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Proton conduction in a phosphonate-based metal–organic framework mediated by intrinsic “free diffusion inside a sphere”
Authors:
Simona
Pili
(University of Manchester)
,
Stephen
Argent
(University of Nottingham)
,
Christopher
Morris
(University of Manchester)
,
Peter
Rought
(University of Manchester)
,
Victoria
García-Sakai
(ISIS Pulsed Neutron and Muon Source)
,
Ian
Silverwood
(University College London (UCL); ISIS Pulsed Neutron and Muon Source)
,
Timothy
Easun
(University of Nottingham)
,
Ming
Li
(University of Nottingham)
,
Mark
Warren
(Diamond Light Source)
,
Claire
Murray
(Diamond Light Source)
,
Chiu
Tang
(Diamond Light Source)
,
Sihai
Yang
(University of Nottingham)
,
Martin
Schroeder
(University of Manchester)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Journal Of The American Chemical Society
State:
Published (Approved)
Published:
May 2016

Abstract: Understanding the molecular mechanism of proton conduction is crucial for the design of new materials with improved conductivity. Quasi-elastic neutron scattering (QENS) has been used to probe the mechanism of proton diffusion within a new phosphonate-based metal–organic framework (MOF) material, MFM-500(Ni). QENS suggests that the proton conductivity (4.5 × 10–4 S/cm at 98% relative humidity and 25 °C) of MFM-500(Ni) is mediated by intrinsic “free diffusion inside a sphere”, representing the first example of such a mechanism observed in MOFs.
Journal Keywords: Diffusion; Molecules; Metal organic frameworks; Proton conductivity; Materials
Diamond Keywords: Fuel Cells
Subject Areas:
Chemistry,
Materials,
Energy
Instruments:
I11-High Resolution Powder Diffraction
,
I19-Small Molecule Single Crystal Diffraction
Added On:
22/05/2016 18:52
Documents:
jacs.6b02194.pdf
Discipline Tags:
Energy Storage
Energy
Chemistry
Materials Science
Metal-Organic Frameworks
Metallurgy
Organometallic Chemistry
Technical Tags:
Diffraction
Single Crystal X-ray Diffraction (SXRD)
X-ray Powder Diffraction