Preparation of Microporous Membranes by Swift Heavy Ion Irradiation and Impedance Characterization

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Preparation of Microporous Membranes by Swift Heavy Ion Irradiation and Impedance Characterization
	Qu, XH ; Liu, J ; Wang, ZX ; Cao, DL ; Fang, XP ; Zhang, L ; Duan, JL ; Yao, HJ ; Chen, YF ; Sun, YM ; Hou, MD
刊名	ACTA PHYSICO-CHIMICA SINICA
	2010
卷号	26 期号:6 页码:1722
关键词	BATTERIES SEPARATOR FABRICATION NANOWIRES
ISSN号	1000-6818
通讯作者	Liu, J (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
中文摘要	Polypropylene (PP) microporous membranes were successfully prepared by swift heavy ion irradiation and track-etching. Polypropylene foils were irradiated with (197)Au ions of kinetic energy 11.4 MeV.u(-1) (total energy of 2245.8 MeV) and fluence 1x10(8) ions.cm(-2) at normal incidence. The damaged regions produced by the gold ions along the trajectories were etched in H(2)SO(4) and K(2)Cr(2)O(7) solutions leading to the formation of cylindrical pores in the membranes. The pore diameters of the PP microporous membranes increased from 380 to 1610 nm as the etching time increased from 5 to 30 min. The surface and cross-section morphologies of the porous membranes were characterized by scanning electron microscopy (SEM). The micropores in the membranes were found to be cylindrical in shape, homogeneous in distribution, and equal in size. Some mathematical relations of the porosity of the PP microporous membranes were established by analytic derivation. The microporous membranes were used in lithium-ion batteries to measure their properties as separators. The electrical conductivity of the porous membrane immersed in liquid electrolyte was found to be comparable to that of commercial separators by electrochemical impedance spectroscopy (EIS). The results showed that the porosity and electrical conductivity were dependent on the ion fluence and etching time. By adjusting these two factors, microporous membranes with good porosity and electrical conductivity were made that met the requirements for commercial use.
收录类别	SCI
资助信息	West Light Foundation of the Chinese Academy of Sciences; National Natural Science Foundation of China [10775161, 10805062, 10975164]
语种	中文
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/51340]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Qu, XH,Liu, J,Wang, ZX,et al. Preparation of Microporous Membranes by Swift Heavy Ion Irradiation and Impedance Characterization[J]. ACTA PHYSICO-CHIMICA SINICA,2010,26(6):1722.
APA	Qu, XH.,Liu, J.,Wang, ZX.,Cao, DL.,Fang, XP.,...&Hou, MD.(2010).Preparation of Microporous Membranes by Swift Heavy Ion Irradiation and Impedance Characterization.ACTA PHYSICO-CHIMICA SINICA,26(6),1722.
MLA	Qu, XH,et al."Preparation of Microporous Membranes by Swift Heavy Ion Irradiation and Impedance Characterization".ACTA PHYSICO-CHIMICA SINICA 26.6(2010):1722.