CAS OpenIR
Epitaxial Regeneration of Spent Graphite Anode Material by an Ecofriendly In-Depth Purification Route
Da, Haoran1,2; Gan, Min3; Jiang, Danfeng1; Xing, Chunxian1; Zhang, Zhouyang3; Fei, Linfeng3; Cai, Yingjun1; Zhang, Haitao1,2,4; Zhang, Suojiang1,2
2021-12-06
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN2168-0485
Volume9Issue:48Pages:16192-16202
AbstractRecovery of spent graphite (SG) anode has been largely overlooked and undervalued due to the difficult regeneration process and the relative low price of graphite compared to valuable elements in the cathode. Moreover, lacking feasible low-cost techniques for the recovery of SG seriously restricts the development of all-component recycling of end-of-life batteries. Here, a novel in-depth purification process via KOH-NaOH composite alkali etching is proposed to eliminate impurities incorporated in SG. Residual acid-insoluble impurities, such as Al- and Fe-related compounds, can be removed effectively by alkali roasting treatment at 180-300 degrees C. Furthermore, in situ TEM investigation is conducted to unravel the gradual graphitization of the coating layer and the construction of Li+ transport channels between the newly formed structures and the original graphite bulk particles via an epitaxial growth manner during the regeneration process. After optimized purification and regeneration treatments, the recycled graphite can be used suitably as a regenerated anode, and a full cell containing commercial LiFePO4 and recycled graphite shows satisfactory capacity retention of 85.8% after 500 cycles at 1 C. This work demonstrates a promising recyclization route of SG anodes.
Keywordspent graphite recycling purification regeneration structural repairment
DOI10.1021/acssuschemeng.1c05374
Language英语
WOS KeywordLITHIUM-ION BATTERIES ; NATURAL GRAPHITE ; LI-ION ; ELECTRODE MATERIALS ; RECYCLING LITHIUM ; PERFORMANCE ; RECOVERY ; DEGRADATION ; KOH ; CATHODE
Funding ProjectNational Key Research and Development Program of China[2019YFA0705603] ; Key Science and Technology Special Project of Henan Province[202102210106] ; Zhengzhou major Science and technology projects[2019CXZX0074] ; Key Program of Chinese Academy of Sciences[ZDRW_CN_2020-1] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-JSC011] ; Major Program of National Natural Science Foundation of China[21890762] ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China[21921005]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
Funding OrganizationNational Key Research and Development Program of China ; Key Science and Technology Special Project of Henan Province ; Zhengzhou major Science and technology projects ; Key Program of Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, CAS ; Major Program of National Natural Science Foundation of China ; Science Fund for Creative Research Groups of the National Natural Science Foundation of China
WOS IDWOS:000753959800020
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/51951
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Haitao; Zhang, Suojiang
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Nanchang Univ, Sch Mat Sci & Engn, Nanchang 330031, Jiangxi, Peoples R China
4.Zhengzhou Inst Emerging Ind Technol, Zhengzhou Key Lab Energy Storage Sci & Technol, Zhengzhou 450003, Peoples R China
Recommended Citation
GB/T 7714
Da, Haoran,Gan, Min,Jiang, Danfeng,et al. Epitaxial Regeneration of Spent Graphite Anode Material by an Ecofriendly In-Depth Purification Route[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2021,9(48):16192-16202.
APA Da, Haoran.,Gan, Min.,Jiang, Danfeng.,Xing, Chunxian.,Zhang, Zhouyang.,...&Zhang, Suojiang.(2021).Epitaxial Regeneration of Spent Graphite Anode Material by an Ecofriendly In-Depth Purification Route.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,9(48),16192-16202.
MLA Da, Haoran,et al."Epitaxial Regeneration of Spent Graphite Anode Material by an Ecofriendly In-Depth Purification Route".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 9.48(2021):16192-16202.
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