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LiNi0.64Co0.16Mn0.2O2电极材料的合成

时间:2021-12-31 10:39来源:毕业论文
综述了Li-Mn-Co-Ni三元复合正极材料的研究进展,这种材料具有比容量高、成本相对低廉、热稳定性好、安全性高等优点,成为近年来研究较多的电池正极材料,本文以NiCl2•6H2O、CoCl2•
Synthesis of L iNi0。64 Co0。16Mn0。2O2 electrode materials  摘要本文综述了Li-Mn-Co-Ni三元复合正极材料研究进展,这种材料具有比容量高、成本相对低廉、热稳定性好、安全性高等优点,成为近年来研究较多的电池正极材料,本文以NiCl2•6H2O、CoCl2•6H2O、MnCl2•4H2O和Li2CO3为主要原料,探讨了空气、氮气、氩气三种不同气体氛围;共沉淀法、溶胶凝胶法、高温固相法三种不同制备方法,以丁二酸为碳源,含碳量分别为0%、5%、10%等因素对合成目标产物(LiNi0。64Co0。16Mn0。2O2)的影响,合成了7个样品。发现采用共沉淀法在氩气氛中制备的样品可以进行初次充电。溶胶凝胶法制备样品电化学性能较好,比容量可达187mAh·g-1,而高温固相法制备的样品颗粒较大,涂布不均。76538

毕业论文关键词:电极材料;三元复合正极材料; 合成方法; 电化学性能

Abstract This review summarizes the research progresses of Li-Mn-Co-Ni ternary composite cathode material。 This material is owns high specific capacity, relatively low cost, good thermal stability, safety and other advantages, which make it become a highly attractive point in the research of cathode material of battery。 This article concentrates on the material mainly made by NiCl2•6H2O、CoCl2•6H2O、MnCl2•4H2O and l Li2CO3。 In addition, this research investigated the influence to target product (LiNi0。64Co0。16Mn0。2O2 electrode material) ,which is caused by several factors, including the atmosphere in air, nitrogen, argon, the preparation method under coprecipitation method, sol-gel method, high temperature solid state method, and carbon content of 0%、5%、10% which used succinic acid as carbon source。 In the experiment part, we totally synthesized seven samples。 The research also indicated that the sample made in argon under coprecipitation method have a charging ability  circulation。 In contrast to these there preparation method, the sample using sol-gel method had a better electrochemical performance, and the highest specific capacity can reach 187mAh·g-1,while the sample particles using high temperature solid state method had a larger size, which lead to a poor electrochemical performance。

Keyword:  electrode material;ternary composite cathode material; synthetic method; electrochemical performance

目    录

1 引言 4

2 锂电子电池正极材料研究现状 4

2。1  LiCoO2正极材料 4

2。2 LiNiO2正极材料 5

2。3 LiMnO2正极材料 5

2。4 LiFePO4正极材料 5

2。5 LiNixCoyMn1-x-yO2三元复合正极材料 5

3 LiNixCoyMn1-x-yO2三元复合正极材料的研究进展 5

3。1 LiNixCoyMn1-x-yO2三元复合正极材料的合成方法 5

3。1。1 溶胶-凝胶法 5

3。1。2 共沉淀法 6

3。1。3 高温固相法 6

3。1。4 水合热法 6

3。1。5 喷雾干燥法 6

3。2 LiNixCoyMn1-x-yO2三元复合材料的应用 6

3。3 LiNixCoyMn1-x-yO2三元复合材料前景展望 7

4 LiNi0。64Co0。16Mn0。2O2的合成与表征 7

4。1 仪器与设备 LiNi0.64Co0.16Mn0.2O2电极材料的合成:http://www.youerw.com/cailiao/lunwen_87809.html

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