Proton conducting blend membranes: physical, morphological and electronic properties

Al‐Ahmed, Amir; Nazal, Mazen K.; Sultan, Abdullah S.; Adewole, Jimoh K.; Zaidi, Syed Javaid

doi:10.1007/s00289-016-1756-6

Cited by 3 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…40 However, the high DS value is always accompanied by excessive water uptake and high dimensional swelling, subsequently resulting in severe methanol permeability. 41,42 Polymer blending is an effective way to overcome the dimensional swelling and methanol permeability problems of SPEEK because the extraordinary properties of polymeric fillers can be combined into the SPEEK membrane. 43 The compatibility of the polymer blends should be first taken into account since it largely affects the phase separation of PEMs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Semi-Interpenetrating Polymer Network Membranes from SPEEK and BPPO for High Concentration DMFC

Liu

Zhang

Deng

et al. 2018

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

In the present work, semi-interpenetrating polymer networks (semi-IPNs) fabricated by the in situ synthesis of crosslinking networks between diamine cross-linkers and bromomethylated poly(phenylene oxide) (BPPO) are used toward sulfonated poly(ether ether ketone) (SPEEK) membrane applications for high concentration direct methanol fuel cells (DMFCs). Four kinds of diamine cross-linkers with different structures of hydrophobic flexible, hydrophilic flexible, hydrophobic rigid/ bulky, and hydrophilic rigid/bulky are applied to construct the semi-IPNs. The influences of cross-linkers on the key properties, such as phase separation, water uptake, proton conductivity, and methanol permeability, as well as cell performances, are systematically investigated. The results indicate that fabricating semi-IPNs is an attentive approach to improve the properties of SPEEK. The hydrophobic rigid/bulky fluorine cross-linker is the most effective to reduce methanol permeability, giving rise to the highest power output of the high concentration DMFC. In particular, by analyzing the correlation of cell performances, proton conductivity, and methanol permeability, we note that methanol permeability is more important than proton conductivity for high concentration DMFCs.

show abstract

Section: Introductionmentioning

confidence: 99%

“…In contrast, the low DS value leads to insufficient proton conductivity, hindering the application of SPEEK in DMFCs . However, the high DS value is always accompanied by excessive water uptake and high dimensional swelling, subsequently resulting in severe methanol permeability. , …”

Section: Introductionmentioning

confidence: 99%

Semi-Interpenetrating Polymer Network Membranes from SPEEK and BPPO for High Concentration DMFC

Liu

Zhang

Deng

et al. 2018

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…However, a high DS value causes excess swelling behavior at high temperature (>60 °C). In contrast, a low DS value always gives rise to insufficient proton conductivity . In previous studies, semi‐interpenetrating polymer networks (semi‐IPNs), in which one linear or branched polymer is uniformly penetrated into a crosslinking polymer networks, have been recognized to be an effective approach to overcome the swelling problem of SPEEK .…”

Section: Introductionmentioning

confidence: 99%

Investigation of Diamine Cross‐Linker on Semi‐IPNs of BPPO/SPEEK Membranes for Direct Methanol Fuel Cell

et al. 2018

View full text Add to dashboard Cite

Low methanol permeability is one of the most critical factors for proton exchange membranes utilized in direct methanol fuel cells (DMFCs). Here, sulfonated poly(ether ether ketone) (SPEEK) polymer chains are interpenetrated into the semi‐interpenetrating polymer networks (semi‐IPNs) constructed by the alkylation reaction between bromobenzyl groups of bromomethylated poly(phenylene oxide) and amine groups of 2,2′‐(ethylenedioxy)bis(ethylamine) cross‐linker. The influences of crosslinking network contents on the key properties of SPEEK membranes are systematically investigated. Dimensional stability and methanol‐permeability resistance are enhanced as the increase of the crosslinking network contents. The relative selectivity is significantly improved due to the largely reduced methanol permeability. The DMFC assembled by the membrane with 20 wt.% crosslinking networks demonstrates four times higher power output than the Nafion 117 DMFC in 5 M methanol solution.

show abstract

Solution-blended sulfonated polyphenylene and branched poly(arylene ether sulfone): Synthesis, state of water, surface energy, proton transport, and fuel cell performance

Motealleh

Huang

Largier

et al. 2019

Polymer

View full text Add to dashboard Cite

Proton conducting blend membranes: physical, morphological and electronic properties

Cited by 3 publications

References 28 publications

Semi-Interpenetrating Polymer Network Membranes from SPEEK and BPPO for High Concentration DMFC

Semi-Interpenetrating Polymer Network Membranes from SPEEK and BPPO for High Concentration DMFC

Investigation of Diamine Cross‐Linker on Semi‐IPNs of BPPO/SPEEK Membranes for Direct Methanol Fuel Cell

Solution-blended sulfonated polyphenylene and branched poly(arylene ether sulfone): Synthesis, state of water, surface energy, proton transport, and fuel cell performance

Contact Info

Product

Resources

About