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Cathode Electrolyte Interphase (CEI) Endows Mo<subscript>6</subscript>S<subscript>8</subscript> with Fast Interfacial Magnesium‐Ion Transfer Kinetics.
In: Angewandte Chemie, Jg. 135 (2023-03-27), Heft 14, S. 1-7
Online
academicJournal
Zugriff:
Magnesium (Mg) metal secondary batteries have attracted much attention for their high safety and high energy density characteristics. However, the significant issues of the cathode/electrolyte interphase (CEI) in Mg batteries are still being ignored. In this work, a significant CEI layer on the typical Mo6S8 cathode surface has been unprecedentedly constructed through the oxidation of the chloride‐free magnesium tetrakis(hexafluoroisopropyloxy)borate (Mg[B(hfip)4]2) salt under a proper charge cut‐off voltage condition. The CEI has been identified to contain BxOy effective species originating from the oxidation of [B(hfip)4]− anion. It is confirmed that the BxOy species is beneficial to the desolvation of solvated Mg2+, speeding up the interfacial Mg2+ transfer kinetics, thereby improving the Mg2+‐storage capability of Mo6S8 host. The firstly reported CEI in Mg batteries will give deeper insights into the interface issues in multivalent electrochemical systems. [ABSTRACT FROM AUTHOR]
Titel: |
Cathode Electrolyte Interphase (CEI) Endows Mo<subscript>6</subscript>S<subscript>8</subscript> with Fast Interfacial Magnesium‐Ion Transfer Kinetics.
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Autor/in / Beteiligte Person: | Wang, Dingming ; Du, Xiaofan ; Chen, Guansheng ; Song, Fuchen ; Du, Jiahao ; Zhao, Jingwen ; Ma, Yinglei ; Wang, Jia ; Du, Aobing ; Cui, Zili ; Zhou, Xinhong ; Cui, Guanglei |
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Zeitschrift: | Angewandte Chemie, Jg. 135 (2023-03-27), Heft 14, S. 1-7 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 0044-8249 (print) |
DOI: | 10.1002/ange.202217709 |
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