交联型聚(联苯-哌啶)阴离子交换膜制备与电解槽性能研究
Study on preparation of cross-linked poly(biphenyl-piperidine)anion exchange membrane and electrolyzer performance
张安然 1李黎明 1马颖 1肖文涛 1李非凡 1张玉广1
作者信息
- 1. 中船(邯郸)派瑞氢能科技有限公司,河北 邯郸 056010
- 折叠
摘要
为制备出同时具备高电导率和高稳定性的阴离子交换膜(AEM),以1,6-二溴己烷为交联剂,采用浇铸法制备了不同交联度的交联型聚(联苯-哌啶)AEM(PBP-Pip-x％膜,x代表交联度,取值分别为5、10和15).分别采用1H NMR和AFM对PBP-Pip-x％膜的结构和形貌等进行了表征,并以未交联的聚(联苯-哌啶)AEM(PBP-Pip膜)作为对照组,研究了PBP-Pip-x％膜的性能.结果表明,PBP-Pip-15％膜具有更好的微相分离结构,其电导率(99.14 mS/cm)较PBP-Pip膜的电导率(49.89 mS/cm)明显提高.PBP-Pip-15％膜表现出较好的碱稳定性,在1 mol/L KOH溶液中于80 ℃浸泡300 h后,其电导率为37.50 mS/cm,电导率保留率为79.73％.在设定条件(温度为80℃、1 mol/LKOH溶液中和小室电压为2.0 V)下,PBP-Pip-15％膜的电流密度为0.5A/cm2,并且在100 h内稳定性未发生明显改变.
Abstract
In order to prepare anion exchange membrane(AEM)with high conductivity and high stability,1,6-dibromohexane was used as crosslinking agent,and cross-linked poly(biphenyl-piperidine)AEM(PBP-Pip-x％membrane,x represents crosslinking degree and the values of x are 5,10 and 15,respectively)with different crosslinking degrees were prepared by casting method.The structures and morphologies of PBP-Pip-x％membranes were characterized by 1H NMR and AFM,respectively,and the properties of PBP-Pip-x％membranes were studied by using uncross-linked poly(biphenyl-piperidine)AEM(PBP-Pip membrane)as the control group.The results show that PBP-Pip-15％membrane has better microphase separation structure,and its conductivity(99.14 mS/cm)is significantly higher than that of the PBP-Pip membrane(49.89 mS/cm).PBP-Pip-15％membrane shows good alkali stability,and after soaking in 1 mol/L KOH solution at 80 ℃ for 300 h,the conductivity of PBP-Pip-15％membrane is 37.50 mS/cm and the conductivity retention rate is 79.73％.Under the set up conditions(temperature of 80 ℃,1 mol/L KOH solution and cell voltage of 2.0 V),the current density of PBP-Pip-15％membrane is 0.5 A/cm2,and the stability of PBP-Pip-15％membrane does not change significantly within 100 h.
关键词
交联结构/聚(联苯-哌啶)/阴离子交换膜/水电解技术Key words
cross-linked structure/poly(biphenyl-piperidine)/anion exchange membrane/water electrolysis technology引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据