Fe3C doped modified nano-Si/C composites as high-coulombic-efficiency anodes for lithium-ion batteries
文献类型：期刊论文
| 作者 | Lu, Jijun1,2,3; Liu, Junhao1,2,3; Gong, Xuzhong1,2,3; Wang, Zhi1,2,3 |
| 刊名 | SUSTAINABLE ENERGY & FUELS
 |
| 出版日期 | 2021-10-20 |
| 页码 | 11 |
| ISSN号 | 2398-4902 |
| DOI | 10.1039/d1se01400e |
| 英文摘要 | Silicon is considered to be the most promising candidate for the anode of high energy density lithium-ion batteries. Nanometerization has been proven to be an effective method for improving the stress accumulation caused by the volume expansion of silicon. However, new issues such as poor initial coulombic efficiency (ICE) need to be solved because nanostructure silicon has an increased specific surface area. Here, a doping modification strategy is developed by a solvothermal combined with low-pressure gas-solid conversion reaction, and innovatively formed an Fe3C/N co-doped carbon coating on the nano-silicon surface. The doping of Fe3C in the composite material can catalyze the formation of a thin and stable solid electrolyte interphase (SEI) on the electrode surface and serve as a framework to stabilize the electrode structure during charge and discharge. As a result, Fe3C doping can significantly increase the ICE of the electrode from 66.4% to 87.1%, and the stable efficiency exhibited a rapid increase upwards of 99.5% after only 6 cycles including the first formation cycle, compared to the non-doped structure. The modified nano-silicon with Fe3C doping can provide high reversible capacity (1443.3 mA h g(-1) after 200 cycles at 0.2 A g(-1)) and long cycle life (74% capacity retention after 1000 cycles at 0.5 A g(-1)). |
| WOS关键词 | SOLID-ELECTROLYTE-INTERPHASE ; HIGH-ENERGY ; SILICON ANODES ; FLUOROETHYLENE CARBONATE ; PERFORMANCE ; NANOPARTICLES ; CAPACITY ; FACILE |
| 资助项目 | National Key R&D Program of China[2018YFC1901801] ; National Natural Science Foundation of China[52074255] ; National Natural Science Foundation of China[51704271] ; National Natural Science Foundation of China[U1702251] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000716041100001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/50822]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Liu, Junhao; Wang, Zhi |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Jijun,Liu, Junhao,Gong, Xuzhong,et al. Fe3C doped modified nano-Si/C composites as high-coulombic-efficiency anodes for lithium-ion batteries[J]. SUSTAINABLE ENERGY & FUELS,2021:11. |
| APA | Lu, Jijun,Liu, Junhao,Gong, Xuzhong,&Wang, Zhi.(2021).Fe3C doped modified nano-Si/C composites as high-coulombic-efficiency anodes for lithium-ion batteries.SUSTAINABLE ENERGY & FUELS,11. |
| MLA | Lu, Jijun,et al."Fe3C doped modified nano-Si/C composites as high-coulombic-efficiency anodes for lithium-ion batteries".SUSTAINABLE ENERGY & FUELS (2021):11. |
入库方式： OAI收割
来源：过程工程研究所
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。