Sulfonated Triazine-Based Porous Organic Polymers for Excellent Proton Conductivity

Zhongping Li, Zhaohan Liu, He Li, Mdmahmudul Hasan, Athchaya Suwansoontorn, Gang Du, Dongjin Wang, Yuwei Zhang, Yuki Nagao*

*この研究の対応する著者

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Proton-exchange membrane fuel cells (PEMFCs) are a highly promising green and environmentally friendly way to serve the sustainable development of human civilization. However, high-cost synthesis and pollution problems of perfluorinated sulfonic acid membranes are still not resolved. In this research, we designed and constructed porous organic polymers (POPs) with high porosity and excellent stability via the Friedel-Crafts acylation reaction using commercial products as building blocks and low-cost FeCl3 as a catalyst through a simple operation. POP-BP-1 was successfully synthesized using 1,4-bis(chloromethyl)benzene as a cross-linking agent and reactant. POP-BP-TPOT was prepared using 2,4,6-Triphenoxy-1,3,5-Triazine (TPOT) as a building unit into the skeleton of POP-BP-1. Sulfonated POPs (S-POPs) were densely decorated with sulfonic acid groups by postsulfonation. POP-BP-TPOT with abundant triazine units and sulfonic acid groups showed high water uptake. The sulfonated triazine-based polymer showed excellent proton conductivity up to 10-2 S cm-1 at 95% relative humidity (RH) under 25 °C and low activation energy of 0.19 eV. Fuel-cell test was also demonstrated using the polymer. This research suggests that the construction of S-POPs opens a suitable method to design high proton-conducting materials.

本文言語English
ページ(範囲)3267-3273
ページ数7
ジャーナルACS Applied Polymer Materials
2
8
DOI
出版ステータスPublished - 2020 8月 14
外部発表はい

ASJC Scopus subject areas

  • ポリマーおよびプラスチック
  • プロセス化学およびプロセス工学
  • 有機化学

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