Andaloussi_2019_Predisposed.pdf (1.53 MB)
Combined intrinsic and extrinsic proton conduction in robust covalent organic frameworks for hydrogen fuel cell applications
journal contribution
posted on 2020-03-06, 11:24 authored by Yi Yang, Penghui Zhang, Yassin H. Andaloussi, Hailu Zhang, Zhongyi Jiang, Yao Chen, Shengqian Ma, Peng Cheng, Zhenjie ZhangDeveloping new materials for the fabrication of proton exchange membranes (PEMs) for fuel cells is of great significance. Herein, a series of highly crystalline, porous, and stable new covalent organic frameworks (COFs) have been developed by a stepwise synthesis strategy. The synthesized COFs exhibit high hydrophilicity and excellent stability in strong acid or base (e.g., 12 m NaOH or HCl) and boiling water. These features make them ideal platforms for proton conduction applications. Upon loading with H3PO4, the COFs (H3PO4@COFs) realize an ultrahigh proton conductivity of 1.13×10−1 S cm−1, the highest among all COF materials, and maintain high proton conductivity across a wide relative humidity (40–100 %) and temperature range (20–80 °C). Furthermore, membrane electrode assemblies were fabricated using H3PO4@COFs as the solid electrolyte membrane for proton exchange resulting in a maximum power density of 81 mW cm−2 and a maximum current density of 456 mA cm−2, which exceeds all previously reported COF materials.
Funding
Photon field excitation dynamics of organic molecules surface-modified metal nanoparticles
Japan Society for the Promotion of Science
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Angewandte Chemie International Edition;59 (9), pp. 3678-3684Publisher
Wiley and Sons Ltd.,Note
peer-reviewedOther Funding information
Natural Science Foundation of ChinaRights
This is the author accepted peer reviewed version of the following articleAngewandte Chemie International Edition 2020 59 (9), pp. 3678-3684 Combined Intrinsic and Extrinsic Proton Conduction in Robust Covalent Organic Frameworks for Hydrogen Fuel Cell Applications Yi Yang Xueyi He Penghui Zhang Yassin H. Andaloussi Prof. Hailu Zhang Prof. Zhongyi Jiang Prof. Yao Chen Prof. Shengqian Ma Prof. Peng Cheng Prof. Zhenjie Zhang: , which has been published in final form athttps://doi.org/10.1002/anie.201913802 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. http://olabout.wiley.com/WileyCDA/Section/id-828039.html#termsLanguage
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