Separation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene

Abstract Based on the structural characteristics of the anodes of lithium-ion batteries, an improved Hummers’ method is proposed to recycle the anode materials of spent lithium-ion batteries into graphene. In order to effectively separate the active material from the copper foil, water was selected...

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Autores principales:	Li Yang, Liu Yang, Guangri Xu, Qigao Feng, Yuanchao Li, Erqing Zhao, Jingjing Ma, Shumin Fan, Xiaobo Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/06cb6978da5c409ab33f679debefc4df
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spelling	oai:doaj.org-article:06cb6978da5c409ab33f679debefc4df2021-12-02T15:09:41ZSeparation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene10.1038/s41598-019-46393-42045-2322https://doaj.org/article/06cb6978da5c409ab33f679debefc4df2019-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-46393-4https://doaj.org/toc/2045-2322Abstract Based on the structural characteristics of the anodes of lithium-ion batteries, an improved Hummers’ method is proposed to recycle the anode materials of spent lithium-ion batteries into graphene. In order to effectively separate the active material from the copper foil, water was selected as an ultrasonic solvent in this experiment. In order to further verify whether lithium ions exist in the active material, carbon powder, it was digested by microwave digestion. ICP-AES was then used to analyse the solution. It was found that lithium ions were almost non-existent in the carbon powder. In order to further increase the added value of the active material, graphene oxide was obtained by an improved Hummers’ method using the carbon powder. The graphene material was also reduced by adding vitamin C as a reducing agent through a chemical reduction method using graphene oxide. Meanwhile, the negative graphite, graphite oxide and graphene samples were characterized by XRD, SEM, FTIR and TEM. The conductivity of the negative graphite, graphite oxide and graphene was tested. The results show that graphene prepared by a redox method has a better layered structure, less impurities and oxygen groups in its molecular structure, wider interlayer spacing and smaller resistivity.Li YangLiu YangGuangri XuQigao FengYuanchao LiErqing ZhaoJingjing MaShumin FanXiaobo LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-7 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Li Yang Liu Yang Guangri Xu Qigao Feng Yuanchao Li Erqing Zhao Jingjing Ma Shumin Fan Xiaobo Li Separation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene
description	Abstract Based on the structural characteristics of the anodes of lithium-ion batteries, an improved Hummers’ method is proposed to recycle the anode materials of spent lithium-ion batteries into graphene. In order to effectively separate the active material from the copper foil, water was selected as an ultrasonic solvent in this experiment. In order to further verify whether lithium ions exist in the active material, carbon powder, it was digested by microwave digestion. ICP-AES was then used to analyse the solution. It was found that lithium ions were almost non-existent in the carbon powder. In order to further increase the added value of the active material, graphene oxide was obtained by an improved Hummers’ method using the carbon powder. The graphene material was also reduced by adding vitamin C as a reducing agent through a chemical reduction method using graphene oxide. Meanwhile, the negative graphite, graphite oxide and graphene samples were characterized by XRD, SEM, FTIR and TEM. The conductivity of the negative graphite, graphite oxide and graphene was tested. The results show that graphene prepared by a redox method has a better layered structure, less impurities and oxygen groups in its molecular structure, wider interlayer spacing and smaller resistivity.
format	article
author	Li Yang Liu Yang Guangri Xu Qigao Feng Yuanchao Li Erqing Zhao Jingjing Ma Shumin Fan Xiaobo Li
author_facet	Li Yang Liu Yang Guangri Xu Qigao Feng Yuanchao Li Erqing Zhao Jingjing Ma Shumin Fan Xiaobo Li
author_sort	Li Yang
title	Separation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene
title_short	Separation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene
title_full	Separation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene
title_fullStr	Separation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene
title_full_unstemmed	Separation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene
title_sort	separation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/06cb6978da5c409ab33f679debefc4df
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Separation and recovery of carbon powder in anodes from spent lithium-ion batteries to synthesize graphene

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