Piezo-electrochemical effect in lithium-intercalated carbon fibres
2013 (English)In: Electrochemistry communications, ISSN 1388-2481, E-ISSN 1873-1902, Vol. 35, 65-67 p.Article in journal (Refereed) Published
In this paper we have conducted experiments to investigate the coupling between electrochemical and mechanical properties of lithium (Li)-intercalating carbon fibres (CFs). The results show promising potential for new functionalities of CFs for electrochemical actuation, sensing and energy harvesting. Li-intercalation at 1 C-rate in CFs subjected to a constant tensile extension induced a free reversible longitudinal expansion strain of approximately 0.30% which can be used as mechanical actuation. Varying the tensile extension of lithiated CFs resulted in a piezoelectric response of the open-circuit potential, in the range of several mV, enabling strain sensing. If the electrical potential is kept constant during a tensile extension a piezo-electrochemical current response is found with about 50% mechanical to electrical energy conversion efficiency, enabling energy harvesting.
Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 35, 65-67 p.
Carbon fibres, Electrochemical actuation, Lithium intercalation, Piezo-electrochemical effect, Piezoelectric effect, Lithium-intercalated carbon, Longitudinal expansions, Mechanical actuations, Open-circuit potential, Piezoelectric response, Carbon fibers, Energy conversion, Energy harvesting, Intercalation, Mechanical properties, Piezoelectricity, Lithium
IdentifiersURN: urn:nbn:se:kth:diva-133822DOI: 10.1016/j.elecom.2013.07.040ISI: 000326428800017ScopusID: 2-s2.0-84882777828OAI: oai:DiVA.org:kth-133822DiVA: diva2:665291
FunderStandUpSwedish Foundation for Strategic Research , RMA08-0002Swedish Research Council, 621-2012-3764
QC 201311292013-11-192013-11-112015-05-22Bibliographically approved