State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, School of Science , Beijing University of Chemical Technology , Beijing 100029 , P. R. China.
ACS Appl Mater Interfaces. 2018 May 9;10(18):15720-15732. doi: 10.1021/acsami.8b02884. Epub 2018 Apr 24.
In response to prepare high-stable and ion-conducting polyelectrolyte for hydroxide exchange membrane (HEM) applications, we present an ultrastable polyelectrolyte based on six-membered heterocyclic 6-azonia-spiro[5.5]undecane (ASU) and polyphenyl ether (PPO). A series of ASU-functionalized PPO polyelectrolytes (ASU-PPO), which can be easily dissolved in low-boiling pointing solvent, have been successfully synthesized by a remote-grafting method. The ASU precursor is stable in 1 M NaOH/DO at 80 °C for 2500 h as well as in 5 M NaOH/DO at 80 °C for 2000 h, and the predicted half-life of the ASU precursor would exceed 10 000 h, even higher in the future. Besides, these remote-grafting ASU-PPO polyelectrolytes are stable in 1 M NaOH at 80 °C for 1500 h. Robust and pellucid segmented ASU and triple-ammonium-functionalized PPO-based HEMs attach OH conductivity of 96 mS/cm at 80 °C and realize maximal power density of 178 mW/cm under current density of 401 mA/cm.
为了制备用于氢氧化物交换膜 (HEM) 的高稳定和离子传导的聚电解质，我们提出了一种基于六元杂环 6-氮杂螺[5.5]十一烷 (ASU) 和聚苯醚 (PPO) 的超稳定聚电解质。通过远程接枝法成功合成了一系列可溶于低沸点溶剂的 ASU 功能化 PPO 聚电解质 (ASU-PPO)。ASU 前体在 1 M NaOH/DO 中于 80°C 下稳定 2500 h，在 5 M NaOH/DO 中于 80°C 下稳定 2000 h，预计 ASU 前体的半衰期将超过 10000 h，未来甚至更高。此外，这些远程接枝 ASU-PPO 聚电解质在 80°C 的 1 M NaOH 中稳定 1500 h。坚固透明的分段 ASU 和三铵官能化 PPO 基 HEM 在 80°C 时具有 96 mS/cm 的 OH 电导率，并在 401 mA/cm 的电流密度下实现了 178 mW/cm 的最大功率密度。
