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Strontium-substituted phosphomolybdate anchored on Ba0.5Sr0.5TiO3 thin films towards electrocatalytic hydrogen storage application

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  • Mohajeri, Bahareh
  • Shaterian, Maryam
  • Rezvani, Mohammad Ali

Abstract

Hydrogen recognized for its high energy density and minimal environmental impact, is a promising candidate for renewable energy. However, efficient hydrogen storage is still a critical challenge. This study addresses this gap by exploring the synthesis and characterization of a new nanocomposite based on strontium(II)-coordinated polyoxometalate (PMo10Sr2) immobilized on barium strontium titanate (Ba0.5Sr0.5TiO3, abbreviated as BST) thin films for electrochemical hydrogen storage application. Characterization studies were performed using FT-IR, XRD, FE-SEM, UV–vis, EDX, and BET analyses. The hydrogen storage capacity (HSC) of the PMo10Sr2@BST was evaluated through chronopotentiometry (CHP) test in 6.0 M KOH electrolyte. After 15 cycles, the HSC of pristine Keggin-type PMo10Sr2 and BST were determined to be 1592.21 and 1349.51 mAhg−1, respectively, at the optimal current of 1.0 mA. Notably, the PMo10Sr2@BST nanocomposite exhibited a significant HSC of 2626.75 mAh/g after 15th cycle under the same conditions. These findings demonstrate the potential of the PMo10Sr2@BST nanocomposite as an efficient hydrogen storage material, paving the way for advancements in clean energy technology.

Suggested Citation

  • Mohajeri, Bahareh & Shaterian, Maryam & Rezvani, Mohammad Ali, 2025. "Strontium-substituted phosphomolybdate anchored on Ba0.5Sr0.5TiO3 thin films towards electrocatalytic hydrogen storage application," Energy, Elsevier, vol. 335(C).
    • Handle: RePEc:eee:energy:v:335:y:2025:i:c:s0360544225037247
    DOI: 10.1016/j.energy.2025.138082
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    References listed on IDEAS

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    1. Damien Guilbert & Gianpaolo Vitale, 2021. "Hydrogen as a Clean and Sustainable Energy Vector for Global Transition from Fossil-Based to Zero-Carbon," Clean Technol., MDPI, vol. 3(4), pages 1-29, December.
    2. Shashi Sharma & Shivani Agarwal & Ankur Jain, 2021. "Significance of Hydrogen as Economic and Environmentally Friendly Fuel," Energies, MDPI, vol. 14(21), pages 1-28, November.
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