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April 17, 2026Energy Storage

Integrating Metal Hydride‐Based Hydrogen Storage Tanks With PEM Fuel Cell Stacks for Enhanced Energy Efficiency in Underwater Applications

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Authors

BSBerna SezginTÖTayfur ÖztürkİEİnci Eroğlu

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Overview

Modeling integrates metal hydride-based hydrogen storage and PEM fuel cells, enhancing underwater energy efficiency.

Key Points

  • The research aims to optimize the integration of metal hydride hydrogen storage with PEM fuel cells for underwater applications.
  • Developed a model for coupling metal hydride storage systems with PEM fuel cell stacks.
  • Analyzed varying voltage and current density effects on hydrogen consumption and waste heat generation.
  • Designed a 360 kW PEM fuel cell system with specific hydrogen flow rate requirements.
  • Proposed a two-stage heat exchanger to manage thermal loads in underwater conditions.
  • Reducing cell voltage from 0.60 to 0.50 V increased hydrogen demand from 3.82 to 4.57 kg/h.
  • Fuel cell heat generation rose from 78.1 to 98.9 kW, an increase of over 30%.
  • Achieved a total hydrogen consumption of 22.9 kg/h with a 43.4% fuel cell efficiency.
  • Overall system efficiency reached 70.9% with a thermal coupling ratio of 0.48.

Cite This Study

Sezgin et al. (2026) studied this question.

synapsesocial.com/papers/69e1cf1b5cdc762e9d858141https://doi.org/10.1002/est2.70400
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  4. 4Fuel Cell heat recovery through Metal Hydrides and Phase Change Materials for the optimization of hydrogen supply2026 · 2 citations
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