| 湿浸渍法合成LiMnBO3/C复合材料及其电化学性能改善 |
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| 引用本文： | 唐安平,何则强,徐国荣,彭荣华,宋海申.湿浸渍法合成LiMnBO3/C复合材料及其电化学性能改善[J].稀有金属材料与工程,2017,46(1):78-82. |
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| 作者姓名： | 唐安平 何则强 徐国荣 彭荣华 宋海申 |
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| 作者单位： | 湖南科技大学化学化工学院,吉首大学,湖南科技大学化学化工学院,湖南科技大学化学化工学院,湖南科技大学化学化工学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 以三维网络结构的科琴黑(KB)为模板和导电骨架，采用湿浸渍法合成了六方结构的LiMnBO3/C复合材料。用X-射线衍射、扫描电镜和氮吸附等测试技术分别对样品的微观结构、形貌和比表面积进行了表征。用恒流充放电和循环伏安对复合材料的电化学性能进行了表征。当LiMnBO3/C复合材料以C/20倍率进行锂离子脱嵌性能测试时，30周循环后放电容量保持率为87.4%，表现出优良的循环稳定性。当电流从C/20、C/10增至C/5时，复合材料的首次放电比容量依次为138.8、124.5和100.5mA h g-1，表明复合材料具有良好的倍率性能。
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| 关 键 词： | LiMnBO3 锂离子电池 正极 |
| 收稿时间： | 2014/10/6 0:00:00 |
| 修稿时间： | 2014/11/7 0:00:00 |
Improved Electrochemical performance of LiMnBO3/C composite synthesized by wet impregnating method |
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| tang an ping,He Zeqiang,Xu Guorong,peng rong hua and song hai shen.Improved Electrochemical performance of LiMnBO3/C composite synthesized by wet impregnating method[J].Rare Metal Materials and Engineering,2017,46(1):78-82. |
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| Authors: | tang an ping He Zeqiang Xu Guorong peng rong hua and song hai shen |
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| Affiliation: | School of Chemistry and chemical Engineering, Hunan University of Science and Technology,Hunan University of Science and Technology,School of Chemistry and chemical Engineering, Hunan University of Science and Technology,School of Chemistry and chemical Engineering, Hunan University of Science and Technology,School of Chemistry and chemical Engineering, Hunan University of Science and Technology |
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| Abstract: | Hexagonal-LiMnBO3/C composite was prepared by the wet impregnating method using the 3D-network ketchen black (KB) as both temple and conductive framework. The crystal structure, morphology and specific surface area were characterized by X-ray diffraction, scanning electron microscopy and nitrogen sorption measurements, respectively. The electrochemical properties of the composite were studied by galvanostatic charge/discharge and cyclic voltammetry measurements. When tested at C/20 rate for Li ion insertion/extraction properties, LiMnBO3/C composite exhibits good cycle capability with discharge capacity retention of 87.4% at the 30th cycle. As the current rate increases from C/20, C/10 to C/5, good rate capability was obtained for all rates with initial discharge specific capacities of 138.8, 124.5 and 100.5 mA h g-1, respectively. |
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| Keywords: | LiMnBO3 lithium ion batteries cathode |
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