中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 过程工程研究所
  3. 中国科学院过程工程研究所
A facile way to regenerate FePO4 center dot 2H(2)O precursor from spent lithium iron phosphate cathode powder: Spontaneous precipitation and phase transformation in an acidic medium

文献类型：期刊论文

作者Lou, Wen-bo2,3,4; Zhang, Yang2,4; Zhang, Ying2,4; Zheng, Shi-li2,4; Sun, Pei5; Wang, Xiao-jian2,4; Qiao, Shan2,4; Li, Jian-zhong3; Zhang, Yi2,4; Liu, Dong-yan1
刊名JOURNAL OF ALLOYS AND COMPOUNDS
出版日期2021-03-05
卷号856页码:12
ISSN号0925-8388
关键词FePO4 center dot 2H(2)O Acidic solution Precipitation Phase transformation Kinetics
DOI10.1016/j.jallcom.2020.158148
英文摘要Recycling the end-of-life lithium-ion batteries including the lithium iron phosphate (LiFePO4) battery has been one of the most important technology areas since electric vehicles are gradually dominating the way of transportation. For the recycling of LiFePO4 batteries, the regeneration of pure iron phosphate dihydrate (FePO4 center dot 2H(2)O) from spent cathode material is essential but difficult. The challenge is how to effectively synthesize battery-grade iron phosphate from the impurity-bearing acid solution by precipitation since the spent cathode powder usually holds various impurities. To avoid the introduction of impurities into the iron phosphate, a one-step spontaneous precipitation and phase transformation mode without acidity adjustment was preferred and studied in this work. The focus of this research included the process of phase transformation from amorphous to crystalline, and its effects on precipitation and the properties of the precipitate. It was interestingly found that there was an induction period for phase transformation from amorphous FePO4 center dot xH(2)O to monoclinic FePO4 center dot 2H(2)O during the precipitation, which was distinctly shortened with the elevated temperature. Phase transformation led to fast increased precipitation efficiency, morphology evolution, and composition change, which benefited the consistency of iron phosphate. Phase transformation could be kinetically described by the JMA equation, with a rate-limiting step of materials diffusion towards the nucleation point and an activation energy of 20.4 kJ/mol. The critical crystal size for transformation was increasing along with the temperature's raising, which was ascribed to the changes in the volume energy and the surface energy. The results in this study have built the feasibility of chemically regenerating FePO4 center dot 2H(2)O precursors from the spent cathode powder by precipitation purification in an acidic medium. (C) 2020 Elsevier B.V. All rights reserved.
WOS关键词ION BATTERIES ; SELECTIVE RECOVERY ; SURFACE-ENERGY ; FEPO4 ; LI ; CARBON ; LIFEPO4/C ; INDUSTRY ; CAPACITY ; KINETICS
资助项目Key Deployment Projects of Chinese Academy of Sciences[ZDRW_CN_2020-1] ; Sino-German Cooperation Research Project under the National Natural Science Foundation of China[51761135108] ; German Research Foundation[392417756] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A15]
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000610851500032
资助机构Key Deployment Projects of Chinese Academy of Sciences ; Sino-German Cooperation Research Project under the National Natural Science Foundation of China ; German Research Foundation ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/43457]  
专题中国科学院过程工程研究所
通讯作者Zhang, Ying; Zheng, Shi-li
作者单位1.Shenyang Univ, Normal Coll, Shenyang 110044, Peoples R China
2.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
3.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
5.Univ Utah, Mat Sci & Engn, Salt Lake City, UT 84112 USA
6.Tech Univ Dresden, Fac Chem & Food Chem, D-01062 Dresden, Germany
推荐引用方式
GB/T 7714		 Lou, Wen-bo,Zhang, Yang,Zhang, Ying,et al. A facile way to regenerate FePO4 center dot 2H(2)O precursor from spent lithium iron phosphate cathode powder: Spontaneous precipitation and phase transformation in an acidic medium[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,856:12.
APA Lou, Wen-bo.,Zhang, Yang.,Zhang, Ying.,Zheng, Shi-li.,Sun, Pei.,...&Weigand, Jan J..(2021).A facile way to regenerate FePO4 center dot 2H(2)O precursor from spent lithium iron phosphate cathode powder: Spontaneous precipitation and phase transformation in an acidic medium.JOURNAL OF ALLOYS AND COMPOUNDS,856,12.
MLA Lou, Wen-bo,et al."A facile way to regenerate FePO4 center dot 2H(2)O precursor from spent lithium iron phosphate cathode powder: Spontaneous precipitation and phase transformation in an acidic medium".JOURNAL OF ALLOYS AND COMPOUNDS 856(2021):12.

入库方式： OAI收割

来源：过程工程研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。