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Updated: Dec 25, 2025
Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Highly pseudocapacitive metal-organic framework derived carbon skeleton supported Fe-Ti-O nanotablets as an anode
1Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, School of Environmental and Energy Engineering, Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, P.R. China. zhanglj1997@bjut.edu.cn.
Abstract:
A facile and effective method to fabricate highly pseudocapacitive electrodes of Fe-Ti-O@C has been proposed here. In this strategy, FeOOH crystals were firstly grown uniformly on the surface of Ti-based MOF (MIL-125) tablet substrates through a solution immersion method, and then converted to uniform carbon supported Fe-Ti-O composites by calcination under argon. The obtained Fe-Ti-O@C composites were first utilized as an efficient anode for lithium ion batteries with a high reversible capacity of 988 mA h g-1 after 160 cycles at 200 mA g-1. Such a superior lithium storage performance may be due to the synergistic effect of the Fe3O4 nanoparticles with a high capacity, FeTiO3 nanocomposites with a nearly stable structure during the Li+ insertion/removal process, and the conductive carbon skeleton with a large surface area and porous structure. This work represents an important step forward in the fabrication of MOF-derived hybrids and enables transition metal oxides (TMOs) to have potential applications in energy storage systems.
