崔永福,崔金龙,满建宗,程付鹏,张鹏超,李 嵩,文钟晟,孙俊才.CSTR系统制备高性能Ni0.6Co0.2Mn0.2(OH)2及电化学性能研究[J].稀有金属材料与工程,2019,48(2):587~593.[Cui Yongfu,Cui Jinlong,Man Jianzong,Cheng Fupeng,Zhang Pengchao,Li Song,Wen Zhongsheng,Sun Juncai.Synthesization and electrochemical properties of Ni0.6Co0.2Mn0.2(OH)2 ternary cathodes for lithium batteries in the system of CSTR[J].Rare Metal Materials and Engineering,2019,48(2):587~593.]
CSTR系统制备高性能Ni0.6Co0.2Mn0.2(OH)2及电化学性能研究
投稿时间:2017-07-08  修订日期:2017-10-27
中文关键词:  锂离子电池  正极材料  CSTR  共沉淀法
基金项目:国家自然科学基金资助(51479019,21476035);中央高校基本科研业务费(3132016341)
中文摘要:
      采用共沉淀法在CSTR(连续搅拌反应器系统)工艺体系中批量合成出镍钴锰三元氢氧化物前驱体Ni0.6Co0.2Mn0.2(OH)2 (622),掺入适量的Li2CO3高温焙烧后得到锂离子二次电池正极材料Li[Ni0.6Co0.2Mn0.2]O2。使用扫描电子显微镜(SEM)观察样品形貌,X射线衍射仪(XRD)及透射电子显微镜(TEM)分析合成样品的具体结构,充放电循环测试系统测试其电化学性能。SEM测试表明产物为二次粒子团聚而成类球形颗粒;XRD及TEM结果表明合成的样品具有典型的层状α-NaFeO2结构。在电压范围为2.8 V-4.3 V,0.2 C倍率条件下,首次充放电容量分别为206 mAh g-1 和176 mAh g-1,100次循环后容量保持率达到85%。
Synthesization and electrochemical properties of Ni0.6Co0.2Mn0.2(OH)2 ternary cathodes for lithium batteries in the system of CSTR
英文关键词:Lithium-ion battery  cathode material  electrochemical performace  co-precipitation
英文摘要:
      Ni0.6Co0.2Mn0.2(OH)2 as precursor of lithium-ion batteries ternary cathode material was prepared for batch preparation by a hydroxyl co-precipitation method in the system of CSTR (continuous stirred tank reactor). Then, the Ni0.6Co0.2Mn0.2(OH)2 was roasted with Li2CO3 to receive Li[Ni0.6Co0.2Mn0.2]O2 under high temperature in the air. Scanning electron microscope (SEM), X-ray diffraction (XRD) and Transmission electron microscope (TEM) were used to examine the morphology and structure of the obtained Li[Ni0.6Co0.2Mn0.2]O2. The resulting Li[Ni0.6Co0.2Mn0.2]O2 powders have a type of spherical structure composed of secondary particles with a typical α-NaFeO2 lamellar structure. The electrochemical tests indicate that this cathode material have a good electrochemical reversibility and much better cycling stability in the voltage range of 2.8 and 4.3 V. Its initial charge and discharge specific capacity are as high as 206 mAh g-1 and 176 mAh g-1 at 0.2 C, with a capacity retention rate of 85% after 100 cycles.
作者单位E-mail
崔永福 大连海事大学 交通运输工程学院 65058207@qq.com 
崔金龙 大连海事大学 交通运输工程学院  
满建宗 大连海事大学 交通运输工程学院  
程付鹏 大连海事大学 交通运输工程学院  
张鹏超 大连海事大学 交通运输工程学院  
李 嵩 大连海事大学 交通运输工程学院  
文钟晟 大连海事大学 交通运输工程学院  
孙俊才 大连海事大学 交通运输工程学院 sunjc@dlmu.edu.cn 
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