Fast sol-gel synthesis of mesoporous Li2MnSiO4/C nanocomposite with improved electrochemical performance for lithium-ion batteries
文献类型：期刊论文
| 作者 | Wang, Fuqing1,2; Chen, Jian1; Wang, Chong1; Yi, Baolian1 |
| 刊名 | journal of electroanalytical chemistry
 |
| 出版日期 | 2013 |
| 卷号 | 688页码:123-129 |
| 关键词 | Lithium manganese silicate Nanocomposite Hydrochloric acid Propylene oxide Sol-gel method Lithium-ion battery |
| 英文摘要 | a fast sal-gel process that differs in important details from previously reported methods for preparing li2mnsio4/c nanocomposite was reported. in the process, hydrochloric acid was used to enhance the hydrolysis of tetraethyl orthosilicate (teos) to obtain silanols firstly. and then propylene oxide was added to promote the condensation of the silanols to form a jelly-like sio2 gel precursor containing lithium and manganese sources in about 3 min at room temperature. the final product of li2mnsio4/c was obtained by calcining the gel precursor with sucrose. the structure, micro-morphology and electrochemical property of the as-prepared li2mnsio4/c nanocomposite were characterized by xrd, tem, n-2 adsorption-desorption, cyclic voltammetry (cv), galvanostatic charge-discharge, and electrochemical impedance spectroscopy (eis). the results indicate that the li2mnsio4/c nanocomposite with mesoporous structure is composed of 10-20 nm nanoparticles homogenously coated by the carbon. the electrochemical measurements reveal that the initial charge and discharge specific capacities of the prepared li2mnsio4/c nanocomposite are 275.2 mah g(-1) and 164.2 mah g(-1), respectively. after 60 cycles, the discharge capacity retention is 80%. the excellent electrochemical performance can be attributed to the nano-sized composites with a mesoporous structure and the in situ surface carbon coating. (c) 2012 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, analytical ; electrochemistry |
| 研究领域[WOS] | chemistry ; electrochemistry |
| 关键词[WOS] | cathode material ; electrode materials ; storage devices ; oxide aerogels ; anode material ; li ; lifepo4 ; hydrolysis ; composite ; surface |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000317158800021 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/137872]  |
| 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, Adv Rechargeable Batteries Lab, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Fuqing,Chen, Jian,Wang, Chong,et al. Fast sol-gel synthesis of mesoporous Li2MnSiO4/C nanocomposite with improved electrochemical performance for lithium-ion batteries[J]. journal of electroanalytical chemistry,2013,688:123-129. |
| APA | Wang, Fuqing,Chen, Jian,Wang, Chong,&Yi, Baolian.(2013).Fast sol-gel synthesis of mesoporous Li2MnSiO4/C nanocomposite with improved electrochemical performance for lithium-ion batteries.journal of electroanalytical chemistry,688,123-129. |
| MLA | Wang, Fuqing,et al."Fast sol-gel synthesis of mesoporous Li2MnSiO4/C nanocomposite with improved electrochemical performance for lithium-ion batteries".journal of electroanalytical chemistry 688(2013):123-129. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。