| 锂离子电池正极材料LiNi0.5Co0.4Al0.1O2的合成与性能 |
| Synthesis and Performance of LiNi0.5Co0.4Al0.1O2 Composite Material for Lithium Ion Batteries |
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| 摘要: 采用高温固相法制备了锂离子电池正极材料LiNi0.5Co0.4Al0.1O2。采用X射线衍射(XRD)、傅里叶红外光谱(FTIR)、扫描电子显微镜(SEM)对材料的结构及表观形貌进行分析。通过恒电流充放电以及循环伏安法进行了电化学性能测试。测试结果表明,充放电电压在3~4.5 V之间,在0.2C倍率下首次放电比容量达到159.9 mAh·g-1,经50次循环充放电后放电容量为142.6 mAh·g-1,表现出良好的电化学性能。 |
| 关键词: 高温固相法 锂离子电池 正极材料 电化学性能 |
| 基金项目: 国家自然科学基金(No.21061015)资助项目。 |
| Abstract: LiNi0.5Co0.4Al0.1O2 compositions were synthesized by high temperature solid-state method. The crystal structures and surface morphology of LiNi0.5Co0.4Al0.1O2 powders were characterized by X-ray diffractometry(XRD), fourier transform infrared spectrometer(FTIR) and scanning electron microscopy(SEM). The electrochemical properties of LiNi0.5Co0.4Al0.1O2 were examined by charge-discharge tests and cyclic voltammetry. The results showed that thematerial delivered the initial discharge capacity of 159.9 mAh·g-1 with the voltage range 3~4.5 V and 0.2C rate, and it retained 142.6 mAh·g-1 discharge capacity after 50 cycles. |
| Keywords: high temperature solid-state method lithium ion batteries composite material electrochemical properties |
| 投稿时间：2015-05-25 修订日期：2015-07-20 |
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| 张钰,粟智,潘会.锂离子电池正极材料LiNi0.5Co0.4Al0.1O2的合成与性能[J].无机化学学报,2015,31(9):1827-1830. |
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