Multiblock poly(arylene ether nitrile) disulfonated poly(arylene ether sulfone) copolymers for proton exchange membranes: Part 2 electrochemical and H2/Air fuel cell analysis

Rowlett, Jarrett R.; Lilavivat, Visarn; Shaver, Andrew T.; Chen, Yu; Daryaei, Amin; Xu, Hui; Mittelsteadt, Cortney; Shimpalee, Sirivatch; Riffle, Judy S.; McGrath, James E.

doi:10.1016/j.polymer.2017.06.050

Cited by 20 publications

(12 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[9,13,[19][20][21] The presence of both hydrophilic and hydrophobic moieties on ion-conducting polymers drives phase segregation into respectived omains, [6,[22][23][24] which facilitates the formation of ionic clusters and channels throughout the materials prepared therefrom.T hese nano-and microscopic morphological features are critical to their properties as ion-conducting media. [21,[28][29][30] Ac riticalf actor for such membranes is the total ion content, or ion exchange capacity (IEC). [21,[28][29][30] Ac riticalf actor for such membranes is the total ion content, or ion exchange capacity (IEC).…”

Section: Introductionmentioning

confidence: 99%

“…[6,[24][25][26][27] Ah ighly prospective approach to emphasize and exploit phase behavior in ion-containing polymers is copolymerization,w hich has been frequently shown to be advantageous for the fabrication of membranes for electrochemical applications. [21,[28][29][30] Ac riticalf actor for such membranes is the total ion content, or ion exchange capacity (IEC). [31] There exists an intimate structure-morphology-propertyr elationship The copolymerizationo faprefunctionalized, tetrasulfonated oligophenylene monomer was investigated.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sulfophenylated Terphenylene Copolymer Membranes and Ionomers

et al. 2018

View full text Add to dashboard Cite

The copolymerization of a prefunctionalized, tetrasulfonated oligophenylene monomer was investigated. The corresponding physical and electrochemical properties of the polymers were tuned by varying the ratio of hydrophobic to hydrophilic units within the polymers. Membranes prepared from these polymers possessed ion exchange capacities ranging from 1.86 to 3.50 meq g−1 and exhibited proton conductivities of up to 338 mS cm−1 (80 °C, 95 % relative humidity). Small‐angle X‐ray scattering and small‐angle neutron scattering were used to elucidate the effect of the monomer ratios on the polymer morphology. The utility of these materials as low gas crossover, highly conductive membranes was demonstrated in fuel cell devices. Gas crossover currents through the membranes of as low as 4 % (0.16±0.03 mA cm−2) for a perfluorosulfonic acid reference membrane were demonstrated. As ionomers in the catalyst layer, the copolymers yielded highly active porous electrodes and overcame kinetic losses typically observed for hydrocarbon‐based catalyst layers. Fully hydrocarbon, nonfluorous, solid polymer electrolyte fuel cells are demonstrated with peak power densities of 770 mW cm−2 with oxygen and 456 mW cm−2 with air.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sulfophenylated Terphenylene Copolymer Membranes and Ionomers

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In a completely dry four-port flask with a constant pressure drop funnel, SPPEK powder was dissolved in chloroform to produce a chloroform solution of 0.1 g/ml. After full dissolution, a certain proportion of concentrated sulfuric acid and fuming sulfuric acid were added to the solution with a constant pressure and low drop funnel for sulfonation [10]. e degree of sulfonation was controlled by controlling the reaction conditions.…”

Section: Sulfonation Reactionmentioning

confidence: 99%

Preparation and Application of Aromatic Polymer Proton Exchange Membrane with Low-Sulfonation Degree

Gao¹,

Zhang²,

Zhong³

et al. 2020

International Journal of Chemical Engineering

View full text Add to dashboard Cite

4,4′-Dichlorodiphenylsulfone-3,3′-disulfonic acid (disodium) salt and 4,4′-difluorodiphenylsulfone were used as sulfonated monomer. 4,4′-Fluorophenyl sulfones were used as the nonsulfonated monomer. 4,4′-Dihydroxy diphenyl ether or 4,4′-thiodibenzenethiol was used as the comonomer. The sulfonated poly (aryl ether sulfone) (SPES) and sulfonated poly (arylene thioether sulfone) (SPTES) with sulfonation degree of 30% and 50% were successfully prepared by nucleophilic polycondensation. Two kinds of aromatic polymer proton exchange membranes were prepared by using sulfonated poly phthalazinone ether ketone (SPPEK) material and fluidization method. The performance of the prepared aromatic polymer proton exchange membrane was researched by the micromorphology, ion exchange capacity, water absorption and swelling rate, oxidation stability, tensile properties, and proton conductivity. Experimental results show that there is no agglomeration in the prepared aromatic polymer proton exchange membrane. The ion exchange capacity is 0.76–1.15 mmol/g. The water absorption and swelling rate increase with the increase of sulfonation degree. The sulfonated poly (aryl ether sulfone) membrane shows better oxidation stability than sulfonated poly (aryl sulfide sulfone). They have good mechanical stability. The prepared aromatic polymer proton exchange membrane with low sulfonation degree has good performance, which can be widely used in portable power equipment, electric vehicles, fixed power stations, and other new energy fields.

show abstract

“…This feature leads to a high probability of self-organization with formation of various types of nano-and microstructures containing ionic clusters and ionconductive channels. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] The resulting polymer network also causes strong changes in the mechanical properties of ionomers compared to the original non-ionic polymers. To a certain critical degree, this effect may lead to an increase in abrasion resistance, optical transparency, antistatic properties, interaction with various types of llers, heat sealability and adhesive properties to various types of materials, such as polymers, ceramics, and metals.…”

Section: Introductionmentioning

confidence: 99%