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In this work, we have successfully synthesized cellulose nanocrystals-Imidazole (CNC/Im) composite, capable of proton conductivity under low humidity conditions for applications in the fuel cell field. The composition, structure, and morphology of prepared CNC/Im material were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscope (SEM). The thermal properties and proton conductivity of CNC/Im were determined and compared with that of pure cellulose nanocrystals. electrochemical impedance spectroscopy (EIS) analysis showed that the obtained proton conductivity of CNC/Im under a relative humidity of 40% at 30oC was significantly improved, six times higher than that of pure CNC. This value depends on the n index (the linked Im in the molar ratio to glucose units). In this study, the n index was determined based on the equation from the analysis of the differential scanning calorimetry (DSC) diagrams and got the value of n equal to 1:17. In addition, thermogravimetric analysis (TGA) results also indicated that CNC/Im composite material has higher thermal stability than CNC. This CNC/Im composite will be a promising candidate for solid proton conductive membrane in fuel cell operating in low humidity conditions.

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Article Details

Issue: Vol 5 No 4 (2021): Vol 5, Issue 4: Under publishing
Page No.: In press
Published: Nov 11, 2021
Section: Original Research

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Creative Commons License

Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
Vu, A., Nguyen, T. V., Le, N. P., Le, T. P., Le, N. H., & Le, H. (2021). Preparation of a “green” composite based on imidazole and nanocrystalline cellulose for fuel cell application. Science and Technology Development Journal - Natural Sciences, 5(4), In press.

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