Microstructure of Carbon Fibres for Multifunctional Composites: 3D Distribution and Configuration of Atoms
Licentiate thesis, 2021
Here synchrotron hard X-ray photoelectron spectroscopy and atom probe tomography are used to reveal the chemical states and three-dimensional distribution of atoms in commercial carbon fibres. This thesis presents the first ever guide for how to perform atom probe tomography on carbon fibres, and the first ever three-dimensional atomic reconstruction of a carbon fibre.
The results show that the chemical states and distribution of nitrogen heteroatoms in carbon fibres affect the electrochemical performance of the fibres. Carbon fibres performed electrochemically better with higher amount of nitrogen with pyridinic and pyrrolic configurations. Additionally, the nitrogen concentration varies throughout the carbon fibre, which may suggest that the electrochemical properties also vary throughout the carbon fibre. The knowledge provided by this thesis can lead to future carbon fibre designs with enhanced electrochemical performance for multifunctional applications.
multifunctional composites
microstructure
synchrotron hard X-ray photoelectron spectroscopy
carbon fibres
energy storage
atom probe tomography
heteroatoms
Author
Marcus Johansen
Chalmers, Industrial and Materials Science, Materials and manufacture
Mapping nitrogen heteroatoms in carbon fibres using atom probe tomography and photoelectron spectroscopy
Carbon,;Vol. 179(2021)p. 20-27
Journal article
Johansen, M, Liu, F, "Best practices for analysis of carbon fibres by atom probe tomography"
Towards multifunctional batteries – insights into carbon fibres in dynamic electrochemical and mechanical processes
Swedish Energy Agency (2018-004406), 2019-01-01 -- 2023-12-31.
Driving Forces
Sustainable development
Subject Categories
Materials Engineering
Paper, Pulp and Fiber Technology
Other Materials Engineering
Composite Science and Engineering
Areas of Advance
Transport
Energy
Materials Science
Infrastructure
Chalmers Materials Analysis Laboratory
Publisher
Chalmers
Gamma & Delta, Hörsalsvägen 7, Chalmers
Opponent: Prof. Dan Zenkert, Department of Engineering Mechanics, KTH Royal Institute of Technology, Sweden.