Quantifying mass transport during polarization in a Li Ion battery electrolyte by in situ 7Li NMR imaging
2012 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 134, no 36, 14654-14657 p.Article in journal (Refereed) Published
Poor mass transport in the electrolyte of Li ion batteries causes large performance losses in high-power applications such as vehicles, and the determination of transport properties under or near operating conditions is therefore important. We demonstrate that in situ 7Li NMR imaging in a battery electrolyte can directly capture the concentration gradients that arise when current is applied. From these, the salt diffusivity and Li + transport number are obtained within an electrochemical transport model. Because of the temporal, spatial, and chemical resolution it can provide, NMR imaging will be a versatile tool for evaluating electrochemical systems and methods.
Place, publisher, year, edition, pages
2012. Vol. 134, no 36, 14654-14657 p.
Electrolytes, Magnetic resonance imaging, Transport properties
IdentifiersURN: urn:nbn:se:kth:diva-103644DOI: 10.1021/ja305461jISI: 000308574800006ScopusID: 2-s2.0-84866398560OAI: oai:DiVA.org:kth-103644DiVA: diva2:561317
FunderSwedish Research CouncilStandUp
QC 201506242012-10-182012-10-172015-06-24Bibliographically approved