Thin Fiber-Based Separators for High-Rate Sodium Ion Batteries

被引：28

作者：

Coustan, Laura ^{[1
,3
]}

Tarascon, Jean-Marie ^{[2
,3
,4
]}

Laberty-Robert, Christel ^{[1
,3
]}

机构：

[1] Sorbonne Univ, Coll France, CNRS, Lab Chim Matiere Condensee Paris CMCP, 4 Pl Jussieu, F-75005 Paris, France

[2] Coll France, CNRS, UMR 8260, Chim Solide & Energie, 11 Pl Marcelin Berthelot, F-75005 Paris, France

[3] FR CNRS 3459, RS2E, F-80039 Amiens, France

[4] UPMC Paris 06, Sorbonne Univ, 4 Pl Jussieu, F-75005 Paris, France

来源：

ACS APPLIED ENERGY MATERIALS | 2019年 / 2卷 / 12期

关键词：

Na battery; separators; electrospinning; hybrid organic - inorganic; safety; ELECTROLYTES; CHALLENGES; MEMBRANES;

D O I：

10.1021/acsaem.9b01821

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A thermally resistant, high-performance electrospun hybrid PVDF-HFP/SiO2 fiber-based separator (EHS) has been successfully fabricated and its performance for sodium ion batteries explored. The EHS, containing 40% of its weight as SiO2, is made of intermingled nonwoven hybrid organic (PVDF-HFP) inorganic (SiO2) fibers (similar to 145 nm) to produce a highly porous network (similar to 85% in volume). This EHS separator shows an important electrolyte uptake with nearly no swelling, and an interface stability comparable to today's commercialized Al2O3-coated PP and cellulose separators. Full NVPF//NaPF6-EC:PC//hard carbon cells using EHS show low ionic resistance, excellent rate capability, cycling retention, and longer short-circuit time.

引用

收藏

页码：8369 / 8375

页数：13

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