Blend membranes from poly(2,5-benzimidazole) and poly(styrene sulfonic acid) as proton-conducting polymer electrolytes for fuel cells

Benzimidazole effect on the performance of polyelectrolyte membranes based on sulfonated hydrocarbon resin

“…g −1 . The interaction between acidic sulfonic groups and basic imidazole rings was previously highlighted by Jouanneau and Li [35,36] and others [6,[37][38][39][40].…”

Preparation of proton selective membranes through constructing H+ transfer channels by acid–base pairs

“…As shown in Fig. 3, the shoulder near 3115 cm À 1 is the result of N þ -H stretching indicating the protonation of the imidazole ring of the PVI, and the small broad peak at 2633 cm À 1 is due to the formation of hydrogen bonding networks [16,17]. The formation of the acid-base complex between the imidazole groups and the sulfonic groups is elucidated from the symmetric stretching of the sulfonic group (v s , SO 3 À ) at 1055 cm À 1 and the antisymmetric stretching of the sulfonic group (v a , SO 3 À ) at 1220 cm À 1 .…”

Synthesis of Polymer Electrolyte Membrane based on Acid-Base Complex Pair and Its Characteristics

“…Acid-base complex pair sulfonated polysulfone and Btri are shown in Figure 6. Moreover, previous studies of the interaction acid-base complex pair between poly(2,5 benzimidazole) and poly(styrene sulfonic acid) have been reported by Acar, et al [9]; more details are shown in Table 2. Figure 7 shows the thermograms of PSU polymer, SPSU, SPSBTri0.5 and SPSBTri1.…”

“…In the last decade, nitrogen-containing heterocycle compounds such as imidazole [7], benzimidazole [8,9] and triazole derivatives [10][11][12][13] have been reported to be promising protonic charge carriers in anhydrous state. Proton conduction in these systems may occur through a mechanism where protons are transferred by a hydrogen-bond breaking and forming process without the involvement of water acting as a carrier [7,14,15].…”