| 快速共沉淀过程pH值对Ni_(0.8)Co_(0.1)Mn_(0.1)(OH)_2及LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2性能的影响 |
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| 引用本文： | 王接喜,李新海,王志兴,李灵均,郭华军,岳鹏,伍凌.快速共沉淀过程pH值对Ni_(0.8)Co_(0.1)Mn_(0.1)(OH)_2及LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2性能的影响[J].中国有色金属学报,2011(9). |
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| 作者姓名： | 王接喜 李新海 王志兴 李灵均 郭华军 岳鹏 伍凌 |
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| 作者单位： | 中南大学冶金科学与工程学院; |
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| 基金项目： | 国家重点基础研究发展计划资助项目(2007CB613607) |
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| 摘 要： | 采用快速共沉淀法制备Ni0.8Co0.1Mn0.1(OH)2前驱体,利用前驱体与LiOH.H2O的高温固相反应得到锂离子电池层状正极材料LiNi0.8Co0.1Mn0.1O2,探讨pH值对材料结构和电化学性能的影响。通过X射线衍射(XRD)、扫描电镜(SEM)和电化学测试对合成样品进行表征。结果表明,pH值为11.00~12.00时,合成的Ni0.8Co0.1Mn0.1(OH)2前驱体均无杂相;pH值为11.50时,合成的前驱体制备出的正极材料具有良好的电化学性能,0.1C倍率下首次放电比容量为192.4 mA.h/g;经过40次循环,容量保持率为91.56%。
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| 关 键 词： | 锂离子电池 正极材料 LiNi0.8Co0.1Mn0.1O2 共沉淀法 pH值 |
Effect of pH value on performance of Ni_(0.8)Co_(0.1)Mn_(0.1)(OH)_2 and LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2 synthesized via fast co-precipitation process |
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| WANG Jie-xi,LI Xin-hai,WANG Zhi-xing,LI Ling-jun,GUO Hua-jun,YUE Peng,WU Ling.Effect of pH value on performance of Ni_(0.8)Co_(0.1)Mn_(0.1)(OH)_2 and LiNi_(0.8)Co_(0.1)Mn_(0.1)O_2 synthesized via fast co-precipitation process[J].The Chinese Journal of Nonferrous Metals,2011(9). |
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| Authors: | WANG Jie-xi LI Xin-hai WANG Zhi-xing LI Ling-jun GUO Hua-jun YUE Peng WU Ling |
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| Affiliation: | WANG Jie-xi,LI Xin-hai,WANG Zhi-xing,LI Ling-jun,GUO Hua-jun,YUE Peng,WU Ling (School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | Ni0.8Co0.1Mn0.1(OH)2 precursors were synthesized by fast co-precipitation method and highly ordered layered LiNi0.8Co0.1Mn0.1O2 was prepared by heat-treatment of Ni0.8Co0.1Mn0.1(OH)2 precursors and LiOH-H2O.The effect of pH value on the structure and electrochemical properties of samples was studied.The prepared samples were characterized by X-ray powder diffractometry(XRD),scanning electron microscopy(SEM) and electrochemical tests.The results show that no impurities exist in the Ni0.8Co0.1Mn0.1(OH)2 synth... |
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| Keywords: | lithium ion battery cathode materials LiNi0 8Co0 1Mn0 1O2 co-precipitation pH value |
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