Chemical State of Co Element from Co-rich Crushed Products of Spent Lithium Ion Batteries After Thermal Treatment-中国粉体技术

Journal Online 2013 Vol.19

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Chemical State of Co Element from Co-rich Crushed Products of Spent Lithium Ion Batteries After Thermal Treatment

GE Linhan^{1 a}， WANG Ruili² ， HE Yaqun^{1 a， b}，ZHANG Tao^{1 a}， FU Rusan^{1 a}， LI Qiang^{1 a}

（1. a. School of Chemical Engineering and Technology; b. Advanced Analysis and Computation Center， China University of Mining and Technology， Xuzhou 221116； 2. HOOTECH Co. Ltd.，Xuzhou 221004， China）

Abstract：The chemical state of Co element from Co-rich crushed products of spent lithium ion batteries after thermal treatment was analyzed by XPS and XRD.The results indicate that Co element exists in the form of LiCoO₂.After thermal treatment,complex products including LiCoO₂,Co₃O₄,and Co₂AlO₄ etc.are generated in which Co₃O₄ has strong signal.Li_1-xCoO₂ and LiCoO₂ are two main chemical states of Co element in the original sample.The chemical state changes to Co₃O₄ after thermal treatment.Besides,there are undecomposed Li_1-xCoO₂,CoF3 and Co.Co element is enriched after thermal treatment and chemical state of Co element have been certified.

Keywords：spent lithium ion battery;thermal treatment;chemical state

中图分类号：X75 文献标志码：A

文章编号：1008-5548（2013）03-0051-04

DOI：10.3969/j.issn.1008-5548.2013.03.013

收稿日期：2012-11-21，修回日期：2012-12-06。

基金项目：江苏省普通高校研究生科研创新计划项目，编号：CXLX12_0965；固体废物处理与环境安全教育部重点实验室开放基金资助项目，编号：SWMES-2010-08。

第一作者简介：葛林瀚（1988—），男，硕士研究生，研究方向为二次资源回收利用。 E-mail： linhan.ge@gmail.com。

通信作者：王锐利（1972—），男，高级工程师，主要从事资源循环应用研究工作。 E-mail： wrl@hootech.com.cn。