Effect of lithiation on the elastic moduli of carbon fibres
Journal article, 2021

Carbon fibre electrodes can enable a solid-state battery to carry mechanical load as normal construction materials. The multifunctionality is promising for most lightweight applications. Like all electrode materials, both volume and elastic moduli of the carbon fibre electrodes change during battery cycling. Such changes jeopardize the mechanical integrity of the battery. Due to the challenging corrosion problem of the lithiated component in air, the effect of lithiation on the carbon fibre's elastic moduli has yet to be explored. Also, robust data on the expansion of carbon fibres from lithiation are lacking. In the present work, we demonstrate a method and perform tests of corrosion protected carbon fibres in scanning electron microscope. The volume, and longitudinal and transverse moduli of a carbon fibre at three states of lithiation are determined and compared. The transverse modulus of the lithiated fibre is found to be more than double that of the pristine and delithiated fibres.

Lithium-ion battery

Elastic modulus

Structural battery

Carbon fiber electrode

Volume expansion

Author

Shanghong Duan

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Anand Harihara Subramonia Iyer

Chalmers, Physics, Microstructure Physics

David Carlstedt

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Florian Rittweger

Hamburg University of Applied Sciences

Andrew Sharits

Air Force Research Laboratory

UES Inc.

Calvin Maddox

Air Force Research Laboratory

UES Inc.

Karl-Ragmar Riemschneider

Hamburg University of Applied Sciences

David Mollenhauer

Air Force Research Laboratory

Magnus Hörnqvist Colliander

Chalmers, Physics, Microstructure Physics

Fang Liu

Chalmers, Industrial and Materials Science, Materials and manufacture

Leif Asp

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Carbon

0008-6223 (ISSN)

Vol. 185 234-241

Structural pOweR CompositEs foR futurE civil aiRcraft (SORCERER)

European Commission (EC) (738085), 2017-02-01 -- 2020-02-28.

Structural battery composites for mass-less energy storage

Swedish National Space Board (2020-00256), 2021-01-01 -- 2023-12-31.

Realisation of structural battery composites

United States Air Force (USAF) (Award # FA8655-21-1-7038), 2021-09-01 -- 2024-08-31.

Subject Categories

Mechanical Engineering

Applied Mechanics

Materials Chemistry

Composite Science and Engineering

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance

Transport

Energy

Materials Science

Infrastructure

Chalmers Materials Analysis Laboratory

DOI

10.1016/j.carbon.2021.09.037

More information

Latest update

10/6/2021