Unveiling the Effect of Surface and Bulk Structure on Electrochemical Properties of Disproportionated SiOx Anodes
文献类型：期刊论文
| 作者 | Long, Zuxin; Fu, Rusheng; Ji, Jingjing; Feng, Zuyong; Liu, Zhaoping |
| 刊名 | CHEMNANOMAT
 |
| 出版日期 | 2020 |
| 卷号 | 6期号:7页码:1127-1135 |
| 关键词 | HIGH-PERFORMANCE ANODE HIGH-CAPACITY NEGATIVE ELECTRODE SILICON MONOXIDE REACTION-MECHANISM ION BATTERIES CARBON COMPOSITE STABILITY CYCLE |
| DOI | 10.1002/cnma.202000150 |
| 英文摘要 | As a promising lithium-ion battery anode materials, silicon suboxides (SiOx) exhibit elusive microstructure with atomic-scale disproportionation which reveals a strong relation to performance. Generally, the structure of SiOx could be tuned via high-temperature treatment. In this work, disproportionated SiOx are prepared to systematically discuss the internal relationship among microstructure, physicochemical properties and electrochemical performance. After annealing, amorphous SiO2 and nanocrystalline Si appear, and the SiO2 accumulating on the surface results in large resistance and low Li-ion diffusivity, which leads to large overpotential and poor performance. If mechanical milling is employed followed by annealing, the SiO2 layer can be crushed, SiOx and Si with electrochemical activity are uncovered. Further research on the SiOx with diverse degrees of disproportionation indicates that proper amount of Si and SiO2 determines the optimal electrochemical performance. This result gives an in-depth understanding and probable guidance to the modification investigation of SiOx anode for Li-ion batteries. |
| 学科主题 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19603]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Feng, ZY (corresponding author), Guangdong Univ Technol Inst, Sch Phys & Optoelec Engn, Guangzhou 510006, Peoples R China. 2.Liu, ZP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Adv Li Ion Battery Engn Lab, Ningbo 315201, Peoples R China. 3.Liu, ZP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Graphene Technol & Applicat Zhejiang Prov, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Long, Zuxin,Fu, Rusheng,Ji, Jingjing,et al. Unveiling the Effect of Surface and Bulk Structure on Electrochemical Properties of Disproportionated SiOx Anodes[J]. CHEMNANOMAT,2020,6(7):1127-1135. |
| APA | Long, Zuxin,Fu, Rusheng,Ji, Jingjing,Feng, Zuyong,&Liu, Zhaoping.(2020).Unveiling the Effect of Surface and Bulk Structure on Electrochemical Properties of Disproportionated SiOx Anodes.CHEMNANOMAT,6(7),1127-1135. |
| MLA | Long, Zuxin,et al."Unveiling the Effect of Surface and Bulk Structure on Electrochemical Properties of Disproportionated SiOx Anodes".CHEMNANOMAT 6.7(2020):1127-1135. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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。