Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10270665 | Electrochimica Acta | 2018 | 101 Pages |
Abstract
Herein, we demonstrate the fabrication of cross-linked membranes based on sulfonated poly(arylene ether ketone sulfone) containing pendant amino groups (AM-SPAEKS) and triazole-grafted 3-Glycidyloxypropyltrimethoxysilane (GT) cross-linkers by a sol-gel process, then the obtained cross-linked membranes are named as AMSP/GT membranes. The GT cross-linkers are synthesized by the ring-opening reaction of the epoxy group and 3-amino-1,2,4-triazole. The AMSP/GT cross-linked membranes exhibit excellent thermal, oxidation and dimensional stability. Furthermore, the AMSP/GT membranes possess a low methanol permeability coefficient (9.95â¯Ãâ¯10â7â¯cm2â¯sâ1 at 60â¯Â°C) due to the formation of cross-linked network structures. In addition, the proton conductivity and relative selectivity of the AMSP/GT membranes are higher, at elevated temperatures (>80â¯Â°C), than AM-SPAEKS membranes. The highest proton conductivity of 0.135â¯Sâ¯cmâ1 is demonstrated, for the AMSP/GT-30 membrane, at 100â¯Â°C. The relative selectivity of AMSP/GT-30 can reach 7.54â¯Ãâ¯104â¯S scmâ3 which is three times higher than that of the AM-SPAEKS, at 60â¯Â°C. These results indicate that the AMSP/GT membranes can be promising candidates for practical applications such as proton exchange fuel cells etc.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Hai Qiang Li, Xue Jiao Liu, Huiyun Yang, Zhe Wang, Jin He,