Synthesis and electrochemical performance of CeO2-LiNi0.8Co0.1Mn0.1O2 cathode material

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  • School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009

Received date: 2020-02-18

  Revised date: 2021-03-02

  Online published: 2021-06-10

Abstract

The Ni0.8Co0.1Mn0.1(OH)2 precursor was firstly prepared by the coprecipitation method,and then the CeO2 coated Ni0.8Co0.1Mn0.1(OH)2 material was obtained via a chemical bath method by using Ce(NO3)3·6H2O and C6H12N4 as reagents.Further,the CeO2-coated precursor and Li2CO3 were evenly mixed and calcined under oxygen atmosphere to get CeO2 coated LiNi0.8Co0.1Mn0.1O2(CeO2-LiNi0.8Co0.1Mn0.1O2) cathode material.The phase,morphology and element distribution of the cathode material were characterized by XRD,SEM and other technologies,and also investigated their electrochemical performances via galvanostatic charge/discharge instrument and electrochemical workstation.The results shown that the 2wt% CeO2 coated composite presented superior initial discharge capability (195.8mAh/g at 0.2C),compared with uncoated cathode material (186.1mAh/g at 0.2C).Further,the 2wt% CeO2 coated composite also exhibited better cycle property (with capacity retention of 85.0% after 150 cycles at 0.5C) to that of the uncoated cathode material.The presence of moderate CeO2 layer between the electrolyte and electrode material can decrease the electrochemical resistance of the cathode,thus enhancing its discharge capability and stability.A reliable strategy was provided to enhance the electrochemical properties of high nickel ternary cathode materials.

Cite this article

Wang Tongzhen, Cao Jun, Xie Qiannan, Liu Guoqiang . Synthesis and electrochemical performance of CeO2-LiNi0.8Co0.1Mn0.1O2 cathode material[J]. New Chemical Materials, 2021 , 49(5) : 166 -170 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.05.038

References

[1] Manthiram A,Knight J C,Myung S T,et al.Nickel-rich and lithium-rich layered oxide cathodes:progress and perspectives[J].Advanced Energy Materials,2016,6(1):1501010.
[2] Kim J,Lee J,Ma H,et al.Controllable solid electrolyte interphase in nickel-rich cathodes by an electrochemical rearrangement for stable lithium-ion batteries[J].Advanced Materials,2018,30(5):1704309.
[3] Song B H,Li W D,Yan P F,et al.A facile cathode design combining Ni-rich layered oxides with Li-rich layered oxides for lithium-ion batteries[J].Journal of Power Sources,2016,325:620-629.
[4] Sun Y K,Kim D H,Yoon C S,et al.A novel cathode material with a concentration-gradient for high-energy and safe lithium-ion batteries[J].Advanced Functional Materials,2010,20(3):485-491.
[5] Wang K X,Li X H,Chen J S.Surface and interface engineering of electrode materials for lithium-ion batteries[J].Advanced Materials,2015,27(3):527-545.
[6] Xiong X,Wang Z,Guo H,et al.Enhanced electrochemical properties of lithium-reactive V2O5 coated on the LiNi0.8Co0.1Mn0.1O2 cathode material for lithium-ion batteries at 60℃[J].Journal of Materials Chemistry A,2013,1:1284-1288.
[7] Liu W,Li X,Xiong D,et al.Significantly improving cycling performance of cathodes in lithium ion batteries:the effect of Al2O3 and LiAlO2 coatings on LiNi0.6Co0.2Mn0.2O2[J].Nano Energy,2017,44:111-120.
[8] Wang H Y,Tang A E,Huang K L,et al.Uniform AlF3 thin layer to improve rate capability of LiNi1/3Co1/3Mn1/3O2 material for Li-ion batteries[J].Transactions of Nonferrous Metals Society of China,2010,20(5):803-808.
[9] Wu F,Zhang X,Zhao T,et al.Multifunctional AlPO4 coating for improving electrochemical properties of low-cost Li[Li0.2Fe0.1Ni0.15Mn0.55]O2 cathode materials for lithium-ion batteries[J].ACS Applied materials & interfaces,2015,7(6):3773-3781.
[10] Feng Z,Sun D,Tang Y,et al.In-situ formation of hybrid Li3PO4-AlPO4-Al(PO3)3 coating layer on LiNi0.8Co0.1Mn0.1O2 cathode with enhanced electrochemical properties for lithium-ion battery[J].Chemical Engineering Journal,2020,382:122959-122968.
[11] Tang W J,Chen Z X,Xiong F,et al.An effective etching-induced coating strategy to shield LiNi0.8Co0.1Mn0.1O2 electrode materials by LiAlO2[J].Journal of Power Sources,2019,412:246-254.
[12] Meng K,Wang Z,Guo H,et al.Improving the cycling performance of LiNi0.8Co0.1Mn0.1O2 by surface coating with Li2TiO3[J].Electrochimica Acta,2016,211:822-831.
[13] Yuan W,Zhang H Z,Liu Q,et al.Surface modification of Li(Li0.17Ni0.2Co0.05Mn0.58)O2 with CeO2 as cathode material for Li-ion batteries[J].Electrochimica Acta,2014,135:199-207.
[14] Liu K,Yang G L,Dong Y,et al.Enhanced cycling stability and rate performance of Li[Ni0.5Co0.2Mn0.3]O2 by CeO2 coating at high cut-off voltage[J].Journal of Power Sources,2015,281:370-377.
[15] Song B H,Li W D,Yan P F,et al.A facile cathode design combining Ni-rich layered oxides with Li-rich layered oxides for lithium-ion batteries[J].Journal of Power Sources,2016,325:620-629.
[16] 夏青,赵俊豪,王凯,等.基于分级共沉淀法制备锂离子电池LiNi0.5Co0.2Mn0.3O2正极材料[J].化工学报,2017,68(3):1239-1246.
[17] Xiao B,Wang B,Liu J,et al.Highly stable Li1.2Mn0.54Co0.13Ni0.13O2 enabled by novel atomic layer deposited AlPO4 coating[J].Nano Energy,2017,34:120-130.
[18] Zhang Y,Liu W,Zhang S,et al.AlPO4-coated P2-type hexagonal Na0.7MnO2.05 as high stability cathode for sodium ion battery[J].Chemical Engineering Journal,2020,382:122697-122707.
[19] Kurilenko K A,Shlyakhtin O A,Petukhov D I,et al.Effect of CeO2,coprecipitation on the electrochemical performance of Li(Li,Ni,Mn,Co)O2-CeO2-C composite cathode materials[J].Journal of Power Sources,2017,354:189-199.
[20] Song J,Wang Y,Feng Z,et al.Investigation on the electrochemical properties and stabilized surface/interface of nano-AlPO4-coated Li1.15Ni0.17Co0.11Mn0.57O2 as the cathode for lithium-ion batteries[J].ACS Applied Materials & Interfaces,2018,10:27326-27332.
[21] Zhang X P,Yang Y,Sun S W,et al.Multifunctional ZrF4 nanocoating for improving lithium storage performances in layered Li[Li0.2Ni0.17Co0.07Mn0.56]O2[J].Solid State Ionics,2016,284:7-13.
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