ISIS Neutron and Muon Source Data Journal

QENS study to understand the domain-specific dynamics of ionic liquid confined in multi wall carbon nano tube (MWCNT)

Abstract: Room-temperature ionic liquids (RTILs or simply ILs) are promising electrolytes for electrochemical double-layer capacitors (EDLC), called supercapacitors. They are viscous charged fluids, typically liquid at temperatures well below 373K. Although a complex motion of confined ILs in nanopores is predicted in, clear experimental evidence is still pending. Therefore, dynamics of confined ILs is a vivid subject of investigation. Reports reveal that the ILs in a confinement form solid-like structure at the interface with substrates showing the existence of two populations of ions: (i) at the vicinity of the pore walls and (ii) in the proximity of the pore center. The interplay between these two components significantly endows ILs with distinct physicochemical properties in the confinement. In literature, QENS study on [bmim+][Tf2N ] IL confined in mesoporous carbon matrix (pore size ~9nm) showed enhanced diffusivity of cations as compared to that in the bulk IL. Molecular dynamics (MD) report showed ultrafast diffusion of IL ([bmim+][Tf2N ] confined in carbon nanotube (CNT). Although water dynamics in single- and double-wall CNT has been studied using QENS, experimental evidence of the dynamics of IL in single, double or the multi-wall CNTs using QENS is lacking. We therefore, would like to explore the confinement-induced alteration of the molecular mobility of [bmim+][Tf2N ] IL confined in the nanopores (average pore size 10-20nm) of multiwall CNT (MWCNT) using the QENS.

Principal Investigator: Dr Dhanadeep Dutta
Experimenter: Mr Shapath Bhandari
Local Contact: Dr Sanghamitra Mukhopadhyay

DOI: 10.5286/ISIS.E.RB2610104

ISIS Experiment Number: RB2610104

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Dhanadeep Dutta et al; (2026): QENS study to understand the domain-specific dynamics of ionic liquid confined in multi wall carbon nano tube (MWCNT), STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2610104

Data is released under the CC-BY-4.0 license.