SiO2/polyacrylonitrile membranes via centrifugal spinning as a separator for Li-ion batteries

Meltem Yanilmaz; Yao Lu; Ying Li; Xiangwu Zhang

doi:10.1016/j.jpowsour.2014.10.015

SiO₂/polyacrylonitrile membranes via centrifugal spinning as a separator for Li-ion batteries

Meltem Yanilmaz, Yao Lu, Ying Li, Xiangwu Zhang^*

^*Corresponding author for this work

North Carolina State University

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

87 Citations (Scopus)

Abstract

Centrifugal spinning is a fast, cost-effective and safe alternative to the electrospinning technique, which is commonly used for making fiber-based separator membranes. In this work, SiO₂/polyacrylonitrile (PAN) membranes were produced by using centrifugal spinning and they were characterized by using different electrochemical techniques for use as separators in Li-ion batteries. SiO₂/PAN membranes exhibited good wettability and high ionic conductivity due to their highly porous fibrous structure. Compared with commercial microporous polyolefin membranes, SiO₂/PAN membranes had larger liquid electrolyte uptake, higher electrochemical oxidation limit, and lower interfacial resistance with lithium. SiO₂/PAN membrane separators were assembled into lithium/lithium iron phosphate cells and these cells delivered high capacities and exhibited good cycling performance at room temperature. In addition, cells using SiO₂/PAN membranes showed superior C-rate performance compared to those using microporous PP membrane.

Original language	English
Pages (from-to)	1114-1119
Number of pages	6
Journal	Journal of Power Sources
Volume	273
DOIs	https://doi.org/10.1016/j.jpowsour.2014.10.015
Publication status	Published - 1 Jan 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.

Funding

This research was supported by National Science Foundation under Award Number CMMI-1231287 , the Advanced Transportation Energy Center and the ERC Program of the National Science Foundation under Award Number EEC-08212121 .

Funders	Funder number
Advanced Transportation Energy Center
National Science Foundation	CMMI-1231287
Engineering Research Centers	EEC-08212121

Keywords

Battery separator
Centrifugal spinning
Electrospinning
Polyacrylonitrile
Silica

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2014.10.015

Cite this

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title = "SiO2/polyacrylonitrile membranes via centrifugal spinning as a separator for Li-ion batteries",

abstract = "Centrifugal spinning is a fast, cost-effective and safe alternative to the electrospinning technique, which is commonly used for making fiber-based separator membranes. In this work, SiO2/polyacrylonitrile (PAN) membranes were produced by using centrifugal spinning and they were characterized by using different electrochemical techniques for use as separators in Li-ion batteries. SiO2/PAN membranes exhibited good wettability and high ionic conductivity due to their highly porous fibrous structure. Compared with commercial microporous polyolefin membranes, SiO2/PAN membranes had larger liquid electrolyte uptake, higher electrochemical oxidation limit, and lower interfacial resistance with lithium. SiO2/PAN membrane separators were assembled into lithium/lithium iron phosphate cells and these cells delivered high capacities and exhibited good cycling performance at room temperature. In addition, cells using SiO2/PAN membranes showed superior C-rate performance compared to those using microporous PP membrane.",

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AU - Lu, Yao

AU - Li, Ying

AU - Zhang, Xiangwu

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AB - Centrifugal spinning is a fast, cost-effective and safe alternative to the electrospinning technique, which is commonly used for making fiber-based separator membranes. In this work, SiO2/polyacrylonitrile (PAN) membranes were produced by using centrifugal spinning and they were characterized by using different electrochemical techniques for use as separators in Li-ion batteries. SiO2/PAN membranes exhibited good wettability and high ionic conductivity due to their highly porous fibrous structure. Compared with commercial microporous polyolefin membranes, SiO2/PAN membranes had larger liquid electrolyte uptake, higher electrochemical oxidation limit, and lower interfacial resistance with lithium. SiO2/PAN membrane separators were assembled into lithium/lithium iron phosphate cells and these cells delivered high capacities and exhibited good cycling performance at room temperature. In addition, cells using SiO2/PAN membranes showed superior C-rate performance compared to those using microporous PP membrane.

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