Synthesis and spectroscopic characterization of Fe3+-BDC metal organic framework as material for lithium ion batteries

Cesario Ajpi, Naviana Leiva, Anders Lundblad, Göran Lindbergh, Saul Cabrera

Research output: Contribution to journalArticlepeer-review

Abstract

This work presents synthesis and spectroscopic characterization of a new metal-organic framework (MOF). The compound Fe-BDC-DMF was synthetized by the solvothermal method and prepared via a reaction between FeCl3.6H2O and benzene-1,4-dicarboxylic acid (H2BDC) or terephthalic acid using N,N-dimethylformamide (DMF) as solvent. The powder was characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM) and infrared spectroscopy (IR) analysis. The electrochemical properties were investigated in a typical lithium-ion battery electrolyte by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charging and discharging. The synthetized Fe-BDC-DMF metal-organic framework (MOF) contains a mixture of three phases, identified by PXRD as: MOF-235, and MIL-53(Fe) monoclinic with C2/c and P21/c space groups. The structure of the Fe-BDC is built up from Fe3+ ions, terephalates (BDC) bridges and in-situ-generated DMF ligands. The electrochemical measurements conducted in the potential range of 0.5–3.5 V vs. Li+/Li0 show the voltage profiles of Fe-BDC and a plateau capacity of around 175 mAh/g.

Original languageEnglish
Article number134127
JournalJournal of Molecular Structure
Volume1272
DOIs
StatePublished - 15 Jan 2023

Bibliographical note

Funding Information:
This work is dedicated to the late Prof. Saul Cabrera. This work was supported by the SIDA (Swedish International Development Agency), KTH Royal Institute of Technology, UMSA (Universidad Mayor de San Andres) in collaboration with IIQ (Chemical Research Institute), Department of Inorganic Chemistry and Materials Science/Advanced Materials. The authors would also like to thank Alexander J. Smith for helping to improve the language of the article.

Funding Information:
Funding for this research was provided by: SIDA (Swedish International Development Agency); KTH Royal Institute of Technology, Department of Chemical Engineering, Applied Electrochemistry; UMSA Universidad Mayor de San Andres, Department of Inorganic Chemistry and Materials Science/Advanced Materials, IIQ Chemical Research Institute.

Publisher Copyright:
© 2022 The Author(s)

Keywords

  • Lithium-ion batteries
  • Metal organic frameworks
  • Structure

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