Recycling of LiMn2O4 Scraps from Lithium Ion Battery and Its Reuse in Supercapacitor Field
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摘要: 本文通过将锂离子电池正极废料锰酸锂转化为超级电容器材料MnS的方法来进行锰酸锂废料的再生利用。将正极废料溶解浸出后，调整废料浓度并加入硫源，水热得到MnS材料。X射线衍射、扫描电镜、透射电镜以及比表面分析仪测试的结果显示，水热法制备的MnS呈现良好的晶体结构，并具有较好的电容器特性。探究不同Mn2+浓度对最终产物性能影响发现：浸出液中Mn2+的浓度对最终产物的形貌、比表面积均有影响。其中当Mn2+浓度为0.5 M时，可以得到三维花状辐射结构。该辐射结构有利于提升电解液与材料之间的表面接触，从而促进材料电容性能。该种思路为锂离子电池正极材料的回收提供了新的思路，值得进一步的深入探究。
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关键词:
- 超级电容器
Abstract: In this paper, the LiMn2O4 scraps from spent Lithium ion batteries are designed to be transferred to MnS, which can be used as an active material for supercapacitor. The cathode scraps are dissolved and leached firstly, then the concentration of the leaching solution is adjusted with S-sources are added too, finally the MnS materials are obtained by hydrothermal the leaching solution. XRD, SEM, TEM and BET results show that the MnS can exhibit excellent crystal structure and good capacitor character. By investigating the impacts of Mn2+ concentration to the performance of the final products, some interesting results are obtained. It seems that the Mn2+ concentration has vital impact on the morphology of the MnS products and specific surface area. When the Mn2+ concentration equals to 0.5 M, MnS with 3D flower-like radiating structure can be obtained. This structure can enhance the contact between the material and electrolyte, resulting in better electrochemical performance. This paper can provide a new way in recycling of cathode scraps, which worth to be further investigated.-
Keywords:
- Supercapacitor
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期刊类型引用(3)
1. 刘友葵. 风光水氢储一体互补的再生能源制造系统. 南方能源建设. 2022(S1): 9-16 . 
百度学术
2. 王媛，杨茹，缪建麟，赵瑞瑞. 一步法回收锂离子电池三元正极材料及其性能影响. 华南师范大学学报(自然科学版). 2021(01): 36-41 . 百度学术
3. 李发闯，郭战永，张倩，郑泽宇，张云娜，吕潘良. 综合回收废锰酸锂电池中有价成分的实验研究. 中国有色冶金. 2021(04): 99-104 . 百度学术
其他类型引用(1)
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