Ionic liquid‐modified materials as polymer electrolyte membrane and electrocatalyst in fuel cell application: An update

Abstract

Ionic liquids (ILs) are promising solvents for catalytic and electrolyte applications, gas absorption, and extractions in electrochemical systems due to their useful features, such as high conductivity and good thermal, chemical, and electrical stability. This review focuses on incorporating ILs into fuel cell (FC) systems, specifically into two main components of FC (ie, polymer electrolyte membrane and electrocatalyst). In FC, a polymer electrolyte membrane with excellent conductivity and deprived of humidity even at high temperatures must be created for effective early commercialization of this technology.Electrocatalyst performance can also be enhanced with additive materials, such as ILs, thus further improving the entire achievement of FCs. This work discusses the most important reasons for ongoing studies and outlines the current progress in using ILs as a revolutionary form of polymer electrolyte membrane and electrocatalyst.

Energy Applications of Ionic Liquids: Recent Developments and Future Prospects

“…With available protons for proton conduction, PILs are particularly well-suited for use in fuel cells. In the past five years, as a subclass of IL, greater attention has been devoted to the utilization of PILs in proton exchange membrane (PEM) fuel cells. ,,,, …”

“…In the past five years, as a subclass of IL, greater attention has been devoted to the utilization of PILs in proton exchange membrane (PEM) fuel cells. 33,265,268,280,281 In this section, we focus on several conventional polymers combined with PILs as PEMs. These polymers are expected to be employed for the anhydrous proton conduction process in PEM under high temperatures.…”

Thermal and Electrical Properties of High-Temperature Proton-Conducting Cellulose Nanofibers Swollen with Protic Ionic Liquid

“…Another alternative for heterocyclic molecules is the use of protic ionic liquids (PILs) as conductive fillers in the preparation of proton-conductive materials. − These are ionic liquids characterized by high ionic conductivity, low vapor pressure, low viscosity, and high thermal stability, and additionally, they also have an exchangeable proton located on the cation . For PILs to be used in a proton-conducting material, it is necessary to embed them in a material with adequate chemical and thermal stability and strength.…”

Mathematical modelling and design of the ionic liquid compressor for the hydrogen refuelling station

“…Ionic liquids are formed by an organic cation and an organic or inorganic anion presenting as molten salts, many of which are liquid at room temperature. 16 They possess several excellent properties including negligibly low vapor pressures, 17 electrochemical stability, chemical stability, 18 thermal stability, high ionic conductivity, 19 low flammability, 20 and excellent lubricity, 21 which promotes the application of them in various energy fields such as fuel cells, 22 solar cells, 23 batteries, 24 and energy storage. 25 As the most promising compression solution, in the ionic liquid compressor, the solid piston of the reciprocating compressor is substituted by the ionic liquid piston and driven by the hydraulic system.…”