Mechanical characterisation of a structural battery electrolyte
Journal article, 2024

Structural battery composites require a structural electrolyte to work. The structural battery electrolyte has a bicontinuous microstructure which enables its dual roles: mechanical load transfer and ion transport between the electrodes. These structural electrolytes are difficult to characterise mechanically via bulk tests. For this reason, no extensive characterisation of the mechanical properties of the structural battery electrolyte has been performed
to date. In this study, we highlight the many challenges of these types of tests, including the complexity of sample manufacturing, preparation and testing. We further demonstrate a method to prepare test samples and to perform mechanical tests on the structural battery electrolyte. The executed test campaign provides measures of Young’s modulus (approximately 412 MPa) and Poisson’s ratio (0.34), as well as tensile (4.85 MPa) and
compressive strength (32.66 MPa) and strain to failure (2.49 % and 28.11 % in tension and compression, respectively). In addition, cure shrinkage is investigated and found insignificant. These results are crucial for the further development of structural battery composites as they allow for accurate prediction of their internal stress states.

Multifunctionality

Structural battery electrolyte

Mechanical characterisation

Author

Ruben Tavano

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Michele Spagnol

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Nawres Al-Ramanhi

Luleå University of Technology

Roberts Joffe

Luleå University of Technology

Johanna Xu

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Leif Asp

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Polymer

0032-3861 (ISSN)

Vol. 312 127646

Multifunctional carbon fibres for battery electrodes

Office of Naval Research (N62909-22-1-2037), 2022-06-01 -- 2025-05-31.

Realising Structural Battery Composites

European Office of Aerospace Research and Development (EOARD) (FA8655-21-1-7038), 2021-08-01 -- 2024-07-31.

2D material-based technology for industrial applications (2D-TECH)

VINNOVA (2019-00068), 2020-05-01 -- 2024-12-31.

GKN Aerospace Sweden (2D-tech), 2021-01-01 -- 2024-12-31.

Driving Forces

Sustainable development

Innovation and entrepreneurship

Subject Categories

Applied Mechanics

Infrastructure

Chalmers Materials Analysis Laboratory

Areas of Advance

Materials Science

DOI

10.1016/j.polymer.2024.127646

More information

Latest update

10/7/2024