| 锂离子电池Li_4Ti_(4.95)Zr_(0.05)O_(12)负极材料的结构与电化学性能 |
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| 引用本文： | 鲍自力,朱彦荣,郝国栋,周安娜.锂离子电池Li_4Ti_(4.95)Zr_(0.05)O_(12)负极材料的结构与电化学性能[J].有色金属工程,2015,5(6). |
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| 作者姓名： | 鲍自力 朱彦荣 郝国栋 周安娜 |
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| 作者单位： | 中铁时代建筑设计院有限公司, 芜湖,安徽工业大学 化学与化工学院, 马鞍山,牡丹江师范学院 化学与化工学院, 牡丹江,安徽工业大学 化学与化工学院, 马鞍山 |
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| 基金项目： | 牡丹江市科技攻关项目(G2012g0008)；黑龙江省教育厅科技项目(11521575)；国家自然科学(51404002) |
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| 摘 要： | 采用高温固相法合成Li_4Ti_5O_(12)及Li_4Ti_(4.95)Zr_(0.05)O_(12)材料,采用扫描电镜(SEM)、X射线粉末衍射(XRD)、充放电测试和循环伏安(CV)研究材料的结构和电化学性能。结果表明,两种材料均具有较小的平均粒径和窄的粒度分布,Zr4+进入晶格结构内部,具有纯相的尖晶石结构。0.1C倍率时,Li_4Ti_(4.95)Zr_(0.05)O_(12)首次放电比容量高达248 m A·h/g,略低于Li_4Ti_5O_(12)。1.0C倍率放电比容量为145 m A·h/g,5.0C倍率140次循环后,放电比容量仍达到121 m A·h/g,明显高于纯相Li_4Ti_5O_(12)材料,具有较好倍率性能。
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| 关 键 词： | 锂离子电池 负极材料 Li_4Ti_(4.95)Zr_(0.05)O_(12) 倍率性能 |
| 收稿时间： | 4/1/2015 12:00:00 AM |
| 修稿时间： | 2015/4/21 0:00:00 |
Structure and electrochemical performance of Li4Ti4.95Zr0.05O12 anode materials for lithium-ion battery |
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| Bao Zili,Zhu Yanrong,Hao Guodong and Zhou Anna.Structure and electrochemical performance of Li4Ti4.95Zr0.05O12 anode materials for lithium-ion battery[J].Nonferrous Metals Engineering,2015,5(6). |
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| Authors: | Bao Zili Zhu Yanrong Hao Guodong and Zhou Anna |
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| Affiliation: | China Railway Shi Dai Architectural Design Institute Co, LTD,School of Chemistry and Chemical Engineering,Anhui University of Technology,Mudanjiang Normal University,School of Chemistry and Chemical Engineering,Anhui University of Technology |
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| Abstract: | Li4Ti4.95Zr0.05O12 materials were prepared by a solid-state reaction method, and the structure and electrochemical properties were investigated by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), charge-discharge tests, and cyclic voltammetry (CV), respectively. The result indicates that Li4Ti4.95Zr0.05O12shows small particle size and narrow particle size distribution. Zr ions enter into the lattice structure, and form a pure phase spinel structure. The initial discharge capacity of Li4Ti4.95Zr0.05O12reaches 248 mAh.g-1 at 0.1C rate, and the discharge capacity is 145 mAh.g-1 at 1C rate. After 140 cycles, the discharge capacity of Li4Ti4.95Zr0.05O12also reaches 121 mAh.g-1, and exhibits good rate performance. |
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| Keywords: | lithium ion battery anode material Li4Ti4 95Zr0 05O12 rate performance |
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