Details

Autor(en) / Beteiligte

• Greco, Giorgia
• Elia, Giuseppe Antonio
• Hermida‐Merino, Daniel
• Hahn, Robert
• Raoux, Simone

Titel

A Direct Real‐Time Observation of Anion Intercalation in Graphite Process and Its Fully Reversibility by SAXS/WAXS Techniques

Ist Teil von

• Small methods, 2023-06, Vol.7 (6), p.e2201633-n/a

Ort / Verlag

Germany

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The process of anion intercalation in graphite and its reversibility plays a crucial role in the next generation energy‐storage devices. Herein the reaction mechanism of the aluminum graphite dual ion cell by operando X‐ray scattering from small angles to wide angles is investigated. The staging behavior of the graphite intercalation compound (GIC) formation, its phase transitions, and its reversible process are observed for the first time by directly measuring the repeated intercalation distance, along with the microporosity of the cathode graphite. The investigation demonstrates complete reversibility of the electrochemical intercalation process, alongside nano‐ and micro‐structural reorganization of natural graphite induced by intercalation. This work represents a new insight into thermodynamic aspects taking place during intermediate phase transitions in the GIC formation. The in‐depth investigation of the anion intercalation process in graphite electrodes through operando X‐ray scattering from small to wide angles evidenced in detail the staging behaviour of graphite intercalation compound formation, its phase transitions and nano‐ and micro‐structural reorganization.