期刊
WASTE MANAGEMENT
卷 46, 期 -, 页码 523-528出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.wasman.2015.08.035
关键词
Lithium-ion batteries; Recycling; Ultrasonic cleaning; Cathode materials
资金
- National Natural Science Foundation of China [U1407120]
Cathode materials are difficult to separate from Al-foil substrates during the recycling of spent lithiumion batteries (LIBs), because of the strong bonding force present. In this study, ultrasonic cleaning was used to separate and recycle these cathode materials. The mechanism of separation was ascribed to the dissolution of polyvinylidene fluoride (PVDF) and the cavitation caused by ultrasound. Based on this mechanism, the key parameters affecting the peel-off efficiency of cathode materials from Al foil was identified as solvent nature, temperature, ultrasonic power, and ultrasonic time. The peel-off efficiency of cathode materials achieved, similar to 99% under the optimized conditions of N-methyl-2-pyrrolidone (NMP) cleaning fluid, 70 degrees C process temperature, 240 W ultrasonic power, and 90 mm of ultrasonication. The cathode materials separated from Al foil displayed a low agglomeration degree, which is beneficial to the subsequent leaching process. Finally, a new, environmentally-sound process was proposed to efficiently recycle cathode materials and Al from spent LIBs, consisting of manual dismantling, ultrasonic cleaning, and picking. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据