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| 5V正极材料LiNi_(0.5)Mn_(1.5)O_(4-x)F_x(x=0,0.1)的流变相法制备与表征 | |
| 引用本文： | 熊利芝,孔丽娜,梁凯,何则强.5V正极材料LiNi_(0.5)Mn_(1.5)O_(4-x)F_x(x=0,0.1)的流变相法制备与表征[J].精细化工,2010,27(2). |
| 作者姓名： | 熊利芝 孔丽娜 梁凯 何则强 |
| 作者单位： | 1. 吉首大学生物资源与环境科学学院,湖南,吉首,416000;中南大学化学化工学院,湖南,长沙,410083 2. 吉首大学生物资源与环境科学学院,湖南,吉首,416000;湘潭大学化学化工学院,湖南,湘潭,411105 3. 吉首大学生物资源与环境科学学院,湖南,吉首,416000 |
| 基金项目： | 中国博士后科学基金(2005037700);;湖南省自然科学基金(07JJ3014);;湖南省教育厅科学研究项目(07A058);;中南大学博士后科学基金(2004107)~~ |
| 摘 要： | 采用流变相法结合高温热处理制备LiNi0.5Mn1.5O4-xFx(x=0,0.1)。用X射线衍射、扫描电镜和电化学测试等手段对合成材料进行了表征。结果表明,F的掺入抑制了LiNi0.5Mn1.5O4颗粒长大,增强了Li+在固相中的扩散能力,改善了电极与电解质溶液之间的界面性质,有效地提高了LiNi0.5Mn1.5O4的循环性能和倍率性能。0.2C放电时LiNi0.5Mn1.5O3.9F0.1的首次放电容量达到147.8mA.h/g,经80次循环后平均每次循环的容量衰减仅为0.0068%。而0.5C和2.0C放电时首次放电容量达到0.2C放电时的94.2%和83.8%。 |
| 关 键 词： | LiNi0.5Mn1.5O4 氟掺杂 5V正极材料 流变相法 功能材料 |
Rheological Method Preparation and Charcterization of LiNi_(0.5) Mn_(1.5)O_(4-x)F_x(x=0,0.1)as 5 V Cathode Materials |
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| XIONG Li-zhi,KONG Li-na,LIANG Kai,HE Ze-qiang.Rheological Method Preparation and Charcterization of LiNi_(0.5) Mn_(1.5)O_(4-x)F_x(x=0,0.1)as 5 V Cathode Materials[J].Fine Chemicals,2010,27(2). | |
| Authors: | XIONG Li-zhi KONG Li-na LIANG Kai HE Ze-qiang |
| Affiliation: | 1.College of Biology and Environmental Sciences/a>;Jishou University/a>;Jishou 416000/a>;Hunan/a>;China/a>;2.School of Chemistry and Chemical Engineering/a>;Central South University/a>;Changsha 410083/a>;3.College of Chemistry and Chemical Engineering/a>;Xiangtan University/a>;Xiangtan 411105/a>;China |
| Abstract: | LiNi0.5Mn1.5O4-xFx(x=0,0.1)were synthesized via the rheological method combining with high temperature treatment.The microstructure,surface morphology and electrochemical properties were characterized by various electrochemical methods in combination with X-ray diffraction(XRD)and scanning electron microscope(SEM).Results show that the fluorine doping is favorable for supressing the growing up of LiNi0.5Mn1.5O4 particles,enhacing the difuusion ability of Li+ in solid state and improving the interfacial prop... |
| Keywords: | LiNi0 5Mn1 5O4 fluorine doping 5 V cathode materials rheological method functional materials |
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