Propylene oxide-assisted fast sol-gel synthesis of mesoporous and nano-structured LiFePO4/C cathode materials
文献类型：期刊论文
| 作者 | Wang, Fuqing1,2; Chen, Jian1; Wu, Minghao1,2; Yi, Baolian1 |
| 刊名 | ionics
 |
| 出版日期 | 2013-03-01 |
| 卷号 | 19期号:3页码:451-460 |
| 关键词 | Lithium iron phosphate Propylene oxide Sol-gel method Cathode material Lithium ion battery |
| 英文摘要 | lifepo4/c nanocomposites are synthesized by a propylene oxide-assisted fast sol-gel method using fecl3, lino3, nh4h2po4, and sucrose as the starting materials. it was found that after adding propylene oxide into the solution containing the starting materials, a monolithic jelly-like fepo4 gel containing lithium and carbon source is generated in a few minutes without controlling the ph value of the solution and a time-consuming heating process. propylene oxide plays a key role in the fast generation of the precursor gel. the final products of lifepo4/c are obtained by sintering the dry precursor gel. the structures, micro-morphologies, and electrochemical properties of the lifepo4/c composites are investigated using x-ray diffraction, scanning electron microscopy, transmission electron microscopy, nitrogen adsorption-desorption analysis, electrochemical impedance spectrum, and charge-discharge cycling tests. the results indicate that the lifepo4/c composite prepared by sintering the precursor gel at 680 a degrees c for 5 h is about 30 nm in size with a meso-porous structure (the main pore size distribution is around 3.4 nm). it delivers 166.7 and 105.8 mah g(-1) at 0.2 and 30 c, respectively. the discharge specific capacity is 97.8 mah g(-1) even at 40 c. the cycling performance of the prepared lifepo4/c composite is stable. the excellent electrochemical performance of the lifepo4/c composite is attributed to the nano-sized and mesoporous structure of lifepo4/c and the in-situ surface coating of the carbon. it was also found that propylene oxide is crucial for the generation of mesoporous and nano-structured lifepo4/c. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical ; electrochemistry ; physics, condensed matter |
| 研究领域[WOS] | chemistry ; electrochemistry ; physics |
| 关键词[WOS] | lithium iron phosphate ; well-defined macropores ; electrochemical performance ; room-temperature ; ion batteries ; particle-size ; phase ; composites ; lixfepo4 ; route |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000315419600011 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/137850]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Adv Rechargeable Batteries, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Fuqing,Chen, Jian,Wu, Minghao,et al. Propylene oxide-assisted fast sol-gel synthesis of mesoporous and nano-structured LiFePO4/C cathode materials[J]. ionics,2013,19(3):451-460. |
| APA | Wang, Fuqing,Chen, Jian,Wu, Minghao,&Yi, Baolian.(2013).Propylene oxide-assisted fast sol-gel synthesis of mesoporous and nano-structured LiFePO4/C cathode materials.ionics,19(3),451-460. |
| MLA | Wang, Fuqing,et al."Propylene oxide-assisted fast sol-gel synthesis of mesoporous and nano-structured LiFePO4/C cathode materials".ionics 19.3(2013):451-460. |
入库方式： OAI收割
来源：大连化学物理研究所
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