Mapping nitrogen heteroatoms in carbon fibres using atom probe tomography and photoelectron spectroscopy
Artikel i vetenskaplig tidskrift, 2021

Carbon fibres show great potential as multifunctional negative electrode for novel structural battery composites – a rechargeable electrochemical cell with structural function. The electrochemical performance of carbon materials can be enhanced with nitrogen heteroatoms, which conveniently are inherent in polyacrylonitrile (PAN)-based carbon fibres. However, it is not fully understood how the electrochemical performance is governed by microstructure and composition of the carbon fibres, particularly the distribution and chemical states of nitrogen heteroatoms. Here we reveal the atom-by-atom three-dimensional spatial distribution and the chemical states of nitrogen in three PAN-carbon fibre types (M60J, T800 and IMS65), using atom probe tomography (APT) and synchrotron hard X-ray photoelectron spectroscopy (HAXPES), and correlate the results to electrochemical performance. The findings pave the way for future tailoring of carbon fibre microstructure for multifunctional applications.

Synchrotron

Hard X-ray photoelectron spectroscopy

Electrochemical

Atom probe tomography

Multifunctional

Carbon fibres

Författare

Marcus Johansen

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Eric Tam

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Christoph Schlueter

Deutsches Elektronen-Synchrotron (DESY)

Leif Asp

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Fang Liu

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Carbon

0008-6223 (ISSN)

Vol. 179 20-27

Inverkan av mekaniska och elektrokemiska processer på kolfibrer i strukturella kompositbatterier

Energimyndigheten, 2019-01-01 -- 2023-12-31.

Drivkrafter

Hållbar utveckling

Ämneskategorier

Materialteknik

Pappers-, massa- och fiberteknik

Annan materialteknik

Kompositmaterial och -teknik

Styrkeområden

Transport

Energi

Materialvetenskap

Fundament

Grundläggande vetenskaper

Infrastruktur

Chalmers materialanalyslaboratorium

DOI

10.1016/j.carbon.2021.03.061

Mer information

Senast uppdaterat

2021-04-15