DataVXACS Applied Energy MaterialsPaper
journal article·2020-05-26Open access

X-ray Nanocomputed Tomography in Zernike Phase Contrast for Studying 3D Morphology of Li–O2 Battery Electrode

Zeliang Su, Vincent De Andrade, Sorina Cretu, Yinghui Yin, Michael J. Wojcik, Alejandro A. Franco, Arnaud Demortière

ACS Applied Energy Materials· Volume 3· Issue 5
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Source abstract

Abstract

We investigated the lithium peroxide (Li2O2) and pore size distribution in lithium–O2 battery electrodes at different states of charge using transmission X-ray microscopy coupled with Zernike phase contrast to carry out nanocomputed tomography. We report that such a technique enables us, at the nanoscale, to distinguish light elements such as carbon and Li2O2 in Li–O2 battery cathode electrodes. We verified by wave-propagation simulation that this approach efficiently improves the contrast of images in comparison with pure absorption. The Li2O2 distribution and thickness, interphases, and pore network are visualized and quantified, giving a valuable insight into our cathode architecture. From this 3D analysis, we highlight modifications of the air-cathode morphology and the Li2O2 spatial organization as well as their potential implication in terms of carbon surface passivation and pore-clogging. After the full recharge process, this technique can also reveal the spatial distribution of the residual Li2O2 and other byproducts.
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Research context

Energy storageNanomaterials

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratoire de Réactivité et Chimie des Solides (LRCS), CNRS UMR 7314, Université de Picardie Jules Verne, Hub de l’Energie, 15 Rue Baudelocque, 80039 Amiens Cedex, France

Réseau sur le Stockage Electrochimique de l’Energie (RS2E), CNRS FR 3459, Hub de l’Energie, 15 Rue Baudelocque, 80039 Amiens Cedex, France

Advanced Photon Sources Beam Line, Argonne National Laboratory, Building 401/Rm A4115, 9700 S. Cass Avenue, Argonne, Illinois 60439, United States

School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore

Institut Universitaire de France, 101 Boulevard Saint Michel, 75005 Paris, France

ALISTORE-European Research Institute, CNRS FR 3104, Hub de l’Energie, 15 Rue Baudelocque, 80039 Amiens Cedex, France

Funding

Minist?re de l'Enseignement sup?rieur, de la Recherche et de l'Innovation · European Regional Development Fund · Institut Universitaire de France

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