Nafion – Azole Composite Membranes for High Temperature PEMFC

2014 ◽  
Vol 783-786 ◽  
pp. 1692-1697
Author(s):  
Je Deok Kim ◽  
Mun Suk Jun
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
High Temperature ◽  
Proton Conductivity ◽  
Composite Membrane ◽  
Room Temperature ◽  
Composite Membranes ◽  
Thermal And Mechanical Properties ◽  
High Proton Conductivity ◽  
High Proton

Nafion-azole (benzimidazole, 1,2,4-triazole, 1,2,3-triazole) composite membranes were prepared by room temperature and autoclave solution processing for high temperature (above 100 °C) PEMFC. Among the various Nafion – azole composite membranes, Nafion – 1,2,3-triazole membrane showed excellent flexibility, thermal stability, and homogeneous structure. Nafion – 1,2,4-triazole composite membrane had high thermal and mechanical properties, and also showed high proton conductivity of 0.02 S/cm at the temperature of 160 °C under dry (N2) condition.

Facile Preparation of Well-Dispersed GO-SPEEK Composite Membranes by Electrospun for Fuel Cell Applications

2015 ◽  
Vol 1735 ◽  
Author(s):  
Xu Liu ◽  
Xiaoyu Meng ◽  
Chuanming Shi ◽  
Jiangbei Huo ◽  
Ziqing Cai ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Composite Membrane ◽  
Composite Membranes ◽  
Proton Exchange ◽  
Electrospinning Technique ◽  
Fuel Cell Application ◽  
High Proton ◽  
Poly Ether Ether Ketone ◽  
Direct Methanol

ABSTRACTGraphene oxide (GO) is one of the most attractive inorganic nanofillers in proton exchange membranes (PEMs) for its large specific surface area and high proton conductivity. The proton conductivity of GO nanosheet is known to be orders of magnitude greater than the bulk GO, thus it is essential to improve the dispersion of GO nanosheets in the PEM matrix to achieve higher conductivity. In this study, we report a facile and effective method to fabricate a GO/sulfonated poly ether ether ketone (SPEEK) composite membrane with well-dispersed GO nanosheets in SPEEK matrix by using electrospinning technique for direct methanol fuel cell application. The composite membrane exhibits improved proton conductivity, dimensional stability and methanol barrier property due to the presence of well-dispersed GOs. It is believed that the GO nanosheets can not only induce continuous channels for proton-conducting via Grotthuss mechanism, but also act as methanol barriers to hinder the methanol molecules from passing through the membrane.

A highly proton-conducting, methanol-blocking Nafion composite membrane enabled by surface-coating crosslinked sulfonated graphene oxide

2016 ◽  
Vol 52 (10) ◽  
pp. 2173-2176 ◽  
Author(s):  
Guangwei He ◽  
Xueyi He ◽  
Xinglin Wang ◽  
Chaoyi Chang ◽  
Jing Zhao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxide Film ◽  
Proton Conductivity ◽  
Composite Membrane ◽  
Surface Coating ◽  
Nafion Membrane ◽  
Methanol Permeability ◽  
High Proton Conductivity ◽  
High Proton ◽  
Sulfonated Graphene

Coating an ultrathin graphene oxide film onto a Nafion membrane confers a distinct anti-tradeoff behavior: 93% decrease of methanol permeability while retaining the high proton conductivity.

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 Two-Dimensional Inorganic–Organic Hybrid Solid of Manganese(II) Hydrogenophosphate Showing High Proton Conductivity at Room Temperature

2016 ◽  
Vol 55 (17) ◽  
pp. 8971-8975 ◽  
Author(s):  
Hai-Rong Zhao ◽  
Chen Xue ◽  
Cui-Ping Li ◽  
Kai-Ming Zhang ◽  
Hong-Bin Luo ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Room Temperature ◽  
Two Dimensional ◽  
High Proton Conductivity ◽  
Organic Hybrid ◽  
High Proton

Proton conductivity as a function of the metal center in porphyrinylphosphonate-based MOFs

2021 ◽  
Author(s):  
Yulia Yu. Enakieva ◽  
Ekaterina A. Zhigileva ◽  
Andrew N. Fitch ◽  
Vladimir V. Chernyshev ◽  
Irina A. Stenina ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Proton Conductivity ◽  
Metal Center ◽  
High Proton Conductivity ◽  
High Proton

New porphyrinylphosphonate MOFs possessing high proton conductivity (up to 10−2 S cm−1) together with superior chemical and thermal stability are described.

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