A highly proton conductive perfluorinated covalent triazine framework via low-temperature synthesis
Journal Article
·
· Nature Communications
- Xi’an Jiaotong University, Shaanxi (China)
- Northwest University, Xi’an, Shaanxi (China)
- Huazhong Agricultural University, Wuhan (China)
- Chinese Academy of Sciences, Lanzhou (China)
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Proton-conducting materials are essential to the emerging hydrogen economy. Covalent triazine frameworks (CTFs) are promising proton-conducting materials at high temperatures but need more effective sites to strengthen interaction for proton carriers. However, their construction and design in a concise condition are still challenges. Herein, we show a low temperature approach to synthesize CTFs via a direct cyclotrimerization of aromatic aldehyde using ammonium iodide as facile nitrogen source. Among the CTFs, the perfluorinated CTF (CTF-TF) was successfully synthesized with much lower temperature ( ≤ 160 °C) and open-air atmosphere. Due to the additional hydrogen-bonding interaction between fluorine atoms and proton carriers (H3PO4), the CTF-TF achieves a proton conductivity of 1.82 × 10-1 S cm-1 at 150 °C after H3PO4 loading. Moreover, the CTF-TF can be readily integrated into mixed matrix membranes, displaying high proton conduction abilities and good mechanical strength. This work provides an alternative strategy for rational design of proton conducting media.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); National Natural Science Foundation of China; Key Project of Natural Science Basic Research Program of Shaanxi; Qin Chuangyuan cited high level innovation and entrepreneurship talent project
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 2471476
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 14; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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