Porous micro-spherical aggregates of lifepo4/c nanocomposites: a novel and simple template-free concept and synthesis via sol-gel-spray drying method
文献类型：期刊论文
| 作者 | Yu, Feng2; Zhang, Jingjie1; Yang, Yanfeng; Song, Guangzhi |
| 刊名 | Journal of power sources
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 195期号:19页码:6873-6878 |
| ISSN号 | 0378-7753 |
| 关键词 | Lithium iron phosphate Cathode material Porous microsphere Sol-gel-sd method |
| DOI | 10.1016/j.jpowsour.2010.01.042 |
| 通讯作者 | Zhang, jingjie(jjzhang@mail.ipc.ac.cn) |
| 英文摘要 | Porous micro-spherical aggregates of lifepo4/c nanocomposites were prepared with a process of spray drying at 200 degrees c and subsequent heat treatment at 700 degrees c for 12 h by a novel and simple template-free sol-gel-sd method independent of surfactants or templates. the results indicate that the as-obtained lifepo4 porous microspheres have the mean diameter of 19.8 mu m, average pore size of 45 nm, and large specific surface area (20.2 m(2) g(-1)) with evenly distributed carbon (4.5 wt.%). the particles can be easily brought into contact with electrolyte, facilitating electric and lithium ion diffusion. they present large reversible discharge capacity of 137.5 mah g(-1) at the current density of 0.1 c, good rate capacity of 53.8 mah g(-1) at 10 c, and excellent capacity retention rate closed to 100% after various current densities in the region of 2.0-4.3 v. (c) 2010 elsevier b.v. all rights reserved. |
| WOS关键词 | LITHIUM-ION BATTERIES ; CATHODE MATERIALS ; ELECTRODE MATERIALS ; IRON PHOSPHATE ; CITRIC-ACID ; PYROLYSIS ; NANOMATERIALS ; PERFORMANCE ; POWDERS |
| WOS研究方向 | Electrochemistry ; Energy & Fuels |
| WOS类目 | Electrochemistry ; Energy & Fuels |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000279459500079 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2408910 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhang, Jingjie |
| 作者单位 | 1.Chinese Acad Sci, Tech Inst Phys & Chem, Engn Res Ctr Microsphere Mat, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Feng,Zhang, Jingjie,Yang, Yanfeng,et al. Porous micro-spherical aggregates of lifepo4/c nanocomposites: a novel and simple template-free concept and synthesis via sol-gel-spray drying method[J]. Journal of power sources,2010,195(19):6873-6878. |
| APA | Yu, Feng,Zhang, Jingjie,Yang, Yanfeng,&Song, Guangzhi.(2010).Porous micro-spherical aggregates of lifepo4/c nanocomposites: a novel and simple template-free concept and synthesis via sol-gel-spray drying method.Journal of power sources,195(19),6873-6878. |
| MLA | Yu, Feng,et al."Porous micro-spherical aggregates of lifepo4/c nanocomposites: a novel and simple template-free concept and synthesis via sol-gel-spray drying method".Journal of power sources 195.19(2010):6873-6878. |
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来源：中国科学院大学
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