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Synergistic effect of SiO2 on proton conduction and thermal behavior for nanocomposite electrolyte CsH2PO4 fuel cells

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Abstract

Solid acid composite electrolytes (1−x)CsH2PO4(CDP)/xSiO2 (0 ≤ x ≤ 0.35) were prepared and observed the structural, thermal, and transport properties by XRD, EDX, FESEM, FTIR, DSC, TGA, DTA, and conductivity measurements. The crystallite size was obtained between the range of 36 and 64 nm. We have investigated the superprotonic phase transition at 230 °C in CDP, at which the conductivity increased up to four orders of magnitude. The initial dehydration event in CDP occurred at 250 °C. The performance of CDP was increased due to the addition of SiO2 in the form of conductivity and stability. Thermal characterization showed that by introducing the additives, dehydration behavior shifted to the lower in DSC and DTA at the higher temperature. The lowest weight loss was found in 65CDP/35SiO2. The stable protonic conductivity was observed with time for CDP, 95CDP/05SiO2, and 85CDP/15SiO2 in a hermetically closed chamber. The electrodes were prepared by vapor deposition of silver.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This study was performed according to the plan of research works of K.G.K. College affiliated to M.J.P. Rohilkhand University, Bareilly (India). The authors are thankful to Gurukula Kangri Vishwavidyalaya Haridwar (India) for providing the necessary facilities in the Material Science Research Lab.

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Authors and Affiliations

  1. Department of Physics, K.G.K. College Moradabad, M.J.P. Rohilkhand University, Bareilly, 243006, India

    Deshraj Singh & Jitendra Singh

  2. Department of Physics, Gurukul Kangri University, Haridwar, 249404, India

    Dharm Veer & Pawan Kumar

  3. Department of Physics, University of Puerto Rico, San Juan, PR-00931, USA

    Ram S. Katiyar

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Contributions

DS and DV contributed to conceptualization, DS, DV, and PK contributed to methodology, JS, PK, and RSK contributed to formal analysis and investigation, DS and DV contributed to writing and preparation of the original draft, JS, PK, and RSK contributed to writing, reviewing, and editing of the manuscript, JS and PK contributed to funding acquisition, RSK contributed to resources, and JS and PK performed supervision.

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Correspondence to Pawan Kumar.

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Singh, D., Singh, J., Veer, D. et al. Synergistic effect of SiO2 on proton conduction and thermal behavior for nanocomposite electrolyte CsH2PO4 fuel cells. J Mater Sci: Mater Electron 33, 6524–6535 (2022). https://doi.org/10.1007/s10854-022-07827-4

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