| 熔融盐法合成锂离子电池正极材料纳米LiNiO2 |
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| 引用本文： | 白莹,王蓓,张伟风. 熔融盐法合成锂离子电池正极材料纳米LiNiO2[J]. 物理学报, 2011, 60(6): 68202-068202 |
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| 作者姓名： | 白莹 王蓓 张伟风 |
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| 作者单位： | 河南省光伏材料重点实验室,河南大学物理与电子学院,开封 475004 |
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| 基金项目： | 国家自然科学基金(批准号:50902044,60976016)、河南省教育厅自然科学基金(批准号:2010B480004)和河南大学自然科学基金(批准号:2008YBZR018)资助的课题. |
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| 摘 要： | 采用熔融盐法,在较低的温度和较短的时间制备了符合理论化学计量比的纳米LiNiO2.研究表明,经过空气中的低温预烧,可以使制备的纯相纳米LiNiO2具有更加优良的结晶性能和更佳的电化学特性.添加预烧步骤前后所得最终产物的初始容量分别为151和148 mAh ·g-1,经过100周的循环,容量衰减到55和118 mAh ·g-1,容量保持率分别为36.4%和79.7%.原因在于预烧后再进行煅烧降低了阳离子无序度,减少了混杂关键词：2')" href="#">LiNiO2熔融盐法锂离子电池电化学性能
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| 关 键 词： | LiNiO2 熔融盐法 锂离子电池 电化学性能 |
| 收稿时间： | 2011-01-11 |
Nano-LiNiO2 as cathode material for lithium ion battery synthesized by molten salt method |
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| Bai Ying,Wang Bei,Zhang Wei-Feng. Nano-LiNiO2 as cathode material for lithium ion battery synthesized by molten salt method[J]. Acta Physica Sinica, 2011, 60(6): 68202-068202 |
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| Authors: | Bai Ying Wang Bei Zhang Wei-Feng |
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| Affiliation: | Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics & Electronics, Henan University, Kaifeng 475004, China;Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics & Electronics, Henan University, Kaifeng 475004, China;Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics & Electronics, Henan University, Kaifeng 475004, China |
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| Abstract: | Molten salt method is applied to synthesis stoichiometric nano-LiNiO2 in rather low temperature and short time. Our results indicate that in the process of preheating the better-crystallized LiNiO2 powder with better electrochemical performances can be produced. The final samples before and after preheating exhibit the initial discharge capacities of 151 and 148 mAh ·g-1 respectively. After 100 cycles, they decay to only 55 and 118 mAh ·g-1, with capacity retentions being 36.4% and 79.7% respectively. The lowered cation disordering is thought to be favorable for the diffusion of lithium ions, by which the enhanced electrochemial properties can be explained. |
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| Keywords: | LiNiO2 molten salt method lithium ion battery electrochemical performances |
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