Preparation and evaluation of a separator with an asymmetric structure for lithium-ion batteries | |
Wang, Yanqing1,2; Zhu, Shaoyin1; Sun, Deye1; Jin, Yongcheng1 | |
2016 | |
发表期刊 | RSC ADVANCES |
卷号 | 6期号:107页码:105461-105468 |
摘要 | The different electrochemical characteristics stemming from the cathode and anode of lithium-ion batteries may have different effects on the surface properties of contacted separators. Herein, a series of composite separators with an asymmetric porous structure are fabricated by a one-step phase inversion method coupled with the settling of SiO2 nanoparticles due to gravity within the poly(vinylidenefluorideco-hexafluoropylene) (PVDF-HFP) polymer matrix. The unique asymmetric porous separators are composed of a PVDF-HFP-rich layer with high porosity on the front surface, which is in contact with the air, and a SiO2-rich layer on the back surface, which is in contact with the substrate. Besides their excellent thermal stability and high safety towards fire, these asymmetric porous separators result in a high discharge capacity, enhanced cycling performance and excellent rate capability when assembled with a LiNi0.5Mn1.5O4 cathode in coin cells, indicating that the asymmetric porous composite separators could be a promising candidate to improve the performance of lithium-ion batteries. |
文章类型 | Article |
WOS标题词 | Science & Technology ; Physical Sciences |
DOI | 10.1039/c6ra21089a |
关键词[WOS] | GEL POLYMER ELECTROLYTE ; COMPOSITE SEPARATOR ; ELECTROCHEMICAL PERFORMANCE ; POLYPROPYLENE SEPARATORS ; MODIFIED SILICAS ; MEMBRANE ; ARCHITECTURE |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Chemistry |
项目资助者 | National Key Research and Development Program of China: Tackling Key Technologies for Development and Industrialization of Power Lithium Ion Battery with High Specific Energy(2016YFB0100506) |
WOS类目 | Chemistry, Multidisciplinary |
WOS记录号 | WOS:000388116500064 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qibebt.ac.cn/handle/337004/9102 |
专题 | 先进界面技术研究组 |
作者单位 | 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Yanqing,Zhu, Shaoyin,Sun, Deye,et al. Preparation and evaluation of a separator with an asymmetric structure for lithium-ion batteries[J]. RSC ADVANCES,2016,6(107):105461-105468. |
APA | Wang, Yanqing,Zhu, Shaoyin,Sun, Deye,&Jin, Yongcheng.(2016).Preparation and evaluation of a separator with an asymmetric structure for lithium-ion batteries.RSC ADVANCES,6(107),105461-105468. |
MLA | Wang, Yanqing,et al."Preparation and evaluation of a separator with an asymmetric structure for lithium-ion batteries".RSC ADVANCES 6.107(2016):105461-105468. |
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