Performance of PEMFC with new polyvinyl-ionic liquids based membranes as electrolytes

Díaz, María Dolores Díaz; Ortiz, Alfredo; Vilas, Miguel; Tojo, Emília; Ortíz, Inmaculada

doi:10.1016/j.ijhydene.2013.04.155

Cited by 60 publications

(42 citation statements)

References 27 publications

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“…More specifically, the photopolymerization of ammonium and imidazolium RTIL monomers with either acrylate [32e34] or styrene-based [8,34e36] polymerizable groups have been already described for the preparation of dense films (20e200 mm in thickness) after 300 s of irradiation time. Recently, Ortiz and cols [36,8] have reported the conductivity and fuel cell performance of polymerized imidazolium-based protic ionic liquid [HSO 3 eBVIm þ ][OTf À ] achieving peak power density of 25 mW cm À2 at 40 C under dry conditions. Accounting from these results, the aim of this work is the preparation of conductive polymer films by photopolymerization of ionic liquid monomers with enhanced conduction performance for high temperature PEMFCs applications (up to 175 C).…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, van de Ven and cols [19] reported power density values of 0.039 mW cm À2 at 150 C for tailor-made porous PBI support impregnated with [HMIm þ ][TFSI À ] as conductive filler. The impregnation of Nafion 112 with [HSO 3 -BMIm þ ][NTf 2 À] ionic liquid rendered in peak power densities of 50 mW cm À2 and 0.4 mW cm À2 at 25 C under wet and dry conditions, respectively[8]. Among the published results on high temperature PEMFCs, the composite membrane based on polypropylene matrix impregnated with an ionic liquid tertiary amine phos-…”

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confidence: 99%

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UV polymerization of room temperature ionic liquids for high temperature PEMs: Study of ionic moieties and crosslinking effects

Lemus

Eguizábal

Pina

2015

International Journal of Hydrogen Energy

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Vinyl polymerizable groups Ultraviolet induced polymerization Crosslinking HT PEMs a b s t r a c t The conductivity performance of commercial available room-temperature ionic liquids (RTILs) has been evaluated from room conditions up to 200 C as a function of relative humidity for their potential application in high temperature PEMs. In particular, ammonium and imidazolium based ionic liquids with different counterions and substituents have been investigated. On the basis of conductivity performance, the best RTILs have been selected for the preparation of all solid state ion conductive films by bulk photo-assisted radical polymerization. The goodness of the UV photopolymerization of the respective monomeric ionic liquids (MILs) with vinyl functionality as a function of divinylbenzene cross-linker content has been evaluated by TGA and FTIR analyses. Poly-ionic liquid (PIL) films have been successfully accomplished for polymerized H-3-vinylimidazolium bis(trifluoromethanesulfonyl)imide upon exposure to 365 nm UV lamp with an intensity of 2.4 mW/cm 2 for 15 min. Conductivity values above 1.1 S cm À1 at 200 C have been registered for pure poly[1-(3H-imidazolium)ethylene] bis(trifluoromethanesulfonyl)imide.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

UV polymerization of room temperature ionic liquids for high temperature PEMs: Study of ionic moieties and crosslinking effects

Lemus

Eguizábal

Pina

2015

International Journal of Hydrogen Energy

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“…Introduction Room Temperature Ionic liquids (RTILs) have been extensively investigated as novel electrolyte materials for a wide range of electrochemical devices including capacitors [1], thermo-cells [2], fuel cells [3] and batteries. [4] Due to the electrochemical and thermal stability of many RTILs, they have been investigated for their ability to support the electrochemistry of reactive metals (such as Na [5,6] and Li [7]) which are unstable in many traditional electrolytes.…”

Section: 0mentioning

confidence: 99%

The electrochemical cycling and electrodeposition of lead from 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ionic liquid

Simons

Pearson

Izgorodina

et al. 2015

Electrochimica Acta

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“…They further obtained comparable values of conductivity (~0.1 mS cm −1 at 150 °C) for lamellar samples of copolymers with similar compositions but different imidazolium alkyl groups; however, the ionic conductivity of copolymers could be related to the POIL composition and the corresponding morphology (0.01 mS cm −1 for 8.6 mol% POIL and 0.1 mS cm −1 for 17.0 mol% POIL at 150 °C). Díaz et al [ 127 ] …”

Section: Polymerized Ilsmentioning

confidence: 99%

Task-Specific Ionic Liquids for Electrochemical Applications

Zhao

2015

Electrochemistry in Ionic Liquids

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Ionic liquids (ILs) have been widely examined as solvents, additives, or catalysts in a variety of applications including organic catalysis [ 1 -5 ], inorganic and materials synthesis [ 6 ], biocatalysis [ 7 -12 ], electrochemistry [ 13 ], pharmaceutical chemistry [ 14 ], polymerization [ 15 , 16 ], and engineering fl uids [ 17 -19 ]. The physicochemical properties of ILs are tunable through a careful selection of a variety of different cations and anions and a rational combination of ion pairs. More interestingly, cations and/or anions can be further functionalized to form so-called task-specifi c ionic liquids (TSILs). The notion of TSILs carrying specifi c functionality tailored for particular applications has proven visionary, and a variety of different functional groups have been grafted onto ILs [ 20 -22 ]. In particular, there is an exponential growth in constructing new TSILs as electrolytes for electrochemical applications. This chapter focuses on a critical discussion of some major types of TSILs and their electrochemical properties and applications. Ether/Thioether-and Hydroxyl/Thiol-Functionalized ILs General Physical PropertiesOur recent review has captured some key physical properties of ether-and alcoholfunctionalized ILs [ 22 ]. The inclusion of alkyloxy or alkyloxyalkyl groups in ILs often lowers the melting points ( T m ) [ 23 -26 ]. Additionally, the lowering of the

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Performance of PEMFC with new polyvinyl-ionic liquids based membranes as electrolytes

Cited by 60 publications

References 27 publications

UV polymerization of room temperature ionic liquids for high temperature PEMs: Study of ionic moieties and crosslinking effects

UV polymerization of room temperature ionic liquids for high temperature PEMs: Study of ionic moieties and crosslinking effects

The electrochemical cycling and electrodeposition of lead from 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ionic liquid

Task-Specific Ionic Liquids for Electrochemical Applications

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