Low-temperature one-step solid-phase synthesis of carbon-encapsulated TiO2 nanocrystals as anode materials for lithium-ion batteries
文献类型：期刊论文
| 作者 | Liu, Boyang; Shao YF(邵颖峰) ; Xiang, Xin; Ren, Jiayuan; Li, Wenge; Liu, BY
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| 刊名 | IONICS
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 23期号:8页码:2013-2024 |
| 关键词 | Solid-phase Synthesis Core-shell Structure Tio2 Nanocrystals Lithium-ion Battery |
| ISSN号 | 0947-7047 |
| DOI | 10.1007/s11581-017-2053-6 |
| 文献子类 | Article |
| 英文摘要 | A simple and highly efficient method is developed for in situ one-step preparation of carbon co-encapsulated anatase and rutile TiO2 nanocrystals (TiO2@C) with core-shell structure for lithium-ion battery anode. The synthesis is depending on the solid-phase reaction of titanocene dichloride with ammonium persulfate in an autoclave at 200 degrees C for 30 min. The other three titanocene complexes including bis(cyclopentadienyl)dicarbonyl titanium, cyclopentadienyltitanium trichloride, and cyclopentadienyl(cycloheptatrienyl)titanium are used instead to comprehensively investigate the formation mechanism and to improve the microstructure of the product. The huge heat generated during the explosive reaction cleaves the cyclopentadiene ligands into small carbon fragments, which form carbon shell after oxidative dehydrogenation coating on the TiO2 nanocrystals, resulting in the formation of core-shell structure. The TiO2 nanocrystals prepared by titanocene dichloride have an equiaxed morphology with a small diameter of 10-55 nm and the median size is 30.3 nm. Hundreds of TiO2 nanocrystals are encapsulated together by the worm-like carbon shell, which is amorphous and about 20-30 nm in thickness. The content of TiO2 nanocrystals in the nanocomposite is about 31.1 wt.%. This TiO2@C anode shows stable cyclability and retains a good reversible capacity of 400 mAh g(-1) after 100 cycles at a current density of about 100 mA g(-1), owing to the enhanced conductivity and protection of carbon shell. |
| 分类号 | 二类 |
| WOS关键词 | SENSITIZED SOLAR-CELLS ; HIGH-PERFORMANCE ANODE ; ELECTROPHILIC OXIDATION ; ANATASE TIO2 ; NANOTUBE ; STORAGE ; NANOCOMPOSITE ; GRAPHENE ; CAPABILITY ; NANOFIBERS |
| WOS研究方向 | Chemistry ; Electrochemistry ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000406286800009 |
| 资助机构 | Natural Science Foundation of Shanghai(14ZR1419400 ; National Natural Science Foundation of China(11572326) ; Opening fund of State Key Laboratory of Nonlinear Mechanics, and Technology Innovation Action of Shanghai(12nm0503100) ; 15ZR1420500) |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/60921]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Liu, BY |
| 推荐引用方式 GB/T 7714 | Liu, Boyang,Shao YF,Xiang, Xin,et al. Low-temperature one-step solid-phase synthesis of carbon-encapsulated TiO2 nanocrystals as anode materials for lithium-ion batteries[J]. IONICS,2017,23(8):2013-2024. |
| APA | Liu, Boyang,邵颖峰,Xiang, Xin,Ren, Jiayuan,Li, Wenge,&Liu, BY.(2017).Low-temperature one-step solid-phase synthesis of carbon-encapsulated TiO2 nanocrystals as anode materials for lithium-ion batteries.IONICS,23(8),2013-2024. |
| MLA | Liu, Boyang,et al."Low-temperature one-step solid-phase synthesis of carbon-encapsulated TiO2 nanocrystals as anode materials for lithium-ion batteries".IONICS 23.8(2017):2013-2024. |
入库方式： OAI收割
来源：力学研究所
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