化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (8) : 145-149. DOI: 10.19817/j.cnki.issn 1006-3536.2021.08.030

科学研究

Li_4-xCu_xTi₅O₁₂电池材料的制备及电化学性能研究

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^1,2,3

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Li_4-xCu_xTi₅O₁₂ battery material and its electrochemical performance

Zhuang Xiaodong¹, Li Rongxing², He Xiaocai¹, Xu Qingxin¹, Xie Gang^1,2,3

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Received		Published
2020-05-12		2021-08-20
Issue Date	Revised Date
2021-09-07	2020-05-12

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摘要

为改善Ti₄Ti₅O₁₂的电化学性能,对Li₄Ti₅O₁₂进行Cu²⁺的Li位掺杂改性处理,制备出了Li_4-xCu_xTi₅O₁₂复合材料,对材料进行了X射线衍射(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)表征;将材料制成电极并组装成扣式电池,采用蓝电电池测试系统和电化学工作站对材料的电化学性能进行测试。结果表明:对Li₄Ti₅O₁₂进行Cu²⁺的Li位掺杂可影响Li₄Ti₅O₁₂的晶型结构,降低颗粒大小,可明显提高Li₄Ti₅O₁₂的电化学性能。Li_3.8Cu_0.2Ti₅O₁₂在0.2C倍率下的首次放电比容量为173.30mA/g,100次充放电的循环持率为96.64%,表现出了优异的充放电循环性能。

Abstract

In order to improve the electrochemical performance of Li₄Ti₅O₁₂,Li₄Ti₅O₁₂ was modified by Cu²⁺ doping in Li position,and Li_4-xCu_xTi₅O₁₂ composite was prepared.The materials were characterized by XRD,SEM and EDS.The material was made into electrode and assembled into button cell.The electrochemical performance of the material was tested by blue cell test system and electrochemical workstation.The results shown that doping Li₄Ti₅O₁₂ with Cu²⁺ in Li position can affect the crystal structure of Li₄Ti₅O₁₂,reduced the particle size,and improved the electrochemical performance of Li₄Ti₅O₁₂.The first discharge specific capacity of Li_3.8Cu_0.2Ti₅O₁₂ at 0.2C was 173.30mA/g,and the cycle holding rate of 100 times charge discharge was 96.64%,which shown excellent charge discharge cycle performance.

关键词

钛酸铜锂 / 首次充放电 / 倍率循环 / 电化学 / 锂离子扩散系数

Key words

Li_4-xCu_xTi₅O₁₂ / first charge and discharge / rate cycle / electrochemistry / lithium ion diffusion coefficient

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Li_4-xCu_xTi₅O₁₂电池材料的制备及电化学性能研究[J]. 化工新型材料, 2021, 49(8): 145-149 DOI:10.19817/j.cnki.issn 1006-3536.2021.08.030

