Phosphotungstic acid embedded sulfonated poly(arylene ether ketone sulfone) copolymers with amino groups for proton exchange membranes

RSC Advances ◽  
2015 ◽  
Vol 5 (101) ◽  
pp. 83320-83330 ◽  
Author(s):  
Lishuang Xu ◽  
Hailan Han ◽  
Meiyu Liu ◽  
Jingmei Xu ◽  
Hongzhe Ni ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Amino Groups ◽  
Base Interaction ◽  
Arylene Ether ◽  
High Proton ◽  
Ether Ketone ◽  
Sulfonated Poly ◽  
Acid Base Interaction

The acid–base interaction between HPW and the amino groups can immobilize HPW to maintain high proton conductivity at medium-high temperature in the composite membranes.

Sulfonated poly (arylene ether sulfone)-graft-sulfonated poly (vinyl alcohol) proton exchange membranes: Improved proton selectivity

2020 ◽  
pp. 095400832096816
Author(s):  
Hailin Yu ◽  
Yinghan Wang
Keyword(s):  
Vinyl Alcohol ◽  
Substitution Reaction ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Methanol Permeability ◽  
Poly Vinyl Alcohol ◽  
H Nmr ◽  
Arylene Ether ◽  
High Proton ◽  
Sulfonated Poly

Aldehyde terminated sulfonated poly (arylene ether sulfone) (SPAES-CHO) is prepared by a series of nucleophilic substitution reaction based on SPAES in this paper. Novel SPAES-graft-SPVA (SPAES-g-SPVA) membranes are fabricated by acetal reaction between SPAES-CHO and different amounts of sulfonated poly (vinyl alcohol) (SPVA). The 1H-NMR and FTIR indicate the successful preparation of SPAES-CHO and SPAES-g-SPVA membranes. With the introduction of SPVA, the SPAES-g-SPVA membranes have much lower methanol permeability than pure SPAES membrane and Nafion117 membrane. The methanol permeability coefficients of the SPAES-g-SPVA membranes decrease from 3.41 × 10−7 cm2 s−1 to 1.67 × 10−7 cm2 s−1 with the increase of SPVA content. And the proton conductivity of all the membranes is higher than 15 mS cm−1 at 25°C. Moreover, SPAES-g-SPVA membranes exhibit high proton selectivity. Especially, SPAES-g-SPVA-30% membrane has the highest proton selectivity, which is nearly five times higher than Nafion117.

scholarly journals Immobilisation and Release of Radical Scavengers on Nanoclays for Chemical Reinforcement of Proton Exchange Membranes

Membranes ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 208
Author(s):  
Alia Akrout ◽  
Aude Delrue ◽  
Marta Zatoń ◽  
Fanny Duquet ◽  
Francesco Spanu ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Proton Exchange Membranes ◽  
Ceo2 Nanoparticles ◽  
Proton Exchange ◽  
Radical Scavenger ◽  
Radical Scavengers ◽  
Amino Groups ◽  
High Proton Conductivity ◽  
High Proton ◽  
Radical Attack

Mechanical and chemical stability of proton exchange membranes are crucial requirements for the development of fuel cells for durable energy conversion. To tackle this challenge, bi-functional nanoclays grafted with amino groups and with embedded radical scavengers, that is, CeO2 nanoparticles were incorporated into Aquivion® ionomer. The composite membranes presented high proton conductivity and increased stability to radical attack compared to non-modified Aquivion membranes, demonstrating the effectiveness of the approach based on radical scavenger immobilisation and release from clay nanocontainers.

scholarly journals Synthesis and characterization of a novel crosslinkable side-chain sulfonated poly(arylene ether sulfone) copolymer proton exchange membranes

RSC Advances ◽  
2020 ◽  
Vol 10 (42) ◽  
pp. 24772-24783 ◽  
Author(s):  
Shouping Wang ◽  
Fugang He ◽  
Qiang Weng ◽  
Diao Yuan ◽  
Pei Chen ◽  
...  
Keyword(s):  
Single Cell ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Side Chain ◽  
Synthesis And Characterization ◽  
High Proton Conductivity ◽  
Arylene Ether ◽  
High Proton ◽  
Sulfonated Poly

A series of novel crosslinkable and crosslinked side-chain SPAES has been prepared. The S-SPAES(1/2) has high proton conductivity and acceptable single-cell performance.

Characterization of Multiblock Sulfonated Poly(Arylene Ether Sulfone) as Proton Exchange Membranes

2013 ◽  
Vol 805-806 ◽  
pp. 1321-1324
Author(s):  
Hai Dan Lin ◽  
Xiao Ying Yang ◽  
Cheng Xun Sun
Keyword(s):  
Ion Exchange ◽  
Water Uptake ◽  
Proton Exchange Membranes ◽  
Exchange Capacity ◽  
Proton Exchange ◽  
Membrane Properties ◽  
Multiblock Copolymers ◽  
Arylene Ether ◽  
Ether Ketone ◽  
Sulfonated Poly

A new series of hydrophobic-hydrophilic multiblock sulfonated poly (arylene ether ketone)-b-poly (arylene ether ketone) copolymers were successfully synthesized and evaluated for use as proton exchange membranes (PEMs). The membrane properties of block copolymers including ion exchange capacities (IECs), water uptake and proton conductivities were characterized for the multiblock copolymers and compared with random sulfonated poly (arylene ether) s and other multiblock copolymer membranes at similar ion exchange capacity value. This series of multiblock copolymers showed moderate conductivities up to 0.063 S/cm at 80 °C with very low water uptake of 19%. Therefore, they are considered to be promising PEM materials for fuel cells.

High proton conductivity of sulfonated methoxyphenyl-containing poly(arylene ether ketone) for proton exchange membranes

RSC Advances ◽  
2015 ◽  
Vol 5 (130) ◽  
pp. 107982-107991 ◽  
Author(s):  
Bo Dong ◽  
Yan Wang ◽  
Jinhui Pang ◽  
Shaowei Guan ◽  
Zhenhua Jiang
Keyword(s):  
Mechanical Properties ◽  
Proton Conductivity ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
High Proton Conductivity ◽  
Arylene Ether ◽  
High Proton ◽  
Ether Ketone ◽  
Polyelectrolyte Membrane

A polyelectrolyte membrane based on sulfonated methoxyphenyl-containing poly(arylene ether ketone) (SMP-PAEK) was obtained, which exhibited suitable proton conductivities and excellent mechanical properties.

A thermally crosslinked multiblock sulfonated poly(arylene ether ketone nitrile) copolymer with a 1,2,3-triazole pendant for proton conducting membranes

2018 ◽  
Vol 6 (8) ◽  
pp. 3560-3570 ◽  
Author(s):  
Huayuan Hu ◽  
Tiandu Dong ◽  
Yuqian Sui ◽  
Nanwen Li ◽  
Mitsuru Ueda ◽  
...  
Keyword(s):  
Molecular Design ◽  
Base Interaction ◽  
Proton Conducting ◽  
Thermally Induced ◽  
Arylene Ether ◽  
Ether Ketone ◽  
Novel Concept ◽  
Conducting Membranes ◽  
Sulfonated Poly ◽  
Acid Base Interaction

A novel concept for the molecular design of a proton conducting membrane is proposed; this concept simultaneously implements strategies involving multiblock, thermally induced rearrangement and acid–base interaction.

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