Abstract
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 × 10−1S 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.
Original language | English |
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Article number | 8114 |
Journal | Nature Communications |
Volume | 14 |
Issue number | 1 |
DOIs | |
State | Published - Dec 2023 |
Funding
We greatly acknowledge the financial support from National Natural Science Foundation of China (no. 22275143, 21875078), Key Project of Natural Science Basic Research Program of Shaanxi (no. 2023JC-XJ-14), and Qin Chuangyuan cited high level innovation and entrepreneurship talent project (no. QCYYRCXM−2022−23). S.D. was supported by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, US Department of Energy. We appreciate for the support in the characterizations from the Analysis and Testing Center of the Xi’an Jiaotong University. We greatly acknowledge the financial support from National Natural Science Foundation of China (no. 22275143, 21875078), Key Project of Natural Science Basic Research Program of Shaanxi (no. 2023JC-XJ-14), and Qin Chuangyuan cited high level innovation and entrepreneurship talent project (no. QCYYRCXM−2022−23). S.D. was supported by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, US Department of Energy. We appreciate for the support in the characterizations from the Analysis and Testing Center of the Xi’an Jiaotong University.
Funders | Funder number |
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Key Project of Natural Science Basic Research Program of Shaanxi | 2023JC-XJ-14 |
U.S. Department of Energy | |
Basic Energy Sciences | |
Chemical Sciences, Geosciences, and Biosciences Division | |
National Natural Science Foundation of China | 21875078, 22275143 |
Xi’an Jiaotong University |