Thermal cure-induced crosslinked polybenzimidazole containing 4,5-diazafluorene and pyridine for high-temperature proton exchange membrane

Recent advances in non-perfluorinated sulfonic acid proton exchange membranes in the energy field

“…Subsequently, the chemical bonds of the material are broken and recombined under high-temperature conditions, resulting in the formation of a new cross-linked structure. 44,45 The impact of thermal crosslinking on membrane properties is typically manifested in physicochemical stability and proton conduction properties (Fig. 3a).…”

Progress in High Temperature Proton Exchange Membranes for Fuel Cell

“…1.4 引入碱性基团 在PBI主链中引入碱性基团 [31] 可以增加对磷酸分子亲附力，有效地提高磷酸掺 杂率，表现出较高的质子传导率。 Jana等 [32] 使用2，6-双(3′，4′-二氨基苯基) 并咪唑(PB-PBI [33] ，如图8所示)。将扭曲、非共 面二氮芴(Cardo型)结构 [34][35][36][37] 引入PBI主链中， 可以打乱分子链的有序堆叠提高聚合物的溶解加 工性。在280℃、315℃和350℃条件下制备了一系 列热固化的PBPBI膜。芬顿试验结果表明，交联膜 表 2 TADPS-IPA、TADPS-TPA、TADPS-OBA和m-PBI在各溶剂 中的溶解性 [27] Table 2 Solubility of TADPS-IPA,TADPS-TPA,TADPS-OBA and m-PBI in various solvents [27] 聚合物 NMP DMAc DMSO THF…”

“…图 8 PB-PBI的合成 [33] Figure 8 Synthesis of PB-PBI [33] 李杰, 等. 燃料电池高温质子交换膜的研究进展 Henkensmeier等 [39] 使用热交联的方法制备了 PBI/磺化聚砜的共混膜(如图10所示)。该方法利…”