Novel proton exchange membranes based on water resistant sulfonated poly[bis(benzimidazobenzisoquinolinones)]
Li, Nanwen1,2; Li, Shenghai1; Zhang, Suobo1; Wang, Junhua1,2
AbstractNovel water resistant sulfonated poly[bis(benzimidazobenzisoquinolinones)] (SPBIBIs) were synthesized from 6,6'-disulfonic-4,4'-binaphthy]-1,1',8,8'-tetracarboxylic dianhydride (SBTDA) and various aromatic ether tetraamines. The resulting polymers with IEC in the range of 2.17-2.87 mequiv g(-1) have a combination of desired properties such as high solubility in common organic solvents, film-forming ability, and excellent thermal and mechanical properties. Flexible and tough membranes, obtained by casting from m-cresol solution, had tensile strength, elongation at break, and tensile modulus values in the range of 87.6-98.4 MPa, 35.8-52.8%, and 0.94-1.07 GPa. SPBIBI membranes with a high degree of sulfonation displayed high proton conductivity and a good resistance to water swelling as well. SPBIBI-b with IEC of 2.80 mequiv g(-1) displayed the conductivity of 1.74 x 10(-1) S cm(-1) at 100 degrees C, which was comparable to that of Nafion (R) 117 (1.78 x 10(-1) S cm(-1), at 100 degrees C). However, the water swelling ratio of SPBIBI-b membranes was merely 8% at 100 degrees C while the Nafion (R) 117 was 21.5%. The low swelling ratio was attributed to the strong intermolecular interaction including the electrostatic force and hydrogen bond. Moreover, they also exhibited much better hydrolytic stability than other sulfonated aromatic polymers such as polyimides. Consequently, these materials proved to be promising as proton exchange membranes. (c) 2008 Elsevier B.V. All rights reserved.
KeywordProton Exchange Membrane Fuel Cells Sulfonated Poly[Bis(Benzimidazobenzisoquinolinones)] Proton Conductivity
Indexed BySCI
WOS IDWOS:000263306300009
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Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZhang, Suobo
Affiliation1.Acad Sinica, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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GB/T 7714
Li, Nanwen,Li, Shenghai,Zhang, Suobo,et al. Novel proton exchange membranes based on water resistant sulfonated poly[bis(benzimidazobenzisoquinolinones)][J]. JOURNAL OF POWER SOURCES,2009,187(1):67-73.
APA Li, Nanwen,Li, Shenghai,Zhang, Suobo,&Wang, Junhua.(2009).Novel proton exchange membranes based on water resistant sulfonated poly[bis(benzimidazobenzisoquinolinones)].JOURNAL OF POWER SOURCES,187(1),67-73.
MLA Li, Nanwen,et al."Novel proton exchange membranes based on water resistant sulfonated poly[bis(benzimidazobenzisoquinolinones)]".JOURNAL OF POWER SOURCES 187.1(2009):67-73.
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