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Effect of impeller type on preparing spherical and dense Ni1-x-yCoxMny(OH)(2) precursor via continuous co-precipitation in pilot scale: A case of Ni0.6Co0.2Mn0.2(OH)(2)
Zhu, Quanhong1,2; Xiao, Hang1,2; Zhang, Ruchao3; Geng, Shujun1,2; Huang, Qingshan1,2,4
2019-09-20
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume318Pages:1-13
AbstractThe spherical and dense Li[Ni1-x-yCoxMny]O-2 particles work excellently as the cathode material for Li-ion secondary batteries. The key to their preparation lies in synthesizing the spherical and dense Ni1-x-yCoxMny(OH)(2) precursor via co-precipitation in a mechanically stirred tank reactor. The effect of impeller type on the precursor property was investigated by taking Ni0.6Co0.2Mn0.2(OH)(2) as an example. Four different types of impellers were tested and compared, which were the propeller turbine (PT), pitched blade turbine (PBT), flat blade turbine (FBT) and Rushton turbine (RT). Only with the PT could the spherical and dense precursor be prepared, whose tap density exceeded 2.0 g/mL. As expected, the LiNi0.6Co0.2Mn0.2O2 obtained in this case exhibited the best electrochemical property, which delivered a discharge capacity of 182.3 mAh/g at 0.2C rate between 2.7 and 4.3 V. The capacity retention was 97.9% after 200 cycles at 2C rate. The different properties of the precursors resulted from the different flow fields in the reactor. The single-loop flow field excited by the PT caused the nuclei to grow into flat and thick flaky primary particles, which then could assemble tightly to form the dense secondary particles. Additionally, the circulation of secondary particles in the whole reactor further enabled them to grow, consolidate, become spherical and smooth by adsorbing the free nuclei and primary particles. On the other hand, the double-loop flow field generated by the FBT or RT caused the primary particles to be thin and curve, which could only pile up loosely to form the secondary particles. What's worse, the secondary particles were entrapped in the lower loop, having little chance to grow and consolidate by adsorbing the nuclei and primary particles that were mainly formed in the upper loop. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordLi-ion battery Precursor Co-precipitation Impeller Ni0.6Co0.2Mn0.2(OH)(2)
DOI10.1016/j.electacta.2019.06.008
Language英语
WOS KeywordLINI0.6CO0.2MN0.2O2 CATHODE MATERIAL ; ELECTROCHEMICAL PERFORMANCE ; RUSHTON TURBINE ; LITHIUM ; FLOW
Funding ProjectNational Natural Science Foundation of China[21808234] ; National Natural Science Foundation of China[21878318] ; National Natural Science Foundation of China[91434114] ; Instrument Developing Project of the CAS[YZ201641] ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the CAS[XDA21060400] ; QIBEBT of the CAS[QIBEBT ZZBS201803] ; Dalian National Laboratory for Clean Energy of the CAS[QIBEBT ZZBS201803] ; CAS Key Technology Talent Program
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
Funding OrganizationNational Natural Science Foundation of China ; Instrument Developing Project of the CAS ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the CAS ; QIBEBT of the CAS ; Dalian National Laboratory for Clean Energy of the CAS ; CAS Key Technology Talent Program
WOS IDWOS:000478969600001
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30591
Collection中国科学院过程工程研究所
Corresponding AuthorHuang, Qingshan
Affiliation1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol QIBEBT, Key Lab Biofuels, Qingdao 266101, Shandong, Peoples R China
2.Dalian Natl Lab Clean Energy DNL, Dalian 116023, Liaoning, Peoples R China
3.Qingdao Univ Sci & Technol, Qingdao 266042, Shandong, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Quanhong,Xiao, Hang,Zhang, Ruchao,et al. Effect of impeller type on preparing spherical and dense Ni1-x-yCoxMny(OH)(2) precursor via continuous co-precipitation in pilot scale: A case of Ni0.6Co0.2Mn0.2(OH)(2)[J]. ELECTROCHIMICA ACTA,2019,318:1-13.
APA Zhu, Quanhong,Xiao, Hang,Zhang, Ruchao,Geng, Shujun,&Huang, Qingshan.(2019).Effect of impeller type on preparing spherical and dense Ni1-x-yCoxMny(OH)(2) precursor via continuous co-precipitation in pilot scale: A case of Ni0.6Co0.2Mn0.2(OH)(2).ELECTROCHIMICA ACTA,318,1-13.
MLA Zhu, Quanhong,et al."Effect of impeller type on preparing spherical and dense Ni1-x-yCoxMny(OH)(2) precursor via continuous co-precipitation in pilot scale: A case of Ni0.6Co0.2Mn0.2(OH)(2)".ELECTROCHIMICA ACTA 318(2019):1-13.
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