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Journal articles
Electrochemical reactivity of In-Pb solid solution as a negative electrode for rechargeable Mg-ion batteries
Abstract : 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.
https://hal-cea.archives-ouvertes.fr/cea-02907955
Contributor : Serge Palacin <>
Submitted on : Tuesday, July 28, 2020 - 9:13:48 AM
Last modification on : Friday, March 5, 2021 - 3:11:28 PM
Contributor : Serge Palacin <>
Submitted on : Tuesday, July 28, 2020 - 9:13:48 AM
Last modification on : Friday, March 5, 2021 - 3:11:28 PM