| 金属离子浓度对LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2材料结构及电化学性能影响研究 |
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| 引用本文： | 王兴蔚,贠天娥,惠国栋,张勇,侯春平.金属离子浓度对LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2材料结构及电化学性能影响研究[J].广州化工,2014(18):85-87. |
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| 作者姓名： | 王兴蔚 贠天娥 惠国栋 张勇 侯春平 |
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| 作者单位： | 宁夏共享新能源材料有限公司,宁夏 银川,750021 |
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| 摘 要： | 采用液相共沉淀+高温煅烧法制备正极材料LiNi0.5Co0.2Mn0.3O2,利用XRD、SEM及恒电流充放电等等分析手段,研究不同金属离子浓度合成镍钴锰酸锂前驱体对最终产品晶体结构、形貌及其电化学性能的影响。结果表明:金属离子浓度为2.0 mol/L时,所制备材料晶型层状结构发育完整,粒径分布均匀,球形度高且表面光滑,材料首次放电比容量达172.5 mAh/g,首次库伦效率为90.84%。
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| 关 键 词： | 正极材料 LiNi.Co.Mn.O 离子浓度 电化学性能 |
The Effect of Metal Ion Concentration on the Structure and Electrochemical Performance of LiNi0.5 Co0.2 Mn0.3 O2 |
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| WANG Xing-wei,YUN Tian-e,HUI Guo-dong,ZHANG Yong,HOU Chun-ping.The Effect of Metal Ion Concentration on the Structure and Electrochemical Performance of LiNi0.5 Co0.2 Mn0.3 O2[J].GuangZhou Chemical Industry and Technology,2014(18):85-87. |
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| Authors: | WANG Xing-wei YUN Tian-e HUI Guo-dong ZHANG Yong HOU Chun-ping |
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| Affiliation: | WANG Xing-wei;YUN Tian-e;HUI Guo-dong;ZHANG-Yong;HOU Chun-ping;Kocel New Energy Material Limited; |
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| Abstract: | LiNi0.5Co0.2Mn0.3O2 cathode materials were prepared by liquid phase co -precipitation and high -temperature calcination.The effects of different metal ion concentrations on the crystal structure , morphology and electrochemical performance of the final product were studied by XRD , SEM and galvanostatic charge -discharge methods.The results showed that the morphology of the materials presented sphere appearance.The layered crystal structure grew sufficiently.The first discharge capacity reached 172.5 mAh/g, and the first coulomb efficiency was up to 90.84%when the total concentration of metal ion was 2.0 mol/L. |
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| Keywords: | cathode material LiNi0 5 Co0 2 Mn0 3 O2 ion concentration electrochemical performance |
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