| 引用本文: | 左文婧,屈银虎,时晶晶,刘晓妮,何炫,张学硕,韩呈祥.基于3D打印技术的锂离子电池正极墨水的制备与性能研究[J].材料科学与工艺,2019,27(4):57-63.DOI:10.11951/j.issn.1005-0299.20180301. |
| ZUO Wenjing,QU Yinhu,SHI Jingjing,LIU Xiaoni,HE Xuan,ZHANG Xueshuo,HAN Chengxiang.Preparation and properties of lithium ion battery anode ink based on 3D printing technology[J].Materials Science and Technology,2019,27(4):57-63.DOI:10.11951/j.issn.1005-0299.20180301. |
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| 摘要: |
| 三元镍钴锰酸锂材料(LiNi0.5Co0.2Mn0.3O2)因其优异的能量密度，较大的理论容量，被视为最具潜力的锂离子电池正极材料，本文旨在制备出适用于3D打印技术的性能优良的锂离子正极墨水.利用扫描电子显微镜(SEM)、四探针测试仪、ANSYS R15.0软件模拟分析等，探究了石墨混合、增稠剂含量、三元材料固含量、烧结温度、挤压压力等因素对3D打印锂离子正极电极性能及电极墨水流动特性的影响.结果表明：当添加质量分数为15%的石墨后，三元材料电极的电阻率为18.33 kΩ·cm，比未添加时降低65%，电极导电性能提升；当烧结温度为400 ℃时，三元材料平整致密，电极导电性能优良；三元镍钴锰酸锂材料固含量为52%、增稠剂含量为4%时，正极墨水粘度适中，挤压压力为0.5 MPa时打印出的细棒状电极表面光滑平整，成形性优良. |
| 关键词: 三元材料 电池正极 打印墨水 烧结温度 |
| DOI：10.11951/j.issn.1005-0299.20180301 |
| 分类号:TM504 |
| 文献标识码:A |
| 基金项目:陕西省科学技术研究发展计划-工业攻关资助项目(2013K09-33)；陕西省重点研发计划项目(S2018-JC-YB-1093)；西安市科技计划项目-高校院所人才服务企业工程(2017074CG/RC037(XAGC002))；西安市科技计划项目-高校院所人才服务企业工程(2017074CG/RC037(XAGC007))；陕西省教育厅服务地方专项计划项目(14JF007). |
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| Preparation and properties of lithium ion battery anode ink based on 3D printing technology |
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ZUO Wenjing, QU Yinhu, SHI Jingjing, LIU Xiaoni, HE Xuan, ZHANG Xueshuo, HAN Chengxiang
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(School of Materials Science & Engineering, Xi′an Polytechnic University, Xi′an 710048, China)
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| Abstract: |
| The ternary lithium nickel-cobalt-manganese oxide material (LiNi0.5Co0.2Mn0.3O2) is regarded as the most promising anode material for lithium-ion batteries due to its excellent energy density and large theoretical capacity. This paper aims to prepare high-performance lithium ion battery anode ink for 3D printing technology. Anode ink were investigated by scanning electron microscopy (SEM), four-probe tester, and ANSYS R15.0 software simulation. The effects of graphite, thickener content, solid content of ternary materials, sintering temperature, and extrusion pressure on the performance of 3D printed anode and anode ink flow characteristics were investigated. Results show that after doping graphite with mass fraction of 15%, the resistivity of the ternary material electrode was 18.33 kΩ·cm, which was 65% lower than that without graphite, and the conductivity of the anode was improved. When the sintering temperature was 400 ℃, the ternary material was flat and dense, and the electrode had excellent electrical performance. When the content of ternary lithium nickel-cobalt-manganese oxide material was 52% and the thickener content was 4%, the viscosity of the anode ink was moderate. When the extrusion pressure was 0.5 MPa, the surface of the thin rod electrode printed was smooth and flat, and the formability was excellent. |
| Key words: ternary material anode printing ink sintering temperature |
