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Poster: Operando X-Ray Diffraction of Lithium-Sulfur Batteries with Concurrent Resistance Measurement

Poster: Operando X-Ray Diffraction of Lithium-Sulfur Batteries with Concurrent Resistance Measurement

Presenter: Yu-Chuan Chien
Title: Operando X-Ray Diffraction of Lithium-Sulfur Batteries with Concurrent Resistance Measurement
Affiliation: Uppsala University

Abstract

In this work, a modification of a coin cell was designed to preserve the electrochemical equivalence of a Li-S cell made with an unmodified coin cell while allowing X-ray radiation passing through. This design enabled in-house operando XRD with simultaneous resistance measurement performed by the Intermittent Current Interruption (ICI) method. The ICI method rendered both time-independent resistance, which is a sum of solution and charge transfer resistance, and time-dependent resistance, which is linearly proportional to the coefficient of a Warburg element used in the equivalent circuit model of electrochemical impedance spectroscopy. With the combination of operando XRD and real-time resistance values, this study investigated the correlation between the precipitation of insulating solid sulfur species and the transport properties inside the porous carbon matrix of the positive electrode.

Full list of posters


Poster: Suppression of manganese dissolution from LiMn2O4 cathodes
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