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A parametric study of crystal structure, phase stability, and conductivity of the novel phosphate-based composite electrolyte

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Abstract

This novel research focused on synthesizing a series of new proton conductive electrolytes of CsH2PO4 and CeP2O7 by chemical reaction method, in which phase purity, functional groups, thermal stability, and ionic conductivity were investigated. The composite electrolyte showed improvement in conductivity by about 4 orders of magnitude with oxide ion conduction observed with a value of 4.16 × 10–2 S cm–1. This work provides a comprehensive view of the underlying oxide ion migration mechanism for CsH2PO4 with tetravalent pyrophosphate-based composites. CsH2PO4 and pyrophosphate have gained significant interest as proton conductors for electrolyte application. The crystal growth approach developed here will prove useful for obtaining compounds that are thermodynamically favorable at temperatures close to ambient and the composite electrolytes confirm the practical suitability of the presented material to be used for intermediate-temperature fuel cells.

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Acknowledgements

We would like to support and thank the Material Science Laboratory, Gurukul Kangri (Deemed to be University) Haridwar, Uttarakhand, India.

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Authors and Affiliations

  1. Department of Physics, Gurukul Kangri (Deemed to Be University), Haridwar, 249404, India

    Pawan Kumar & Dharm Veer

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

    Deshraj Singh

  3. Department of Chemistry, J. N. V. University, Jodhpur, Rajasthan, 342011, India

    Shanker Lal Meena

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All authors read and approved the final manuscript. Dharm Veer & Deshraj Singh: Conceptualization and experimentation. Pawan Kumar: Writing manuscript and taking correspondence.

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Correspondence to Pawan Kumar.

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Kumar, P., Veer, D., Singh, D. et al. A parametric study of crystal structure, phase stability, and conductivity of the novel phosphate-based composite electrolyte. Appl. Phys. A 130, 249 (2024). https://doi.org/10.1007/s00339-024-07414-w

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