用于阴离子交换膜燃料电池的聚（芴基芳基哌啶鎓）膜和离聚物。
Poly(fluorenyl aryl piperidinium) membranes and ionomers for anion exchange membrane fuel cells.
作者信息
Chen Nanjun, Wang Ho Hyun, Kim Sun Pyo, Kim Hae Min, Lee Won Hee, Hu Chuan, Bae Joon Yong, Sim Eun Seob, Chung Yong-Chae, Jang Jue-Hyuk, Yoo Sung Jong, Zhuang Yongbing, Lee Young Moo
机构信息
Department of Energy Engineering, College of Engineering, Hanyang University, Seoul, Republic of Korea.
Department of Materials Science and Engineering, College of Engineering, Hanyang University, Seoul, Republic of Korea.
出版信息
Nat Commun. 2021 Apr 22;12(1):2367. doi: 10.1038/s41467-021-22612-3.
Low-cost anion exchange membrane fuel cells have been investigated as a promising alternative to proton exchange membrane fuel cells for the last decade. The major barriers to the viability of anion exchange membrane fuel cells are their unsatisfactory key components-anion exchange ionomers and membranes. Here, we present a series of durable poly(fluorenyl aryl piperidinium) ionomers and membranes where the membranes possess high OH conductivity of 208 mS cm at 80 °C, low H permeability, excellent mechanical properties (84.5 MPa TS), and 2000 h ex-situ durability in 1 M NaOH at 80 °C, while the ionomers have high water vapor permeability and low phenyl adsorption. Based on our rational design of poly(fluorenyl aryl piperidinium) membranes and ionomers, we demonstrate alkaline fuel cell performances of 2.34 W cm in H-O and 1.25 W cm in H-air (CO-free) at 80 °C. The present cells can be operated stably under a 0.2 A cm current density for ~200 h.
在过去十年中，低成本阴离子交换膜燃料电池作为质子交换膜燃料电池的一种有前景的替代方案而受到研究。阴离子交换膜燃料电池可行性的主要障碍在于其关键组件——阴离子交换离聚物和膜——不尽人意。在此，我们展示了一系列耐用的聚（芴基芳基哌啶鎓）离聚物和膜，这些膜在80°C时具有208 mS cm的高OH传导率、低H渗透率、优异的机械性能（拉伸强度84.5 MPa）以及在80°C的1 M NaOH中2000小时的非原位耐久性，而离聚物具有高水蒸气渗透率和低苯基吸附。基于我们对聚（芴基芳基哌啶鎓）膜和离聚物的合理设计，我们展示了在80°C时，H-O体系中碱性燃料电池性能为2.34 W cm，H-空气（无CO）体系中为1.25 W cm。当前的电池在0.2 A cm的电流密度下可稳定运行约200小时。
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