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

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

doi:10.1016/j.matlet.2022.132181

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 journal › Article › peer-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 language	English
Article number	132181
Journal	Materials Letters
Volume	318
DOIs	https://doi.org/10.1016/j.matlet.2022.132181
Publication status	Published - 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

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10.1016/j.matlet.2022.132181

Cite this

@article{f7000474a13c4e2dbead16ea1d866611,

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

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.",

keywords = "Cr-MIL-53, CsH(PO), Metal–organic frameworks, Nanocomposites, Proton conductivity",

author = "Valentina Ponomareva and Konstantin Kovalenko and Irina Bagryantseva and Elena Shutova and Vladimir Fedin",

note = "Funding Information: This work was carried out within financial support from RFBR (grant no. 18-29-04039) and State Assignment to Institute of Solid State Chemistry and Mechanochemistry SB RAS (121032500065-5). Publisher Copyright: {\textcopyright} 2022",

year = "2022",

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doi = "10.1016/j.matlet.2022.132181",

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AU - Ponomareva, Valentina

AU - Kovalenko, Konstantin

AU - Bagryantseva, Irina

AU - Shutova, Elena

AU - Fedin, Vladimir

N1 - Funding Information: This work was carried out within financial support from RFBR (grant no. 18-29-04039) and State Assignment to Institute of Solid State Chemistry and Mechanochemistry SB RAS (121032500065-5). Publisher Copyright: © 2022

PY - 2022/7/1

Y1 - 2022/7/1

N2 - 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.

AB - 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.

KW - Cr-MIL-53

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KW - Nanocomposites

KW - Proton conductivity

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