| 碳纳米管导电浆料的制备及其对LiNi0.8Co0.1Mn0.1O2 电化学性能的影响 |
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| 引用本文： | 田丰,聂薇,郭乾坤,吴理觉,梁卫春,付海阔,钟盛文.碳纳米管导电浆料的制备及其对LiNi0.8Co0.1Mn0.1O2 电化学性能的影响[J].有色金属科学与工程,2019,10(2):62-67. |
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| 作者姓名： | 田丰 聂薇 郭乾坤 吴理觉 梁卫春 付海阔 钟盛文 |
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| 作者单位： | 江西理工大学,材料科学与工程学院,江西 赣州 341000;江西理工大学江西省动力电池及其材料重点实验室,江西 赣州 341000;广东佳纳能源科技有限公司,广东 清远,513000 |
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| 基金项目： | 国家自然科学基金资助项目51874151广东省扬帆计划引进创新创业团队专项资金[2017]108 |
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| 摘 要： | 用CVD法制备碳纳米管，通过强酸超声处理后溶解在N-甲基吡咯烷酮(NMP)中制备成碳纳米管导电浆料，利用XRD，SEM，BET考察了制备的碳纳米管导电剂浆料的结构和表面形貌，并考察了其作为导电剂对LiNi0.8Co0.1Mn0.1O2锂离子电池电化学性能的影响；研究结果表明经过王水处理后的碳纳米管获得了更好的分散性，并且得到了更多的介孔。添加了碳纳米管导电浆料的电池首次放电比容量是186.1 mAh/g，而未添加碳纳米管导电浆料的电池首次放电比容量是181.2 mAh/g。添加了碳纳米管导电浆料的电池循环性能更好，100次循环容量保持率是95.95%；添加了碳纳米管导电浆料的电池大倍率性能优越，在2C、3C、5C倍率下要明显高于单独用SP做导电剂的电池(1 C=180mA/g)。并且，添加碳纳米管导电浆料的电池电极界面阻抗要小。
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| 关 键 词： | CVD 王水 碳纳米管 LiNi0.8Co0.1Mn0.1O2 导电剂 |
| 收稿时间： | 2018-12-02 |
Preparation of carbon nanotube conductive paste and its effect on electrochemical performance of LiNi0.8Co0.1Mn0.1O2 |
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| Affiliation: | 1a.School of Materials Science and Engineering, Ganzhou 341000, China1b.Jiangxi Key Laboratory of Power Battery and Materials, Jiangxi University of Science and Technology, Ganzhou 341000, China2.Guangdong jiana Energy Technology Co., Ltd., Qingyuan 513000, China |
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| Abstract: | Carbon nanotubes were prepared by CVD method, and dissolved in N-methylpyrrolidone (NMP) by ultrasonic treatment with strong acid to prepare conductive paste of carbon nanotubes. The structure and surface morphology of the prepared carbon nanotube conductive agent slurry were investigated by XRD, SEM and BET, And the effect of adding it as a conductive agent on the electrochemical performance of LiNi0.8Co0.1Mn0.1O2 lithium ion battery was investigated.The results show that the carbon nanotubes have better dispersibility and more mesopores after treatment with aqua regia. the battery adding carbon nanotube conductive paste shows good capacity performance, and its first discharge capacity is 186.1 mAh/g, while the battery using the common conductive agent first discharge capacity is 181.2 mAh/g, This shows good cycling performance, capacity retention rate was 95.95% after 100 cycles, carbon nanometer was added The battery of the conductive paste has superior large-rate performance, and is significantly higher at 2C, 3C, and 5C rates than the battery added the conductive of SP (1 C=180mA/g).Moreover, the cell electrode interface impedance of the carbon nanotube conductive paste was added is small. |
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