静电纺丝法制备POSS-(C3H6Cl)8复合聚偏氟乙烯聚合物隔膜的结构与性能

Jingyu Ma; Kun Sun; Xiaoyan Ma; Fang Chen; Yi Liu; Kaiqi Yang

doi:10.16865/j.cnki.1000-7555.2018.06.009

静电纺丝法制备POSS-(C₃H₆Cl)₈复合聚偏氟乙烯聚合物隔膜的结构与性能

Translated title of the contribution: Structure and Property of Electrospinning POSS-(C₃H₆Cl)₈ Composite Polyvinylidene Fluoride Separators

Jingyu Ma, Kun Sun, Xiaoyan Ma, Fang Chen, Yi Liu, Kaiqi Yang

School of Chemistry and Chemical Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

To improve the safety of Li-ion batteries, the polyvinylidene fluoride (PVDF) membrane containing octa chloropropyl polyhedral oligomeric silsesquioxane (POSS-(C₃H₆Cl)₈) was prepared by electrospinning technique. The morphology and mechanical property of electrospun polymer separators (EPSs) were analyzed at first, then the electrochemical window and the charge/discharge cycle stability of Li/LiFePO₄ cells were tested. Results show that the electrospun polymer separators have the preferable performance when the content of POSS-(C₃H₆Cl)₈ is 10%. Under this condition, the fibers are very uniform and have better morphology. The tensile strength and broken elongation are increased by 106.4% and 27.2%, respectively. The ionic conductivity is 3.8×10^-3 S/cm at room temperature, which is improved by 97.4% than that of pure PVDF separator. The electrochemical stability window of polymer film is 5.7 V. The Li-ion batteries assembled with EPSs have superior cycle stability and rate capability.

Translated title of the contribution	Structure and Property of Electrospinning POSS-(C₃H₆Cl)₈ Composite Polyvinylidene Fluoride Separators
Original language	Chinese (Traditional)
Pages (from-to)	54-59
Number of pages	6
Journal	Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
Volume	34
Issue number	6
DOIs	https://doi.org/10.16865/j.cnki.1000-7555.2018.06.009
State	Published - 1 Jun 2018

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title = "静电纺丝法制备POSS-(C3H6Cl)8复合聚偏氟乙烯聚合物隔膜的结构与性能",

abstract = "To improve the safety of Li-ion batteries, the polyvinylidene fluoride (PVDF) membrane containing octa chloropropyl polyhedral oligomeric silsesquioxane (POSS-(C3H6Cl)8) was prepared by electrospinning technique. The morphology and mechanical property of electrospun polymer separators (EPSs) were analyzed at first, then the electrochemical window and the charge/discharge cycle stability of Li/LiFePO4 cells were tested. Results show that the electrospun polymer separators have the preferable performance when the content of POSS-(C3H6Cl)8 is 10%. Under this condition, the fibers are very uniform and have better morphology. The tensile strength and broken elongation are increased by 106.4% and 27.2%, respectively. The ionic conductivity is 3.8×10-3 S/cm at room temperature, which is improved by 97.4% than that of pure PVDF separator. The electrochemical stability window of polymer film is 5.7 V. The Li-ion batteries assembled with EPSs have superior cycle stability and rate capability.",

keywords = "Electrospinning, Li-ion battery, Polyvinylidene fluoride, POSS-(CHCl)",

author = "Jingyu Ma and Kun Sun and Xiaoyan Ma and Fang Chen and Yi Liu and Kaiqi Yang",

year = "2018",

month = jun,

day = "1",

doi = "10.16865/j.cnki.1000-7555.2018.06.009",

language = "繁体中文",

volume = "34",

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T1 - 静电纺丝法制备POSS-(C3H6Cl)8复合聚偏氟乙烯聚合物隔膜的结构与性能

AU - Ma, Jingyu

AU - Sun, Kun

AU - Ma, Xiaoyan

AU - Chen, Fang

AU - Liu, Yi

AU - Yang, Kaiqi

PY - 2018/6/1

Y1 - 2018/6/1

N2 - To improve the safety of Li-ion batteries, the polyvinylidene fluoride (PVDF) membrane containing octa chloropropyl polyhedral oligomeric silsesquioxane (POSS-(C3H6Cl)8) was prepared by electrospinning technique. The morphology and mechanical property of electrospun polymer separators (EPSs) were analyzed at first, then the electrochemical window and the charge/discharge cycle stability of Li/LiFePO4 cells were tested. Results show that the electrospun polymer separators have the preferable performance when the content of POSS-(C3H6Cl)8 is 10%. Under this condition, the fibers are very uniform and have better morphology. The tensile strength and broken elongation are increased by 106.4% and 27.2%, respectively. The ionic conductivity is 3.8×10-3 S/cm at room temperature, which is improved by 97.4% than that of pure PVDF separator. The electrochemical stability window of polymer film is 5.7 V. The Li-ion batteries assembled with EPSs have superior cycle stability and rate capability.

AB - To improve the safety of Li-ion batteries, the polyvinylidene fluoride (PVDF) membrane containing octa chloropropyl polyhedral oligomeric silsesquioxane (POSS-(C3H6Cl)8) was prepared by electrospinning technique. The morphology and mechanical property of electrospun polymer separators (EPSs) were analyzed at first, then the electrochemical window and the charge/discharge cycle stability of Li/LiFePO4 cells were tested. Results show that the electrospun polymer separators have the preferable performance when the content of POSS-(C3H6Cl)8 is 10%. Under this condition, the fibers are very uniform and have better morphology. The tensile strength and broken elongation are increased by 106.4% and 27.2%, respectively. The ionic conductivity is 3.8×10-3 S/cm at room temperature, which is improved by 97.4% than that of pure PVDF separator. The electrochemical stability window of polymer film is 5.7 V. The Li-ion batteries assembled with EPSs have superior cycle stability and rate capability.

KW - Electrospinning

KW - Li-ion battery

KW - Polyvinylidene fluoride

KW - POSS-(CHCl)

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静电纺丝法制备POSS-(C₃H₆Cl)₈复合聚偏氟乙烯聚合物隔膜的结构与性能

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