Effect of lithiation on the elastic moduli of carbon fibres
Artikel i vetenskaplig tidskrift, 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

Författare

Shanghong Duan

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Anand Harihara Subramonia Iyer

Chalmers, Fysik, Mikrostrukturfysik

David Carlstedt

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Florian Rittweger

Hochschule für Angewandte Wissenschaften Hamburg

Andrew Sharits

Air Force Research Laboratory

UES Inc.

Calvin Maddox

Air Force Research Laboratory

UES Inc.

Karl-Ragmar Riemschneider

Hochschule für Angewandte Wissenschaften Hamburg

David Mollenhauer

Air Force Research Laboratory

Magnus Hörnqvist Colliander

Chalmers, Fysik, Mikrostrukturfysik

Fang Liu

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Leif Asp

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Carbon

0008-6223 (ISSN)

Vol. 185 234-241

SORCERER

Europeiska kommissionen (EU) (738085), 2017-02-01 -- 2020-02-28.

Strukturella batterikompositer för viktlös energilagring

Rymdstyrelsen (2020-00256), 2021-01-01 -- 2023-12-31.

Utveckling av strukturella batterier

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

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Chalmers materialanalyslaboratorium

DOI

10.1016/j.carbon.2021.09.037

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Senast uppdaterat

2021-10-06