Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Multifunctional Composite Materials using Lithium Ion Functionalization
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.ORCID iD: 0000-0002-9744-4550
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.ORCID iD: 0000-0001-9203-9313
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
2015 (English)In: International Conference on Composite Materials 20, ICCM-20, Copenhagen, Denmark, 2015, Copenhagen: ICCM , 2015Conference paper, Published paper (Other academic)
Abstract [en]

In this paper we show how one can functionalise carbon fibres by using them as an electrochemicalelectrode. The electrochemical process is the same as in a lithium-ion battery cell so that the carbonfibres act as an active electrode in future structural battery concepts. The functionalization of carbonfibres using lithium ion intercalation reveals three novel and interesting possibilities enabling carbonfibres composites to obtain several other multi-functionalities. These are strain sensing, actuation andenergy harvesting.We have found that by intercalating lithium ions into the nano-/micro-structure of carbon fibres apiezo-electrochemical effect is revealed. This is observed as a change in the potential of the carbon fibreelectrode when applying a mechanical load. The response is direct and easily measurable being in theorder of several mV. This can be utilised as a strain sensor since there is a relation between the potentialchange and the strain in the carbon fibre.Secondly, we have measured substantial axial expansion of carbon fibres when intercalated withlithium ions. The strain measured is as high as 1%. Since the stiffness of carbon fibres is very high, thiscorresponds to very large forces. This can be used for actuation or morphing.Thirdly, the newly found piezo-electrochemical effect can be used to harvest energy by convertingmechanical work to electrical energy. Applying a tensile force to carbon fibre bundles used as Liintercalatingelectrodes results in a response of the electrode potential of a few mV which allows, at lowcharge rates, discharge at higher electrode potential than at charge. More electrical energy is therebyreleased from the cell at discharge than provided at charge, harvesting energy from the mechanical workof the applied force.

Place, publisher, year, edition, pages
Copenhagen: ICCM , 2015.
Keyword [en]
carbon fibres, sensing, acuation, energy harvesting, piezo-electrochemical
National Category
Composite Science and Engineering
Research subject
Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-171868OAI: oai:DiVA.org:kth-171868DiVA: diva2:844803
Conference
International Conference on Composite Materials 20, ICCM-20, Copenhagen, Denmark, 19-24 July 2015
Funder
Swedish Research Council, 621-2012-3764
Note

QC 20150828

Available from: 2015-08-09 Created: 2015-08-09 Last updated: 2015-08-28Bibliographically approved

Open Access in DiVA

fulltext(295 kB)91 downloads
File information
File name FULLTEXT01.pdfFile size 295 kBChecksum SHA-512
30e1e39ccfc871228c5b0bfa3a5d3355d47decf5f09b314d8279ef8216a4694c151b8ea77ee32f3897f953b711e4ba9db36f1a96f55dfe1617c6324ebc59b863
Type fulltextMimetype application/pdf

Other links

Conference website

Authority records BETA

Zenkert, DanLindbergh, Göran

Search in DiVA

By author/editor
Zenkert, DanJacques, EricLindbergh, GöranLeijonmarck, Simon
By organisation
Lightweight StructuresApplied Electrochemistry
Composite Science and Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 91 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 129 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf