PET基陶瓷隔膜的制备及性能研究

无机材料学报, 2016, 31(12): 1301-1305. doi: 10.15541/jim20160159

PET基陶瓷隔膜的制备及性能研究

谢晓华 ^1, , 李晓哲 ^2, , 李为标 ^3, , 邵光杰 ^4, , 夏保佳 ^5,

1.中国科学院上海微系统与信息技术研究所,上海,201800

2.中国科学院上海微系统与信息技术研究所,上海201800;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.中国科学院上海微系统与信息技术研究所,上海201800;上海大学理学院,化学系,上海201900

4.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

5.中国科学院上海微系统与信息技术研究所,上海,201800

基金项目: National Natural Science Foundation of China(21303245) 国家自然科学基金(21303245)Key Basic Research Programs of Science and Technology Commission of Shanghai Municipality(12JC1410000) 上海市基础研究重点项目(12JC1410000)

关键词： PET , 陶瓷隔膜 , 热稳定性 , 电化学性能

Fabrication and Performance of PET-ceramic Separators

Keywords： PET , ceramic separator , thermal stability , electrochemical properties

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.

参考文献

[1]	Won-Kyung Shin;Dong-Won Kim.High performance ceramic-coated separators prepared with lithium ion-containing SiO_2 particles for lithium-ion batteries[J].Journal of Power Sources,2013Mar.15(Mar.15):54-60.
[2]	Dong Fu;Ben Luan;Steve Argue;Martin N. Bureau;Isobel J. Davidson.Nano SiO_2 particle formation and deposition on polypropylene separators for lithium-ion batteries[J].Journal of Power Sources,2012May 15(May 15):325-333.
[3]	Hyun-Seok Jeong;Eun-Sun Choi;Sang-Young Lee.Composition ratio-dependent structural evolution of SiO_2/poly(vinylidene fluoride-hexafluoropropylene)-coated poly(ethylene terephthalate) nonwoven composite separators for lithium-ion batteries[J].Electrochimica Acta,2012:317-322.
[4]	Juneun Lee;Cho-Long Lee;Kyusung Park;Il-Doo Kim.Synthesis of an Al_2O_3-coated polyimide nanofiber mat and its electrochemical characteristics as a separator for lithium ion batteries[J].Journal of Power Sources,2014Feb.15(Feb.15):1211-1217.
[5]	Cycling performance of lithium-ion batteries assembled with a hybrid composite membrane prepared by an electrospinning method[J].Journal of Power Sources,201018(18):6197.
[6]	Christopher J. Orendorff.The Role of Separators in Lithium-Ion Cell Safety[J].The Electrochemical Society interface,20122(2):61-65.
[7]	Ju-Hyun Cho;Jang-Hoon Park;Jong Hun Kim.Facile fabrication of nanoporous composite separator membranes for lithium-ion batteries: poly(methyl methacrylate) colloidal particles-embedded nonwoven poly(ethylene terephthalate)[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,201122(22):8192-8198.
[8]	Jia Li;Jian Zhang;Xigui Zhang;Chuanzheng Yang;Naixin Xu;Baojia Xia.Study of the storage performance of a Li-ion cell at elevated temperature[J].Electrochimica Acta,20103(3):927-934.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网