过程中的废旧锂离子电池。研究了阴极材料和阳极材料的热解特性以及热解对电极材料析出的影响。利用扫描电子显微镜结合能谱仪和X射线光电子能谱仪研究了电极材料热解前后的矿物学特征变化。结果表明，电极颗粒表面包覆的有机粘结剂是导致电极材料难以从箔材上剥离以及电极材料之间难以相互剥离的主要原因。电极材料中有机粘结剂的最佳热解温度为500 °C，主要热解产物为含氟苯和酯类电解质。热解使阴极的热解效率从82.88%提高到99.78%，阳极的热解效率从88.08%提高到99.60%。同时，热解电极材料的充分释放需要较短的时间。热解电极的电极材料主要集中在-0.045mm粒级中，其中阴极和阳极材料的粒级分别高达82.49%和78.91%。5106.
In this study, pyrolysis was utilized to enhance the liberation of electrode particles in the recycling process of spent lithium-ion batteries. Pyrolysis characteristics of cathode and anode materials and the effects of pyrolysis on the liberation of electrode materials were fully investigated. Afterwards, scanning electron microscope coupled with an energy dispersive spectrometer and X-ray photoelectron spectroscopy were used to reveal the changes of mineralogical characteristics of electrode materials before and after pyrolysis. The results indicate that organic binder wrapped on electrode particles is the main reason that electrode materials are hard to liberate from foils and difficult to liberate each other. The optimum pyrolysis temperature of organic binders in electrode materials is 500 °C and the main pyrolysis products are fluorine-containing benzene and ester electrolyte. The liberation efficiency of cathode increases from 82.88% to 99.78% by pyrolysis, while that of anode increases from 88.08% to 99.60%. Meanwhile, adequate liberation of pyrolytic electrode materials requires a shorter period of time. Electrode materials from pyrolytic electrode are mainly concentrated in −0.045 mm size fraction, and they are up to 82.49% and 78.91% respectively for cathode and anode materials. 5106.
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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
通过机械分离和真空冶金回收锂离子电池中的金属
影响因子：
13.6
作者：
Xiao Jiefeng;Li Jia;Xu Zhengming
通讯作者：
Xu Zhengming
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
X射线光电子能谱法对废旧锂离子电池富钴破碎物进行表面分析
影响因子：
8.6
作者：
Fangfang Wang;Hong Li;Chenlong Duan;Caibin Wu
通讯作者：
Caibin Wu