CrMIL-53 as a matrix for proton-conducting nanocomposites based on CsH5(PO4)2

Valentina Ponomareva, Konstantin Kovalenko, Irina Bagryantseva, Elena Shutova, Vladimir Fedin

Research output: Contribution to journalArticlepeer-review

Abstract

The approach of the introduction of proton-conducting material into the pores of metal-organic frameworks was developed. Cr-MIL-53 with one-dimensional pores was used as effective matrix. Proton conductivity and structural properties of (1-x)CsH5(PO4)2–xCr-MIL-53 (x = 0.11–0.62) were investigated firstly. A significant increase of conductivity was shown due to the interface interaction of OH groups of Cr-MIL-53 and protons of CsH5(PO4)2. The CsH5(PO4)2 remains in composites with significant changes of structural properties due to dispersion and amorphization. The proton conductivity increases by 2–3 orders of magnitude and passes through maximum at x ∼ 0.3–0.5 reaching 6·10−3 S/cm at 130 °C. The developed approach affords solid materials with potent proton-conducting properties at moderate temperatures for electrochemical devices.

Original languageEnglish
Article number132181
JournalMaterials Letters
Volume318
DOIs
Publication statusPublished - 1 Jul 2022

Keywords

  • Cr-MIL-53
  • CsH(PO)
  • Metal–organic frameworks
  • Nanocomposites
  • Proton conductivity

OECD FOS+WOS

  • 2.05 MATERIALS ENGINEERING
  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY
  • 2.03 MECHANICAL ENGINEERING

Fingerprint

Dive into the research topics of 'CrMIL-53 as a matrix for proton-conducting nanocomposites based on CsH5(PO4)2'. Together they form a unique fingerprint.

Cite this