Fabrication and properties of cross-linked sulfonated fluorene-containing poly(arylene ether ketone) for proton exchange membrane

Ding, Fu Chuan; Wang, Shuanjin; Xiao, Min; Li, X.H.; Ye, Meng

doi:10.1016/j.jpowsour.2007.03.068

Cited by 61 publications

(28 citation statements)

References 39 publications

(40 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Above 180°C, when the dissociation of H 2 PO 4 − becomes more efficient, considering that the H 2 PO 4 − bears more protons (two protons) than HSO 4 − (only one) , the conductivity of the PAAS-H 2 PO 4 membrane came higher than that of PAAS-HSO 4 . It is known that the conductivity was decreased by the limitation of the polymer mobility in cross-linked proton conducting systems [30,31]. Under anhydrous conditions, small organic moleculars, such as triazole [32], were commonly used instead of the water to transport 25 417 28 50 288 6 250 166 3 500 142 3 the protons in these membranes.…”

Section: Proposed Mechanism For Proton Conductionmentioning

confidence: 99%

Effects of acids and water addition on morphology and proton conduction in sol–gel derived acid–base polysiloxane

Zeng¹,

Hu²,

Pan³

et al. 2010

Solid State Ionics

View full text Add to dashboard Cite

Section: Proposed Mechanism For Proton Conductionmentioning

confidence: 99%

Effects of acids and water addition on morphology and proton conduction in sol–gel derived acid–base polysiloxane

Zeng¹,

Hu²,

Pan³

et al. 2010

Solid State Ionics

View full text Add to dashboard Cite

“…Sulfonated aromatic PEMs possess less connected water domains and more hydrophobic and hydrophilic phase mixing, they show less proton conductivity at low humidity. 66 In the simple mechanism of proton transfer, imidzolic NH hydrogen, being electron deficient in sPBI structure, established hydrogen bonding with water molecules. A trend in increase in proton conductivities of sPBI/SIGO-x membranes was perceived due to distribution of SIGO content throughout the sPBI matrix.…”

Section: Conductivitymentioning

confidence: 99%

Fabrication and characterization of sulfonated polybenzimidazole/sulfonated imidized graphene oxide hybrid membranes for high temperature proton exchange membrane fuel cells

Imran

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

The sulfonated polybenzimidazole (sPBI)/sulfonated imidized graphene oxide (SIGO) was evaluated to be a potential candidate for high temperature proton exchange membranes fuel cells (HT-PEMFCs). Multifunctionalized covalently bonded SIGO is incorporated in sPBI matrix to resolve the drawbacks such as low proton conductivity, poor water uptake, and ion-exchange capacity (IEC) of sPBI polymer, synthesized by direct polycondensation in phosphoric acid for the application of proton exchange membranes. Strong hydrogen bonding among multifunctional groups established a neighborhood of interconnected hydrophobic graphene sheets and organic polymer chains. It provides hydrophobic-hydrophilic phase separation and facile proton hopping architecture. The optimized sPBI/SIGO (15 wt %) revealed 2.45 meq g −1 IEC; 5.81 mS cm −1 proton conductivity [120 C and 10% relative humidity (RH)] and 2.45% bound water content. The maximum power density of the sPBI/SIGO-15 membrane was 0.40 W cm −2 at 160 C (5% RH) and ambient pressure with stoichiometric feed of H 2 /air. This recommends that sPBI/SIGO composite membranes are compatible candidate for HT-PEMFCs.

show abstract

“…[9][10][11][12][13][14][15][16][17][18][19] Chemical crosslinking has an advantage of retaining its effects under increased temperatures. However, reduced proton conductivity was inevitably accompanied for most cases mainly due to the loss of sulfonic acid groups during thermal curing.…”

Section: Introductionmentioning

confidence: 99%

“…26,27 Only a few reports have, indeed, presented crosslinked membranes with both high proton conductivity and dimensional/mechanical stabilities especially at high temperatures. 13,14,22 In our previous work, we have introduced an azide-assisted DOI 10.1007/s13233-010-1016-9…”

Section: Introductionmentioning

confidence: 99%

Terminally-crosslinked sulfonated poly(fluorenyl ether sulfone) as a highly conductive and stable proton exchange membrane

et al. 2010

View full text Add to dashboard Cite

Sulfonated poly(fluorenyl ether sulfone) (PFES) with a terminally-crosslinked network structure was prepared by heat-induced crosslinking of the allyl-terminated telechelic sulfone polymers using a bisazide. The crosslinked polymer membrane with a sulfofluorenyl moiety of 70% (PFES-70) showed excellent hydrolytic, dimensional, and mechanical stability. The crosslinked PFES-70 membrane revealed a proton conductivity of 0.04 S/cm at 20 o C, which increased significantly with increasing temperature. The conductivity of 0.38 S/cm at 100 o C for PFES-70 was higher than that of both non-crosslinked (0.33 S/cm) and Nafion ® (0.17 S/cm). In addition, the crosslinked PFES-70 showed a methanol permeability of only 1.4% (3.9×10 -8 cm 2 /s) compared to Nafion ® .

show abstract

Fabrication and properties of cross-linked sulfonated fluorene-containing poly(arylene ether ketone) for proton exchange membrane

Cited by 61 publications

References 39 publications

Effects of acids and water addition on morphology and proton conduction in sol–gel derived acid–base polysiloxane

Effects of acids and water addition on morphology and proton conduction in sol–gel derived acid–base polysiloxane

Fabrication and characterization of sulfonated polybenzimidazole/sulfonated imidized graphene oxide hybrid membranes for high temperature proton exchange membrane fuel cells

Terminally-crosslinked sulfonated poly(fluorenyl ether sulfone) as a highly conductive and stable proton exchange membrane

Contact Info

Product

Resources

About