Communication-7Li MRI unveils concentration dependent diffusion in polymer electrolyte batteries

S. Chandrashekar; Onyekachi Oparaji; Guang Yang; Daniel Hallinan

doi:10.1149/2.0681614jes

Communication-⁷Li MRI unveils concentration dependent diffusion in polymer electrolyte batteries

S. Chandrashekar, Onyekachi Oparaji, Guang Yang, Daniel Hallinan

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Magnetic resonance imaging (MRI) is a powerful technique that is non-invasive and non-destructive. We have extended the seminal use of ⁷Li MRI from lithium dendrites in liquid-electrolyte-based batteries to visualize concentration gradients in polymer electrolytes for lithium batteries. Detecting both spatial gradients and temporal changes of salt concentration is powerful because it allows direct quantification of transport parameters, such as the diffusion coefficient. In this work, we discovered that lithium salt diffusion in polymer electrolyte is concentration dependent.

Original language	English
Pages (from-to)	A2988-A2990
Journal	Journal of the Electrochemical Society
Volume	163
Issue number	14
DOIs	https://doi.org/10.1149/2.0681614jes
State	Published - 2016
Externally published	Yes

Funding

SC thanks W. W. Brey for helpful discussions. OO, GY, and DH acknowledge start-up funding from the Florida State University Office of Research and the FAMU-FSU College of Engineering. A portion of this work was performed at the National HighMagnetic Field Laboratory, which is supported by National Science Foundation Cooperative Agreement No. DMR-1157490 and the State of Florida.

Funders	Funder number
FAMU-FSU College of Engineering
Florida State University Office of Research
State of Florida
National Science Foundation	DMR-1157490

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Communication-⁷Li MRI unveils concentration dependent diffusion in polymer electrolyte batteries

Abstract

Funding

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