Sulfurized Two-Dimensional Conductive Metal-Organic Framework as a High-Performance Cathode Material for Rechargeable Mg Batteries.

Autor: Mu Y; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA., Nyakuchena J; Department of Chemistry, Marquette University, Milwaukee, Wisconsin, 53201, USA., Wang Y; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA., Wilkes JR; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA., Luo T; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA., Goldstein M; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA., Elander B; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA., Mohanty U; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA., Bao JL; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA., Huang J; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA.; Department of Chemistry, Marquette University, Milwaukee, Wisconsin, 53201, USA., Wang D; Department of Chemistry, Merkert Chemistry Center, Boston College Chestnut Hill, Massachusetts, 02467, USA.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Oct 07; Vol. 63 (41), pp. e202409286. Date of Electronic Publication: 2024 Sep 05.
DOI: 10.1002/anie.202409286
Abstrakt: Rechargeable Mg batteries are a promising energy storage technology to overcome the limitations inherent to Li ion batteries. A critical challenge in advancing Mg batteries is the lack of suitable cathode materials. In this work, we report a cathode design that incorporates S functionality into two-dimensional metal-organic-frameworks (2D-MOFs). This new cathode material enables good Mg 2+ storage capacity and outstanding cyclability. It was found that upon the initial Mg 2+ insertion and disinsertion, there is an apparent structural transformation that crumbles the layered 2D framework, leading to amorphization. The resulting material serves as the active material to host Mg 2+ through reduction and/or oxidation of S and, to a limited extent, O. The reversible nature of S and O redox chemistry was confirmed by spectroscopic characterizations and validated by density functional calculations. Importantly, during the Mg 2+ insertion and disinsertion process, the 2D nature of the framework was maintained, which plays a key role in enabling the high reversibility of the MOF cathode.
(© 2024 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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