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丙烯酸盐自聚合法共掺Co/F对改性正极材料LiNi0.5Mn1.5O4电化学性能的影响

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  • 广西工业职业技术学院石油与化学工程系,南宁530001
黄振德(1976-),男,硕士,讲师,主要研究方向为新能源锂离子电池材料。

收稿日期: 2019-10-29

  网络出版日期: 2022-11-01

基金资助

广西教育厅科研立项项目(200708LX315)

Influence of Co/F codoping on the electrochemical property of modified cathode materials LiNi0.5Mn1.5O4 by self-polymerization of acrylate

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  • Department of Petroleum and Chemical Engineering,Guangxi Industrial Vocational and Technical College,Nanning 530001

Received date: 2019-10-29

  Online published: 2022-11-01

摘要

采用丙烯酸盐自聚合法,确保原料主体各组分和微量Co/F掺杂物,按化学计量比均匀分布并保持结构稳定,实现Co/F共掺获得对锂离子电池LiNi0.5Mn1.5O4改性。经X射线衍射、扫描电镜、恒电流充放电循环和电化学循环伏安测试。结果表明:由Co/F共掺杂制备LiCo0.09Ni0.45Mn1.46O3.88F0.12,其在大倍率充放电下具有良好的循环稳定性。在3C充放电循环下,首次放电容量为122mAh/g,循环60次后容量保持率为93%,具有满足未来电动汽车快速充电技术的应用前景。

本文引用格式

黄振德 . 丙烯酸盐自聚合法共掺Co/F对改性正极材料LiNi0.5Mn1.5O4电化学性能的影响[J]. 化工新型材料, 2020 , 48(7) : 252 -255 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.057

Abstract

The modification of LiNi0.5Mn1.5O4 for lithium-ion batteries was achieved by Co/F codoping with acrylate self-polymerization method,which ensured that the main components of raw materials and trace Co/F dopant were evenly distributed according to stoichiometric ratio and maintained stable structure.Through XRD,SEM,constant current charge discharge cycle and electrochemical cyclic voltammetry test,the sample was characteried.The results shown that the sample material LiCo0.09Ni0.45Mn1.46O3.88F0.12 prepared by Co/F codoping had good cyclic stability at high charge-discharge rates.The first discharge capacity was 122mAh/g under 3C high rate charge-discharge cycle,and the capacity retention rate was 93% after 60 cycles,which can met the application prospect of fast charging technology for electric vehicles in the future.

参考文献

[1] Xu J,Dou S,Liu H,et al.Cathode materials for next generation lithium ion batteries[J].Nano Energy,2013,2(4):439-442.
[2] Riley L A,Lee S H,Gedvilias L,et al.Optimization of MoO3 nanoparticles as negative-electrode material in high-energy lithium ion batteries[J].Journal of Power Sources,2010,195(2):588-592.
[3] 解静,李世友,李春雷,等.高功率型镍锰酸锂正极材料的研究进展[J].化工新型材料,2018,46(7):254-257.
[4] Zhu Z,Yan H,Zhang D,et al.Preparation of 4.7V cathode material LiNi0.5Mn1.5O4 by an oxalic acid-pretreated Solid-state methode for lithium-ion secndary battery[J].Journal of Power Sources,2013,224:13-19.
[5] Jiao C,Meng T,Lu H,et al.Improvement of the electrochemical properties of a LiNi0.5Mn1.5O4 cathode material formed by a new solid-state synthesis methode[J].Journal of Solid State Electrochemistry,2017,21(2):495-501.
[6] 郅晓科,叶雪海,赵桢,等.LiNi0.5Mn1.5O4正极材料制备及其电化学性能研究[J].无机盐工业,2014,46(6):66-68.
[7] Li S,Yang Y,Xie M,et al.Synthesis and electrochemical performances of high-voltage LiNi0.5Mn1.5O4 cathode materials prepared by hydroxide co-precipitation method[J].Rare Metals,2017,36(4):277-283.
[8] Xiao Y,Zhu Y,Gao T,et al.LiNi0.5Mn1.5O4 hollow nano-micro hieratchical micro-spheres as advanced cathode for lithium-ion batteries[J].Ionics,2017,2:1-8.
[9] Jung H G,Jang M W,Hassoun J,et al.A high-rate longlife Li4Ti5O12/Li[Ni0.45Co0.1Mn1.45]O4 lithium-ion battery[J].Nat Commun,2011,2:516.
[10] Zhu Z,Lu Q,Zhang D,et al.Preparation of spherical hierarchical LiNi0.5Mn1.5O4 with high electrochemical performances by a novel composite co-precipitation method for 5V lithium-ion secondary batteries[J].Electrochimica Acta,2014,115(3):290-296.
[11] 贺周初,庄新娟,彭爱国.锂离子电池正极材料尖晶石型锰酸锂的研究进展[J].精细化工中间体,2010,40(1):7-11.
[12] Liu H,Jiang Y,Tan X,et al.Synthesis of well-crystallized,high-performance LiNi0.5Mn1.5O4 octahedra as lithium-ion battery electrode promoted by metal manganese powders[J].Energy Technology,2017(5):414-421.
[13] Sha O,Wang S L,Qiao Z,et al.Synthesis of spinel LiNi0.5Mn1.5O4 cathode material with excellent cycle stability using urea-based sol-gel method[J].Materials Letters,2012,89:251-253.
[14] Zhao E,Wei L,Guo Y,et al.Rapid hydrothermal and post calcination synthesis of well-shaped LiNi0.5Mn1.5O4 cathode materials for lithium-ion batteries[J].Journal of Alloys and Compounds,2017,695:3393-3401.
[15] Zhu X,Li X,Zhu Y,et al.Porous LiNi0.5Mn1.5O4 microspheres with different pore conditions:preparation and application as cathode materials for lithium-ion batteries[J].Journa of Power Sources,2014,261:93-100.
[16] Liu G Y,Kong X,Wang Q B,et al.Low-temperature solution combustion synthesis of high performance LiNi0.5Mn1.5O4[J].Ceramics International,2014,40(5):6447-6452.
[17] 聂翔,郭孝东,钟本和,等.锰源对燃烧法制备5V级正极材料LiNi0.5Mn1.5O4的影响[J].无机化学学报,2012,28(12):2573-2580.
[18] Yu R,Sun Y,Zou B Y,et al.LiNi0.5Mn1.5O4 based composite electrodes with improved properties prepared by a slurry spray deposition process[J].Journal of Power Sources,2017,340:258-262.
[19] Risthaus T,Wang J,Friesen A,et al.Synthesis of spinel LiNi0.5Mn1.5O4 with secondary plate morphology as cathode material for lithium-ion batteries[J].Journal of Power Sources,2015,293(2):137-142.
[20] Wang Z L,Dupre N,Lajaumie L,et al.Effect of glutaric anhydride additive on the LiNi0.5Mn1.5O4 electrode/electrolyte interface evolution:a MAS NMR and TEM/EELS study[J].Journal of Power Sources,2012,215(5):170-178.
[21] Mao J,Ma M,Liu P,et al.The effect of cobalt doping on the morphology and electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode material[J].Plos One,2016,8(14):9116.
[22] Ma Y,Wang L,Zuo X,et al.Co-precipitation spray-drying synthesis and electrochemical perfomance of stabilized LiNi0.5Mn1.5O4,Cahtod materials[J].Journal of Solid State Electrochemistry,2018,8:1-7.
[23] Li J,Li Q,Li S,et al.Preparation and properties of F-doped LiNi0.5Mn1.5O4 materials[J].Rare Metal Materials and Engineering,2017(2):439-444.
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