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] 庄晓东.固相法制备钛酸锂电池材料及改性研究[D].昆明:昆明理工大学,2019.
[2] 庄晓东,李荣兴,俞小花,等.固相法制备钛酸锂电极材料[J].材料导报,2019,6(16):2654-2659.
[3] 侯春平.金属掺杂磷酸锰锂/碳纳米复合正极材料的制备与性能研究[D].西安:西北工业大学,2018.
[4] 张莉莉,陈静娟,项宏发.不同铝源Al₂O₃包覆Li_1.15Ni_0.17Co_0.11Mn_0.57O₂.电化学性能研究[J].电源技术,2016,40(11):2115-2117.
[5] 蔡克迪,浪笑石,王广进.化学电源技术[M].北京:化学工业出版社,2016,13-23.
[6] 王伟东,仇卫华,丁倩倩.锂离子电池三元材料—工艺技术及生产应用[M].北京:化学工业出版社,2015,1-5.
[7] Kung Y F,Jia C J,Gent W E,et al.Car-parrinello molecular dynamics study of the charge-discharge cycle in lithium-ion battery materials[J].Aps Meeting,2017,62:112-118.
[8] Wurm C,Oettinger O,Wittkaemper S.Anode materials for lithium-ion batteries[M].Oxford:Oxford University Press,2018,20-30.
[9] Zheng H,Wang T,Zhao R,et al.LiMn₂O₄ microspheres as high-performance cathode materials for Li-ion batteries[J].Iop Conference Series:Earth & Environmental Science,2018,108(2):11-22.
[10] Gao P,Jiang Y,Zhu Y,et al.Improved cycle performance of nitrogen and phosphorus co-doped carbon coatings on lithium nickel cobalt aluminum oxide battery material[J].Journal of Materials Science,2018,53(13):1-12.
[11] Feng K,Li M,Liu W,et al.Silicon-based anodes for lithium-ion batteries:from fundamentals to practical applications[J].Small,2018,14(8):2737-2739.
[12] Vikram Babu B,Vijaya Babu K,Tewodros Aregai G,et al.Structural and electrical properties of Li₄Ti₅O₁₂ anode material for Lithium-ion batteries[J].Results in Physics,2018,9:284-289.
[13] Ruan Y L,Cheng B W.Study on the synthesis of lithium titanate compound as anode material for lithium ion battery[J].Applied Mechanics & Materials,2011,44(47):2172-2175.
[14] Zukalová M,Fabián M,Klusáčková M,et al.Li insertion into Li₄Ti₅O₁₂ spinel prepared by low temperature solid state route[J].Electrochimica Acta,2018,265:480-487.
[15] 肖启振,吴丽君,李晶,等.钛酸铜锂纳米粒子的制备及其电化学性能研究[J].湘潭大学自然科学学报,2013,35(2):41-45.
[16] 刘瑞龙,徐卡秋,曾珍,等.溶胶-凝胶法制备负极材料铜掺杂钛酸锂[J].电池,2016,46(6):314-316.
[17] Wang L,Wang F,Zhu J,et al.Synthesis and electrochemical performance of three-dimensional ordered hierarchically porous Li₄Ti₅O₁₂ for high performance lithium ion Batteries[J].Ceramics International,2018(44):1296-1303.
[18] Huang Shahua,Wen Zhaoyin,Lin Bin,et al.The high-rate performance of the newly designed Li₄Ti₅O₁₂/Cu composite anode for lithium ion batteries[J].Journal of Alloys & Compounds,457(1-2):0-403.
[19] Vikram Babu B,Vijaya Babu K,Tewodros Aregai G,et al.Structural and electrical properties of Li₄Ti₅O₁₂,anode material for lithium-ion batteries[J].Results in Physics,2018,9:284-289.
[20] Syahrial A Z,Aldy F,Priyono B,et al.Enchanced electrochemical performances of Li₄Ti₅O₁₂/Sn composites anode via sol-hydrothermal method for lithium ion batteries[J].IOP Conference Series:Earth and Environmental Science,2018,105(1):1315-1320.
[21] 孔祥伟,张荣良,石少楠,等.新型锂离子电池复合负极材料3Li₄Ti₅O₁₂·NiO的制备及性能研究[J].人工晶体学报,2015,44(9):2536-2540.
[22] 张利辉,徐宇兴,刘振法,等.钛酸锂/石墨烯复合负极材料的制备及电化学性能[J].化工进展,2019,38(2):245-251.
[23] Sun B,Wang R,Ni L,et al.Enhanced electrochemical properties of Li₄Ti₅O₁₂ with novel porous structure[J].Inorganic Chemistry Communications,2018,93:10-14.
[24] Zhang S,Ge X,Chen C.Synthesis of carbon-coated Li₄Ti₅O₁₂ and its electrochemical performance as anode material for lithium-ion battery[J].Chinese Chemical Letters (English Edition),2017,28(12):136-140.
[25] 王丹,黄昭,吴晓燕,等.离子掺杂对Li₄Ti₅O₁₂负极材料电化学性能的影响[J].电源技术,2015,39(9):1826-1827.
[26] 庄晓东,李荣兴,俞小花,等.钛酸锂/石墨烯复合材料及电化学性能[J].化工进展,2019,38(10):4659-4665.