Preparation and performance of p(OPal-MMA)/PVDF blend polymer membrane via phase-inversion process for lithium-ion batteries

被引：22

作者：

Tian, Lanlan ^{[1
,2
,3
,4
,5
]}

Wang, Mengkun ^{[1
,2
,3
,4
]}

Xiong, Lian ^{[1
,2
,3
,4
]}

Huang, Chao ^{[1
,2
,3
,4
]}

Guo, Haijun ^{[1
,2
,3
,4
]}

Yao, Shimiao ^{[1
,2
,3
,4
]}

Zhang, Hairong ^{[1
,2
,3
,4
]}

Chen, Xinde ^{[1
,2
,3
,4
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China

[2] Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China

[3] Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China

[4] Chinese Acad Sci, R&D Ctr Xuyi Attapulgite Appl Technol, Guangzhou Inst Energy Convers, Xuyi 211700, Peoples R China

[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2019年 / 839卷

关键词：

Gel polymer electrolyte; Palygorskite; Lithium ion battery; Cycle performance; POLYHEDRAL OLIGOMERIC SILSESQUIOXANE; MICROPOROUS MEMBRANES; ELECTROLYTE; GEL; COMPOSITE; SEPARATION; CONDUCTIVITY; PALYGORSKITE; LIQUID;

D O I：

10.1016/j.jelechem.2019.03.034

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Poly (methyl methacrylate) (PMMA) based gel electrolyte has excellent chemical stability and low interfacial resistance but its mechanical strength is poor. In this study, organic palygorskite modified PMMA (p(OPal-MMA)/poly(vinylidene fluoride)) (PVDF) blend based electrolyte membrane was prepared via phase inversion casting technique. The physical and electrochemical properties of the blend membrane were investigated by XRD, SEM, tensile test and electrochemistry workstation. The results showed that PVDF can significantly improve the mechanical strength. The crystal phase of PVDF disappeared after blending. The porosity and ionic conductivity of the p(OPal-MMA)/PVDF membrane was 57.73% and 4.93 x 10(-3) S/cm respectively. The electrochemical stability window of Li/gel B-PVDF electrolyte/SS cell was stable up to 4.7 V (vs. Li+ /Li), and the cell of Li/gel B-PVDF 43% electrolyte/LiFePO4 exhibited good cycling performance and the Coulombic efficiency was maintained above 98.5% during all the cycling process.

引用

页码：264 / 273

页数：10

共 43 条

[1] Preparation and characterization of Polyvinylidene fluoride/Octaphenyl-Polyhedral oligomeric silsesquioxane hybrid Lithium-ion battery separators by electrospinning [J].