Please wait a minute...
Acta Physico-Chimica Sinica  2010, Vol. 26 Issue (06): 1722-1726    DOI: 10.3866/PKU.WHXB20100618
PHYSICAL CHEMISTRY OF MATERIALS     
Preparation of Microporous Membranes by Swift Heavy Ion Irradiation and Impedance Characterization
QU Xiao-Hua, LIU Jie, WANG Zhao-Xiang, CAO Dian-Liang, FANG Xiang-Peng, ZHANG Ling, DUAN Jing-Lai, YAO Hui-Jun, CHEN Yan-Feng, SUN You-Mei, HOU Ming-Dong
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China; Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China; Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China
Download:   PDF(1768KB) Export: BibTeX | EndNote (RIS)      

Abstract  

Polypropylene (PP) microporous membranes were successfully prepared by swift heavy ion irradiation and track-etching. Polypropylene foils were irradiated with 197Au ions of kinetic energy 11.4 MeV·u-1 (total energy of 2245.8 MeV) and fluence 1×108 ions·cm-2 at normal incidence. The damaged regions produced by the gold ions along the trajectories were etched in H2SO4 and K2Cr2O7 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.



Key wordsElectrochemical impedance spectroscopy      Polypropylene microporous membrane      Lithium-ion battery separator      Swift heavy ion irradiation      Track-etching     
Received: 20 January 2010      Published: 26 April 2010
MSC2000:  O647  
Corresponding Authors: LIU Jie     E-mail: j.liu@impcas.ac.cn
Cite this article:

QU Xiao-Hua, LIU Jie, WANG Zhao-Xiang, CAO Dian-Liang, FANG Xiang-Peng, ZHANG Ling, DUAN Jing-Lai, YAO Hui-Jun, CHEN Yan-Feng, SUN You-Mei, HOU Ming-Dong. Preparation of Microporous Membranes by Swift Heavy Ion Irradiation and Impedance Characterization. Acta Physico-Chimica Sinica, 2010, 26(06): 1722-1726.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20100618     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2010/V26/I06/1722

[1] CHENG Qing-Li, ZHANG Wei-Hua, TAO Bin. Investigation of the Electrochemical Corrosion of Copper under a Micrometric Electrolyte Droplet Using a Three-Electrode System[J]. Acta Physico-Chimica Sinica, 2015, 31(7): 1345-1350.
[2] LI Song-Mei, YIN Xiao-Lin, LIU Jian-Hua, ZHANG You, XUE Bing. Effect of Doping with Zn-Al-[V10O28]6- Layered Double Hydroxide on the Properties of Hybrid Sol-Gel Coatings on the LY12 Aluminum Surface[J]. Acta Physico-Chimica Sinica, 2014, 30(11): 2092-2100.
[3] SUN Xian-Zhong, HUANG Bo, ZHANG Xiong, ZHANG Da-Cheng, ZHANG Hai-Tao, MA Yan-Wei. Experimental Investigation of Electrochemical Impedance Spectroscopy of Electrical Double Layer Capacitor[J]. Acta Physico-Chimica Sinica, 2014, 30(11): 2071-2076.
[4] LUO Bing, XIA Da-Hai. Characterization of pH Effect on Corrosion Resistance of Nuclear Steam Generator Tubing Alloy by In-situ Scanning Electrochemical Microscopy[J]. Acta Physico-Chimica Sinica, 2014, 30(1): 59-66.
[5] SHANGGUAN Peng-Peng, TONG Shao-Ping, LI Hai-Li, LENG Wen-Hua. Influence of the Potential on the Charge-Transfer Rate Constant of Photooxidation of Water over α-Fe2O3 and Ti-Doped α-Fe2O3[J]. Acta Physico-Chimica Sinica, 2013, 29(09): 1954-1960.
[6] SUN Cheng, LI Xi-Ming, XU Jin, YAN Mao-Cheng, WANG Fu-Hui, WANG Zhen-Yao. Effect of Urea on Microbiologically Induced Corrosion of Carbon Steel in Soil[J]. Acta Physico-Chimica Sinica, 2012, 28(11): 2659-2668.
[7] DAI Yu-Hua, LI Xiao-Jie, FANG Yan-Yan, SHI Qiu-Fei, LIN Yuan, YANG Ming-Shan. Influence of Polymer Gel Electrolyte on the Performance of Dye-Sensitized Solar Cells Analyzed by Electrochemical Impedance Spectroscopy[J]. Acta Physico-Chimica Sinica, 2012, 28(11): 2669-2675.
[8] PANG Ran, ZUO Yu, TANG Yu-Ming, XIONG Jin-Ping. Electrochemical Impedance Spectroscopy Study of Failure Process of an Epoxy/Fluorocarbon Coating System[J]. Acta Physico-Chimica Sinica, 2012, 28(05): 1146-1152.
[9] YUAN Zheng, CUI Yong-Li, SHEN Ming-Fang, QIANG Ying-Huai, ZHUANG Quan-Chao. Preparation and Electrochemical Performance of LiTi2(PO4)3/C Composite Cathode for Lithium Ion Batteries[J]. Acta Physico-Chimica Sinica, 2012, 28(05): 1169-1176.
[10] XU Zi-Jie, JI Tao, ZHAO Lei, WANG Wei-Yan, YANG Chun-Yan, GAN Li-Hua. Restructured Carbon Aerogels and Their Electrochemical Performances[J]. Acta Physico-Chimica Sinica, 2012, 28(02): 361-366.
[11] WANG Ya-Ping, ZHAO Xu-Hui, LU Xiang-Yu, ZUO Yu. Corrosion Protection of Ceria Particles in Mg-Rich Primer on AZ91D Magnesium Alloy[J]. Acta Physico-Chimica Sinica, 2012, 28(02): 407-413.
[12] ZHU Yan-Feng, ZHANG Juan, ZHANG Yi-Yong, DING Min, QI Hai-Qing, DU Rong-Gui, LIN Chang-Jian. Anticorrosion Properties of Modified Nano-TiO2 Films Prepared by Sol-Gel Method[J]. Acta Physico-Chimica Sinica, 2012, 28(02): 393-398.
[13] CHANG Lin-Rong, CAO Fa-He, CAI Jing-Shun, LIU Wen-Juan, ZHENG Jun-Jun, ZHANG Jian-Qing, CAO Chu-Nan. Polarization Behavior of Magnesium Alloy AZ91D with Micro-Arc Oxidation Coating in NaCl Solution[J]. Acta Physico-Chimica Sinica, 2012, 28(01): 127-136.
[14] XU Shou-Dong, ZHUANG Quan-Chao, SHI Yue-Li, ZHU Ya-Bo, QIU Xiang-Yun, SUN Zhi. Electrochemical Impedance Spectra of Intercalation Compound Electrodes: Models and Theoretical Simulations[J]. Acta Physico-Chimica Sinica, 2011, 27(10): 2353-2359.
[15] TU Xiao-Hua, CHU You-Qun, MA Chun-An. Electrochemical Behavior of Nitroaromatics on Pt Microelectrode in an Aprotic Medium[J]. Acta Physico-Chimica Sinica, 2011, 27(09): 2148-2152.