The Behavior of the Intercalant AlCl_4 Anion during the Formation of Graphite Intercalation Compound: An X-ray Absorption Fine Structure Study

This work aims to study the insertion of AlCl_4^- anion in the crystalline structure of oriented pyrolytic graphite (PG) at the point of view of the anion itself. The electronic and atomic structures of the anion at different intercalation stages are studied. In particular double-edge (bicolor) X-ra...

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Bibliographic Details
Published in:arXiv.org 2024-02
Main Authors: Greco, Giorgia, Elia, Giuseppe Antonio, Kayser, Yves, Beckhoff, Burkhard, Perestjuk, Marko, Raoux, Simone, Hahn, Rober
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Anions
Fine structure
Intercalation
Intercalation compounds
Pyrolytic graphite
X ray absorption
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Summary:This work aims to study the insertion of AlCl_4^- anion in the crystalline structure of oriented pyrolytic graphite (PG) at the point of view of the anion itself. The electronic and atomic structures of the anion at different intercalation stages are studied. In particular double-edge (bicolor) X-ray absorption spectroscopy at the Al and Cl K-edges is carried out, highlighting a contraction of the anion bonding at the highest intercalation degree obtained electrochemically (stage 3), while the electronic population changes for both the edges upon cycle.
ISSN:2331-8422
DOI:10.48550/arxiv.2402.12873