%0 Journal Article %T Electrochemical reactivity of In-Pb solid solution as a negative electrode for rechargeable Mg-ion batteries %+ Laboratoire d'Etudes des Eléments Légers (LEEL - UMR 3685) %+ Laboratoire Archéomatériaux et Prévision de l'Altération (LAPA - UMR 3685) %A Blondeau, Lucie %A Surblé, Suzy %A Foy, Eddy %A Khodja, Hicham %A Gauthier, Magali %< avec comité de lecture %@ 2095-4956 %J Journal of Energy Chemistry %I Elsevier %V 55 %P 124-128 %8 2020-07-09 %D 2020 %R 10.1016/j.jechem.2020.07.004 %Z Chemical Sciences/Material chemistryJournal articles %X A composite In-Pb:carbon was successfully synthetized by a two-step mechanochemical synthesis in order to obtain an adequate particles size and structure to investigate the electrochemical reactivity of the In-Pb solid solution towards Mg. A potential synergetic coupling of electroactive elements In and Pb was examined using electrochemical and ex situ X-ray diffraction analyses. The potential profile of the solid solution indicates the formation of Mg2Pb and MgIn. However, the diffraction study suggests a peculiar electrochemically-driven amorphization of MgIn during the magnesiation, in strong contrast to MgIn crystallization in In-based and InBi-based electrodes reported in the literature. Combining In and Pb favors the amorphization of MgIn and a high first magnesiation capacity of about 550 mAh g−1, but is thereafter detrimental to the material’s reversibility. These results emphasize the possible influence of electrochemically-driven amorphization and crystallization processes on electrochemical performance of battery materials. %G English %2 https://cea.hal.science/cea-02907955/document %2 https://cea.hal.science/cea-02907955/file/S2095495620304745.pdf %L cea-02907955 %U https://cea.hal.science/cea-02907955 %~ CEA %~ CNRS %~ PUBNIMBE %~ DSV %~ INC-CNRS %~ IRAMIS-NIMBE %~ CEA-UPSAY %~ UNIV-PARIS-SACLAY %~ CEA-DRF %~ TEST-HALCNRS %~ UNIVERSITE-PARIS-SACLAY %~ ANR %~ GS-ENGINEERING %~ IRAMIS %~ GS-CHIMIE %~ GS-HUMANITIES-HERITAGE %~ GS-PHYSIQUE %~ INSTITUT-SCIENCES-LUMIERE %~ ELSEVIER %~ TEST2-HALCNRS