High-Temperature Ionic-Conducting Material: Advanced Structure and Improved Performance

Langévin, D.; Nguyen, Quang Trong; Marais, Stéphane; Karademir, Séma; Sanchez, Jean‐Yves; Iojoiu, Cristina; Martinez, Mathieu; Merçier, Régis; Judeinstein, Patrick; Chappey, Corinne

doi:10.1021/jp312575m

Cited by 36 publications

(48 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such a sample thickness guarantees that neutron beam transmission through the sample exceeds 90 %. Thus, 21 the effects of multiple scattering are negligible and unwanted absorption can be considered to be suppressed. Corrections for self-shielding effects were made at the step of data-reduction.…”

Section: Qens Experimentsmentioning

confidence: 99%

Proton Diffusivity in the Protic Ionic Liquid Triethylammonium Triflate Probed by Quasielastic Neutron Scattering

et al. 2015

View full text Add to dashboard Cite

Quasielastic neutron scattering (QENS) in combination with deuterium labeling allows for studying protonated "highlighted" species and extracting detailed information about tangled stochastic processes. This approach has been applied to examine proton dynamics in the protic ionic liquid, triethylammonium triflate. The temperature range covered during the experiments (2-440 K) included two melting transitions correspondingly reflected in the global and localized dynamics of the cation. To focus on the dynamics of the acidic proton, QENS spectra of the sample with the deuterated alkyl side chains were analyzed. The remaining hydrogen atom served as a tagged particle for investigating both global long-range motion of the cation and specific dynamics of the proton and, thus, provided insight into the transport properties of triethylammonium triflate, which is important for designing electrochemical devices.

show abstract

Section: Qens Experimentsmentioning

confidence: 99%

Proton Diffusivity in the Protic Ionic Liquid Triethylammonium Triflate Probed by Quasielastic Neutron Scattering

et al. 2015

View full text Add to dashboard Cite

show abstract

“…10 −6 S cm −1 at 150 °C. The fact that the proton transfer is not depending on the water molecules, the anhydrous PEMS are applicable for medium to high operating temperature range of 100–200 °C . It should be noted that the high operating temperatures, normally defined as above 120 °C, bring in several advantages, especially the kinetically enhancing proton conductivity, excluding the carbon monoxide on Pt catalyst surface, etc.…”

Section: Introductionmentioning

confidence: 99%

Layer‐by‐layer Proton Donor and Acceptor Membrane for an Efficient Proton Transfer System in a Polymer Electrolyte Membrane Fuel Cell

Meemuk

Chirachanchai

2018

Fuel Cells

View full text Add to dashboard Cite

The high performance proton transfer in polymer electrolyte membranes (PEMs) is known to be achieved through cooperating of proton donors and acceptors. In order to obtain the effective and efficient proton transfer, the present work proposes a membrane with proton donors and proton acceptors in layer‐by‐layer (LbL) structure. By applying sulfonated poly (ether ether ketone) (SPEEK) as the substrate membrane and soaking alternatively with the proton donor polymer, i.e. poly(acrylic acid) (PAA), and the proton acceptor heterocycles, i.e. benzimidazoles (BI), the LbL SPEEK/BI/PAA membranes can be achieved. The systematic variation based on the branching benzimidazole groups suggest that the LbL SPEEK/BI/PAA membrane obtained shows an increase in proton conductivity compared to the neat SPEEK, especially in the case of the membrane with trifunctional benzimidazole (B4) is as high as 1–2.5 orders of magnitude over the temperature range of 30–170 °C. The present work points out the simple surface modification of the proton conductive membrane by layer‐by‐layer approach as a practical and simple way to enhance the performance of polymer electrolyte membrane.

show abstract

“…In the study developed by Langevin et al [86] a composite proton-conducting membrane based on an ionic liquid and a porous polymer support was prepared for use in a PEMFC at elevated temperature. The composite material was prepared by impregnating a macroporous support with a highly proton conductive ionic liquid: triethylammonium trifluoromethanesulphonate (TFSu-TEA).…”

Section: Polymer-ionic Liquid Membranesmentioning

confidence: 99%

Progress in the use of ionic liquids as electrolyte membranes in fuel cells

Díaz

Ortiz

Ortíz

2014

Journal of Membrane Science

253

139

View full text Add to dashboard Cite

This work provides a critical review of the progress in the use of Room Temperature Ionic Liquids (RTILs) as Proton Exchange Membrane (PEM) electrolytes in Fuel Cells (FCs). It is well-known that for an efficient early commercialisation of this technology it is necessary to develop a proton exchange membrane with high proton conductivity without water dependency capable of working at temperatures above 100 ºC. The use of ionic liquids as electrolytes in electrochemical devices is an emerging field due to their high conductivity, as well as their thermal, chemical and electrochemical stability under anhydrous conditions. This paper attempts to give a general overview of the state-of-the-art, identifies the key factors for future research and summarises the recent progress in the use of ionic liquids as an innovative type of PEMs.

show abstract

High-Temperature Ionic-Conducting Material: Advanced Structure and Improved Performance

Cited by 36 publications

References 58 publications

Proton Diffusivity in the Protic Ionic Liquid Triethylammonium Triflate Probed by Quasielastic Neutron Scattering

Proton Diffusivity in the Protic Ionic Liquid Triethylammonium Triflate Probed by Quasielastic Neutron Scattering

Layer‐by‐layer Proton Donor and Acceptor Membrane for an Efficient Proton Transfer System in a Polymer Electrolyte Membrane Fuel Cell

Progress in the use of ionic liquids as electrolyte membranes in fuel cells

Contact Info

Product

Resources

About