Journal of Power Sources ( IF 8.1 ) Pub Date : 2020-03-27 , DOI: 10.1016/j.jpowsour.2020.227838 Juanjuan Han , Bencai Lin , Hanqing Peng , Yuchan Zhu , Zhandong Ren , Li Xiao , Lin Zhuang
In order to achieve a better trade-off among ionic conductivity, mechanical strength and chemical stability, a series of novel aggregated and ionic cross-linked anion exchange membranes (AEMs) are recommended, namely, acS6QAPSF, acS8QAPSF and acS10QAPSF. Cross-linked network shoulders the responsibility to toughen the acSxQAPSF. Appropriate micro-morphology is responsible for facilitating the conduction of OH− and improving the alkaline stability of the acSxQAPSF. Compared with the original QAPSF, acSxQAPSF membranes exhibit much better properties. Specifically, for acS8QAPSF, a high OH− conductivity of 90.5 mS cm−1 is achieved at 80 °C, with the swelling degree of 10.0%. The tensile strength and elongation at break of wet acS8QAPSF at 25 °C are 23.9 Mpa and 21.1%, respectively. After testing in 1 M NaOH at 80 °C for 30 days, the weight loss of acS8QAPSF is 8.0%, with the losses of tensile strength and elongation at break of 13.8% and 13.3%, respectively. Its IEC and IC retentions are 92.0% and 90.5%, respectively. For acS8QAPSF, a fuel cell peak power density of 0.612 W cm−2 is obtained at 60 °C. While for QAPSF, its fuel cell peak power density is only 0.101 W cm−2, and the film is cracked after the 30 days stability test.
中文翻译:
具有增强的氢氧化物传导性和稳定性的聚集和离子交联阴离子交换膜
为了在离子电导率,机械强度和化学稳定性之间取得更好的平衡,建议使用一系列新型的聚集和离子交联阴离子交换膜(acs 6 QAPSF,ac S 8 QAPSF和ac S 6 QAPSF)。ac S 10 QAPSF。交联网络肩负着加强ac S x QAPSF的责任。适当的微形态是负责促进OH的导通-和改善的碱稳定性交流小号X QAPSF。与原始QAPSF相比,ac S xQAPSF膜表现出更好的性能。具体而言,交流š 8 QAPSF,高OH - 90.5毫秒cm的电导率-1在80℃下实现的,与10.0%的溶胀度。湿ac S 8 QAPSF在25°C下的抗张强度和断裂伸长率分别为23.9 Mpa和21.1%。在80°C的1 M NaOH中测试30天后,ac S 8 QAPSF的重量损失为8.0%,拉伸强度和断裂伸长率的损失分别为13.8%和13.3%。其IEC和IC保留率分别为92.0%和90.5%。对于ac S 8 QAPSF,燃料电池的峰值功率密度为0.612 W cm在60℃下获得-2。对于QAPSF,其燃料电池的峰值功率密度仅为0.101 W cm -2,并且在30天的稳定性测试后膜破裂。