Insight into the behavior at the hygroscopicity and interface of the hydrophobic imidazolium-based ionic liquids

Zhou, Guohui; Jiang, Kun; Wang, Zhenlei; Liu, Xiaomin

doi:10.1016/j.cjche.2020.09.047

Cited by 30 publications

(10 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It would be interesting to repeat similar characterization when the sample is not only produced but also characterized in a nitrogen controlled atmosphere. The presence of water in the samples, which depends on how long they are exposed to air and the relative humidity, could affect the stability of the structured ionic liquid because of its hygroscopic properties …”

Section: Discussionmentioning

confidence: 99%

“…The presence of water in the samples, which depends on how long they are exposed to air and the relative humidity, could affect the stability of the structured ionic liquid because of its hygroscopic properties. 79 The decrease of the carbon thin film resistance due to the insertion of confined ionic liquid inside the porous carbon matrix, interacting with carbon film defects, can be ascribed to the confinement of a tiny amount of ionic liquid inside the porous structure and not directly to the formation of the solidlike ionic liquid domains. Its relevance for the performance of electrochemical devices is very important from the technological point of view, and it demands further characterization, through the combined approach of local imaging techniques and electrochemical measurements, in order to understand and control the behavior of the confined ionic liquid inside the bulk of the porous carbon thin film.…”

Section: ■ Conclusionmentioning

confidence: 99%

See 1 more Smart Citation

Nanoconfinement of Ionic Liquid into Porous Carbon Electrodes

et al. 2021

View full text Add to dashboard Cite

Planar electrochemical double-layer capacitors (supercapacitors) are strategic elements for the realization of miniaturized autonomous devices requiring energy storage and conversion capabilities. In particular, supercapacitors fabricated with nanoporous carbon electrodes and ionic liquids as electrolytes are very promising for a wide range of applications. The understanding and control of the interactions of the ionic liquid with the porous carbon interface is both practically and fundamentally interesting, because of the effects of surface confinement on the structural and functional properties of the ionic liquid. In particular, the role of the morphology in the ionic liquid confinement has attracted huge interest in many disciplines. Here we report direct experimental evidence of the solid-like structuring of confined 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([Bmim][NTf2]), which extends several tens of nanometers from the interface of nanoporous carbon thin films. These solid-like structures coexist with a huge amount of ionic liquid in its bulk phase. The presence of a solid-like phase occurring at the interface affects the double-layer organization of the ionic liquid at the electrified interface of nanoporous carbon based planar supercapacitors. Our results suggest the presence of the solid-like structured ionic liquid domains not only on the upper carbon thin film interface but also into the bulk of the nanoporous matrix.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: ■ Conclusionmentioning

confidence: 99%

Nanoconfinement of Ionic Liquid into Porous Carbon Electrodes

et al. 2021

View full text Add to dashboard Cite

show abstract

“…22 Jenel Vatamanu et al investigated the dependence on the electrode potential of the interfacial structure and differential capacitance (DC) for imidazolium-based ILs ([C n mim][TFSI], n = 2, 4, 6 and 8) near basal (flat) and prismatic edge face (rough) graphite electrodes with atomistic simulations. 23 Overall, camel-shaped DCs 24–27 were observed on both surfaces. More findings have been detailed from the perspective of energy changes by simulation.…”

Section: Introductionmentioning

confidence: 92%

Different shapes based on ionic liquid leading to a two-stage discharge process

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…It was shown previously that the [NTf 2 ] − anion has a more hydrophobic character compared to [PF 6 ] − [ 41 , 42 , 43 , 44 ]. Moreover, usually the hydrophobicity is determined in a greater extent by the properties of anions rather than those of cations (e.g., slight difference in alkyl chain length) [ 44 , 45 , 46 , 47 ].…”

Section: Resultsmentioning

confidence: 99%

Investigating the Proton and Ion Transfer Properties of Supported Ionic Liquid Membranes Prepared for Bioelectrochemical Applications Using Hydrophobic Imidazolium-Type Ionic Liquids

et al. 2021

View full text Add to dashboard Cite

Hydrophobic ionic liquids (IL) may offer a special electrolyte in the form of supported ionic liquid membranes (SILM) for microbial fuel cells (MFC) due to their advantageous mass transfer characteristics. In this work, the proton and ion transfer properties of SILMs made with IL containing imidazolium cation and [PF6]− and [NTf2]− anions were studied and compared to Nafion. It resulted that both ILs show better proton mass transfer and diffusion coefficient than Nafion. The data implied the presence of water microclusters permeating through [hmim][PF6]-SILM to assist the proton transfer. This mechanism could not be assumed in the case of [NTf2]− containing IL. Ion transport numbers of K+, Na+, and H+ showed that the IL with [PF6]− anion could be beneficial in terms of reducing ion transfer losses in MFCs. Moreover, the conductivity of [bmim][PF6]-SILM at low electrolyte concentration (such as in MFCs) was comparable to Nafion.

show abstract

Insight into the behavior at the hygroscopicity and interface of the hydrophobic imidazolium-based ionic liquids

Cited by 30 publications

References 48 publications

Nanoconfinement of Ionic Liquid into Porous Carbon Electrodes

Nanoconfinement of Ionic Liquid into Porous Carbon Electrodes

Different shapes based on ionic liquid leading to a two-stage discharge process

Investigating the Proton and Ion Transfer Properties of Supported Ionic Liquid Membranes Prepared for Bioelectrochemical Applications Using Hydrophobic Imidazolium-Type Ionic Liquids

Contact Info

Product

Resources

About