Tailoring Particle Size and Morphology to Enhance Performance and Safety of Glass-Based Battery Separators

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00009393
URN to cite this document: urn:nbn:de:bvb:703-epub-9393-2

Title data

Rank, Philipp ; Müllner, Sebastian ; Gerdes, Thorsten ; Roth, Christina:
Tailoring Particle Size and Morphology to Enhance Performance and Safety of Glass-Based Battery Separators.
In: Batteries. Vol. 11 (2025) Issue 11 . - 388.
ISSN 2313-0105
DOI der Verlagsversion: https://doi.org/10.3390/batteries11110388

	Format: PDF Name: batteries-11-00388.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Project information

Project title:	Project's official title Project's id GlasSeLIB – Glas-Separatoren für Lithium-Ionen-Batterien No information Open Access Publizieren No information
Project financing:	Bayerische Forschungsstiftung

Abstract

The thermal characteristics and surface properties of battery separators are commonly modified by the incorporation of inorganic particles into a polymeric matrix material. At present, the particles employed are predominantly of an arbitrary shape. Herein, we demonstrate significantly improved battery safety features using a glass-based separator consisting of platelet-shaped particles. Glass is selected due to its temperature stability and the freedom of design that it offers when particles are formed directly from the melt. The influence of the particles’ aspect ratio and layer stacking on the electrochemical properties was analyzed, and a parametric study of glass particle layers as function of edge length and thickness was conducted. Particles with an excessively high aspect ratio impede the Li+ diffusion pathway, thereby negatively affecting the performance and stability of the battery cell. Conversely, if the aspect ratio is insufficient, a deterioration in cell performance can be observed, particularly at elevated C-rates, due to the high specific surface area of the particles. Hence, the utilization of particles with a moderate aspect ratio of about 10 and a thickness of around 1 µm is proposed to ensure optimum performance.

Further data

Item Type:	Article in a journal
Keywords:	lithium-ion batteries; separator; Si anode; glass particles; safety features
DDC Subjects:	500 Science > 540 Chemistry 600 Technology, medicine, applied sciences > 620 Engineering
Institutions of the University:	Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Electrochemical Process Engineering Faculties > Faculty of Engineering Science > Chair Electrochemical Process Engineering > Chair Electrochemical Process Engineering - Univ.-Prof. Dr.-Ing. Christina Roth Research Institutions > Central research institutes > Bayerisches Zentrum für Batterietechnik - BayBatt Research Institutions > Research Units > Keylab Glass Technology Research Institutions Research Institutions > Central research institutes Research Institutions > Research Units
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-9393-2
Date Deposited:	09 Jun 2026 11:46
Last Modified:	09 Jun 2026 11:47
URI:	https://epub.uni-bayreuth.de/id/eprint/9393

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