| 负极材料Li4Ti4.75Cu0.25O12/SnO2的合成及电化学性能研究 |
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| 引用本文： | 廉今兰,金星,陶春然.负极材料Li4Ti4.75Cu0.25O12/SnO2的合成及电化学性能研究[J].科学技术与工程,2015,15(33). |
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| 作者姓名： | 廉今兰 金星 陶春然 |
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| 作者单位： | 吉林化工学院,吉林化工学院化学与制药工程学院,吉林化工学院化学与制药工程学院 |
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| 基金项目： | 吉林省科技厅科技发展(201207213) |
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| 摘 要： | 采用溶胶-凝胶法和化学沉积法制备了Li4Ti4.75Cu0.25O12/SnO2复合活性材料。通过X射线衍射(XRD)、扫描电镜(SEM)、恒流充放电测试对材料进行结构、形貌表征及电化学性能测试。结果表明:Li4Ti4.75Cu0.25O12/SnO2复合活性物质能够进一步改善倍率性能的同时,循环性能也得到了很好的保证。当电压在1~3 V时,电流密度为1C倍率条件下,Li4Ti4.75Cu0.25O12/SnO2复合材料首次放电比容量高达202.55 m A·h/g。经过50次循环后,容量仍保持在202.51 m A·h/g,容量保持率高达99.98%。
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| 关 键 词： | 锂离子电池 负极材料 Li4Ti4.75Cu0.25O12/SnO2 电化学性能 |
| 收稿时间： | 8/5/2015 12:00:00 AM |
| 修稿时间： | 8/5/2015 12:00:00 AM |
Study on the synthesis and electrochemical properties of Li4Ti4.75Cu0.25O12/SnO2as anode meterial |
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| Lian Jin-lan,jinxing and Tao Chun-ran.Study on the synthesis and electrochemical properties of Li4Ti4.75Cu0.25O12/SnO2as anode meterial[J].Science Technology and Engineering,2015,15(33). |
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| Authors: | Lian Jin-lan jinxing and Tao Chun-ran |
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| Abstract: | A series of Li4Ti4.75Cu0.25O12/SnO2 composite materials were prepared by Sol-Gel and chemical deposition method. Material structure, morphology and electrochemical performance were characterization by XRD, SEM and Constant current charge-discharge test. The results showed that the Li4Ti4.75Cu0.25O12/SnO2 composite material can improve the rate capability , as wel the cycle performance got guarantee in the meantimel. Under a potential of 1-3V, the initial specific discharge capacity was 202.55mAh/g at 1C, and 202.51mAh/g about over 50 cycles, only 0.02% of capacity loss occurs to the composite active materials. |
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| Keywords: | Lithium ion batteries Anode material Li4Ti4 75Cu0 25O12/SnO2 electrochemical performance |
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