Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Batteries and Fuel Cells03:12

Batteries and Fuel Cells

A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
Microbial Fuel Cells01:23

Microbial Fuel Cells

Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...
Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Pleomorphic adenoma arising from ectopic salivary glands in the submandibular region: a case report.

Journal of surgical case reports·2026
Same author

Assessment of Incidence of Lateral Incisive Canals in a Japanese Population Using Dental Cone-Beam Computed Tomography.

The Bulletin of Tokyo Dental College·2026
Same author

Protic Ionic Liquids in Contrast to Aprotic Analogs: Transport Properties and Electrochemical Reactivity.

Chemical record (New York, N.Y.)·2026
Same author

Prevalence and Clinical Characteristics of Isolated Intraventricular Hemorrhage.

Cerebrovascular diseases extra·2026
Same author

Nucleic acid detection based on single-cluster analysis of cross-linking aggregates of DNA-modified gold nanoparticles using a dark-field microscope.

Analytical sciences : the international journal of the Japan Society for Analytical Chemistry·2026
Same author

Non-syndromic Bilateral Posterior Maxillary Supernumerary Teeth: Rare Combination of Paramolar and Distomolar.

The Bulletin of Tokyo Dental College·2026

Related Experiment Video

Updated: Jun 12, 2026

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
11:04

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Nonhumidified intermediate temperature fuel cells using protic ionic liquids.

Seung-Yul Lee1, Atsushi Ogawa, Michihiro Kanno

  • 1Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan.

Journal of the American Chemical Society
|June 29, 2010
PubMed
Summary

This study details a protic ionic liquid, diethylmethylammonium trifluoromethanesulfonate ([dema][TfO]), for nonhumidified fuel cells. Composite membranes enable efficient operation at intermediate temperatures, showing promise for hydrogen-oxygen fuel cell applications.

More Related Videos

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
10:42

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

Published on: August 10, 2016

Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source
06:39

Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source

Published on: October 20, 2023

Related Experiment Videos

Last Updated: Jun 12, 2026

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
11:04

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
10:42

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

Published on: August 10, 2016

Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source
06:39

Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source

Published on: October 20, 2023

Area of Science:

  • Electrochemistry
  • Materials Science
  • Chemical Engineering

Background:

  • Protic ionic liquids (PILs) are explored as electrolytes for fuel cells.
  • Diethylmethylammonium trifluoromethanesulfonate ([dema][TfO]) is investigated for its proton conductivity.
  • Nonhumidified fuel cell operation at intermediate temperatures presents challenges for traditional electrolytes.

Purpose of the Study:

  • To characterize [dema][TfO] as a proton conductor for fuel cells.
  • To fabricate and evaluate a membrane-type fuel cell system using [dema][TfO] under nonhumidified conditions.
  • To assess the performance of composite membranes incorporating [dema][TfO] for fuel cell applications.

Main Methods:

  • Physicochemical and electrochemical characterization of [dema][TfO].
  • Fabrication of membrane-type fuel cells using [dema][TfO] and composite membranes.
  • Evaluation of fuel cell performance, including open circuit voltage (OCV) and current density.
  • Analysis of proton conduction mechanisms and transference numbers.

Main Results:

  • [dema][TfO] exhibits high activity for hydrogen oxidation and oxygen reduction reactions at a Pt electrode.
  • Fuel cells using [dema][TfO] achieved an OCV of 1.03 V at 150°C.
  • Composite membranes with up to 80 wt% [dema][TfO] showed good thermal stability, ionic conductivity, and mechanical strength.
  • H(2)/O(2) fuel cells with composite membranes operated from 30-140°C under nonhumidified conditions, reaching 250 mA cm⁻² at 120°C.

Conclusions:

  • [dema][TfO] is a viable proton conductor for nonhumidified fuel cells.
  • Proton conduction involves both vehicle and proton-exchange mechanisms, avoiding cell polarization.
  • Composite membranes offer excellent performance and compatibility with [dema][TfO].
  • The developed system is a promising candidate for nonhumidified H(2)/O(2) fuel cells.