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Porous and non-porous micrometer-sized glass platelets as separators for lithium-ion batteries

Title data

Schadeck, Ulrich ; Kyrgyzbaev, Kanat ; Gerdes, Thorsten ; Willert-Porada, Monika ; Moos, Ralf:
Porous and non-porous micrometer-sized glass platelets as separators for lithium-ion batteries.
In: Journal of Membrane Science. Vol. 550 (15 March 2018) . - pp. 518-525.
ISSN 0376-7388
DOI: https://doi.org/10.1016/j.memsci.2017.10.061

Official URL: Volltext

Project information

Project financing: Bayerisches Staatsministerium für Wirtschaft, Infrastruktur, Verkehr und Technologie

Abstract in another language

Custom-made porous and non-porous micrometer-sized glass platelets made of phase-separating sodium borosilicate glass are used as a new type of separator for lithium-ion batteries with liquid electrolytes as a high-temperature stable alternative for polymer-based separators. The production process of glass platelets as well as the preparation of porous glass platelets by the so-called VYCOR®-process is described. The influence of the platelet morphology on the ionic conductivity in a non-aqueous battery electrolyte is shown. Porous glass platelets with a porosity of 52% show an ionic conductivity of 5.5 mS cm⁻¹ in a standard non-aqueous lithium-ion battery electrolyte. The battery performance of porous and non-porous glass platelets as a separator is tested in a graphite/lithium iron phosphate full-cell configuration and is compared to state-of-the-art polymer-based separators. Charge/discharge tests are performed at different current rates. The results clearly show that glass platelets perform excellently with high charge/discharge currents up to a 10 C rate and capacity retention at a 1 C rate compared to polymer based separators.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Materials Processing
Faculties > Faculty of Engineering Science > Ehemalige Professoren > Chair Materials Processing - Univ.-Prof. Dr. Monika Willert-Porada
Faculties > Faculty of Engineering Science > Chair Functional Materials
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Units
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Graduate Schools
Graduate Schools > TAO-Graduiertenkolleg Energieautarke Gebäude
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 15 Feb 2018 11:22
Last Modified: 14 Mar 2019 07:36
URI: https://eref.uni-bayreuth.de/id/eprint/42289