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Type: Journal article
Title: A Robust Coin-Cell Design for In Situ Synchrotron-based X-Ray Powder Diffraction Analysis of Battery Materials
Author: Liang, G.
Hao, J.
D’Angelo, A.M.
Peterson, V.K.
Guo, Z.
Pang, W.K.
Citation: BATTERIES & SUPERCAPS, 2021; 4(2):380-384
Issue Date: 2021
ISSN: 2566-6223
Statement of
Gemeng Liang, Junnan Hao, Anita M. D’Angelo, Vanessa K. Peterson, Zaiping Guo, and Wei Kong Pang
Abstract: <jats:title>Abstract</jats:title><jats:p>Understanding structure/chemistry‐function relationships of active battery materials is crucial for designing higher‐performance batteries, with <jats:italic>in situ</jats:italic> synchrotron‐based X‐ray powder diffraction widely employed to gain this understanding. Such measurements cannot be performed using a conventional cell, with modifications necessary for the X‐ray diffraction measurement, which unfortunately compromises battery performance and stability. Consequently, these measurements may not be representative of the typical behaviour of active materials in unmodified cells, particularly under more extreme operating conditions, such as at high voltage. Herein, we report a low‐cost, simple, and robust coin‐cell design enabling representative and typical cell performance during <jats:italic>in situ</jats:italic> X‐ray powder diffraction measurements, which we demonstrate for the well‐known high‐voltage electrode material LiNi<jats:sub>0.5</jats:sub>Mn<jats:sub>1.5</jats:sub>O<jats:sub>4</jats:sub>. In addition to excellent cell stability at high voltage, the modified cell delivered an electrochemical response comparable to the standard 2032‐type coin cell. This work paves an efficient way for battery researchers to perform high‐quality <jats:italic>in situ</jats:italic> structural analysis with synchrotron X‐ray radiation and will enable further insight into complex electrochemical processes in batteries.</jats:p>
Keywords: In situ; coin cell design; high voltage; X-ray powder diffraction; structural analysis
Rights: © 2020 Wiley-VCH GmbH
DOI: 10.1002/batt.202000218
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Chemical Engineering publications

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