| PET基陶瓷隔膜的制备及性能研究 |
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| 引用本文： | 谢晓华,李晓哲,李为标,邵光杰,夏保佳.PET基陶瓷隔膜的制备及性能研究[J].无机材料学报,2016,31(12):1301-1305. |
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| 作者姓名： | 谢晓华 李晓哲 李为标 邵光杰 夏保佳 |
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| 作者单位： | (1. 中国科学院 上海微系统与信息技术研究所, 上海201800; 2. 燕山大学 环境与化学工程学院, 河北省应用化学重点实验室, 秦皇岛066004; 3. 上海大学 理学院, 化学系, 上海201900) |
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| 基金项目： | 上海市基础研究重点项目(12JC1410000);国家自然科学基金(21303245);Key Basic Research Programs of Science and Technology Commission of Shanghai Municipality (12JC1410000);National Natural Science Foundation of China (21303245) |
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| 摘 要： | 以聚偏氟乙烯-六氟丙烯共聚物(PVDF-HFP)为粘结剂, 用浸涂法在对苯二甲酸乙二醇酯(PET)隔膜上同时涂覆不同粒径的SiO2和Al2O3, 使PET的大孔得到更有效的填充, 充分发挥了两种陶瓷及其粒径的各自优势。系统考察了SiO2与Al2O3相对含量对陶瓷隔膜的表面形貌、孔隙率、吸液率、热稳定性、离子电导率和电化学阻抗谱(EIS)的影响。研究了SiO2/Al2O3为3/7(wt%)的陶瓷隔膜组装成MCMB/LiNi1/3Co1/3Mn1/3O2电池的电化学性能, 并与商业聚丙烯(PP)隔膜对比。结果表明: 该陶瓷隔膜具有更好的综合性能, 100次循环后的容量保持率为93.9%, 10C电流下仍具有82.7 mAh/g的容量, 优于商业PP隔膜。
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| 关 键 词： | PET 陶瓷隔膜 热稳定性 电化学性能 |
| 收稿时间： | 2016-03-21 |
| 修稿时间： | 2016-03-28 |
Fabrication and Performance of PET-ceramic Separators |
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| XIE Xiao-Hua,LI Xiao-Zhe,LI Wei-Biao,SHAO Guang-Jie,XIA Bao-Jia.Fabrication and Performance of PET-ceramic Separators[J].Journal of Inorganic Materials,2016,31(12):1301-1305. |
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| Authors: | XIE Xiao-Hua LI Xiao-Zhe LI Wei-Biao SHAO Guang-Jie XIA Bao-Jia |
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| Affiliation: | (1. Shanghai Institute of Microsystem And Information Technology, Chinese Academy of Sciences , Shanghai 201800, China; 2. Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China; 3. Department of Chemistry, Shanghai University, Shanghai 201900, China) |
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| Abstract: | Ceramic-coating separators were prepared with poly(ethylene terephthalate) (PET) nonwoven membrane as the substrate. Different particle sizes and variable ratios of SiO2 and Al2O3 were coated on the PET surface by dip coating technology, using PVDF-HFP as the binder. The separators took advantage of both kinds of ceramic particles, so that the big pores of PET were filled more effectively. Surface morphology, porosity, electrolyte wettability, thermal stability, ionic conductivity, and electrochemical impedance spectroscope (EIS) of composite separators with different ratios of SiO2 to Al2O3 were systematically investigated, and separators with ratio of SiO2/Al2O3=3/7 showed superior performance. Electrochemical properties of MCMB / LiNi1/3Co1/3Mn1/3O2 2025-type coin cells assembled by the ceramic separators with ratio of SiO2/Al2O3=3/7 were also tested, as compared with commercialized PP separators. The results demonstrated that the ceramic separators performed with 93.9% capacity retention after 100 cycles and capacity of 82.7 mAh/g at 10C rate, better than PP separators. |
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| Keywords: | PET ceramic separator thermal stability electrochemical properties |
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