F-Doped Enhanced Dual Reduction Center Metal–Organic Framework for Aqueous Aluminum Ion Batteries

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2025-02-13 DOI:10.1021/acsmaterialslett.4c0267710.1021/acsmaterialslett.4c02677

Hanqing Gu, Zhibao Wang, Wenming Zhang* and Zhanyu Li*,

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Abstract

Metal–organic frameworks (MOFs) with characteristics of metal ion hosts and organic ligand guests show promising applications in aqueous aluminum ion batteries (AAIBs). However, the sluggish kinetics and poor stability have detrimental effects on their practical application. Herein, an F-doped manganese-based metal–organic framework (Mn-MOF-74) was synthesized via a hydrothermal method. Mn-MOF-74 provides additional redox sites. Due to the high electronegativity of F and the high bond energy of C–F, the F-doping strategy has successfully improved the kinetics and stability. Electrochemical analysis and density functional theory (DFT) calculations jointly demonstrate the activation process of Mn-MOF-74. In addition, the energy storage mechanism has been systematically investigated by ex situ characterization. The organic linker provides additional active sites in which C═O and C–O undergo reversible changes. This work provides not only a feasible way to improve cycling stability but also a deeper understanding of the reaction mechanism related to MOFs in AAIBs.

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.