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材料工程  2018, Vol. 46 Issue (1): 106-113    DOI: 10.11868/j.issn.1001-4381.2016.001099
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
锂离子电池正极材料铁掺杂V6O13的制备及电化学性能
袁琦, 邹正光, 万振东, 韩世昌
桂林理工大学 材料科学与工程学院 有色金属及材料加工新技术教育部重点实验室, 广西 桂林 541004
Synthesis and Electrochemical Properties of Fe-doped V6O13 as Cathode Material for Lithium-ion Battery
YUAN Qi, ZOU Zheng-guang, WAN Zhen-dong, HAN Shi-chang
Key Laboratory of Non-ferrous Materials and New-Processing Technology(Ministry of Education), College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China
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摘要 为有效提高V6O13正极材料在高锂状态下的放电比容量和改善循环性能,使用一种先制备前驱体再水热合成的方法制备铁掺杂V6O13。运用XRD,SEM和XPS表征铁掺杂V6O13的物相、形貌以及表面元素价态,并对铁掺杂V6O13的电化学性能进行研究与分析。掺杂不同数量的铁可以得到不同形貌且电化学性能各异的铁掺杂V6O13。其中0.02样品的有序堆垛纳米片的厚度最大(600~900nm),纳米片之间的空隙最大。铁掺杂V6O13样品的放电性能均好于纯V6O13,其中0.02样品的电化学性能最好,首次放电比容量为433mAh·g-1,100次循环后的容量保存率为47.1%。
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袁琦
邹正光
万振东
韩世昌
关键词 锂离子电池V6O13铁掺杂电化学性能    
Abstract:Fe-doped V6O13 was synthesized via a facile hydrothermal method after preparing precursor in order to improve the discharge capacity and cycle performance of V6O13 cathode material at high-lithium state. XRD, SEM and XPS were employed to characterize the phase, morphology and valence of the Fe-doped V6O13. Meanwhile, the electrochemical performance was analyzed and researched. Different morphologies and electrochemical performances of Fe-doped V6O13 were obtained via doping different contents of Fe3+ ion. The sample 0.02 presented the largest thickness of nanosheets (the thickness of 600-900nm) and clearance between layers. The Fe-doped V6O13 has a better electrochemical performance than that of pure V6O13. The sample 0.02 exhibits the best electrochemical performance, the initial discharge specific capacity is 433mAh·g-1 and the capacity retention is 47.1% after 100 cycles.
Key wordslithium-ion battery    V6O13    Fe-doped    electrochemical property
收稿日期: 2016-09-12      出版日期: 2018-01-18
中图分类号:  TM911  
通讯作者: 邹正光(1962-),男,教授,博士生导师,研究方向为锂离子电池正极材料,联系地址:广西壮族自治区桂林市建干路12号桂林理工大学材料科学与工程学院(541004),E-mail:zouzgglut@163.com     E-mail: zouzgglut@163.com
引用本文:   
袁琦, 邹正光, 万振东, 韩世昌. 锂离子电池正极材料铁掺杂V6O13的制备及电化学性能[J]. 材料工程, 2018, 46(1): 106-113.
YUAN Qi, ZOU Zheng-guang, WAN Zhen-dong, HAN Shi-chang. Synthesis and Electrochemical Properties of Fe-doped V6O13 as Cathode Material for Lithium-ion Battery. Journal of Materials Engineering, 2018, 46(1): 106-113.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.001099      或      http://jme.biam.ac.cn/CN/Y2018/V46/I1/106
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