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<p>This study introduces a mathematical model of a sustainable electricity generation system whose energy source is from aluminum and water. The system is composed by a batch reactor for greenhouse gas-free hydrogen (H<sub>2</sub>) generation, a gas dehumidifier, a 5 kW Proton Exchange Membrane Fuel Cell (PEMFC) stack and ancillary equipment. A transient mathematical model for hydrogen and electricity generation was conceived based on mass, energy and species conservation principles, and was experimentally validated. The mobile system prototype was mounted on an automotive trailer with the intention to be applied as a range extender (REX) device to electric vehicles (EV) or even provide total independence of battery charging stations, assuming that aluminum, water and catalyst (NaOH) are available. The numerical results were shown to be in good qualitative and quantitative agreement with experimental data and give insight on the main operating parameters that must be considered to control the system. Notably, the approach contributes to mitigate adverse environmental effects associated with fossil fuel use, leveraging residual aluminum—an abundant global waste. In essence, the herein sustainable, in situ production of green hydrogen and electricity places the hydrogen generation &amp; fuel cell system technology in the category of a clean and renewable energy source. Therefore, the system is expected to be applicable to electric vehicles, all electric ships and stationary distributed power generation.</p>

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Green H2 Electricity Derived from Reacting Water and Aluminum Catalyzed by Sodium Hydroxide

  • 期刊论文

  • 发表日期：

    2025年1月9日

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  • Henrique P. Guerra,
  • José V. C. Vargas,
  • Rodrigo C. Raimundo,
  • Dhyogo M. Taher,
  • Lauber S. Martins,
  • Stephan H. Och,
  • Diogo B. Pitz,
  • André B. Mariano,
  • Lucio Cardozo-Filho,
  • G. S. Venter,
  • Juan C. Ordonez

摘要

This study introduces a mathematical model of a sustainable electricity generation system whose energy source is from aluminum and water. The system is composed by a batch reactor for greenhouse gas-free hydrogen (H2) generation, a gas dehumidifier, a 5 kW Proton Exchange Membrane Fuel Cell (PEMFC) stack and ancillary equipment. A transient mathematical model for hydrogen and electricity generation was conceived based on mass, energy and species conservation principles, and was experimentally validated. The mobile system prototype was mounted on an automotive trailer with the intention to be applied as a range extender (REX) device to electric vehicles (EV) or even provide total independence of battery charging stations, assuming that aluminum, water and catalyst (NaOH) are available. The numerical results were shown to be in good qualitative and quantitative agreement with experimental data and give insight on the main operating parameters that must be considered to control the system. Notably, the approach contributes to mitigate adverse environmental effects associated with fossil fuel use, leveraging residual aluminum—an abundant global waste. In essence, the herein sustainable, in situ production of green hydrogen and electricity places the hydrogen generation & fuel cell system technology in the category of a clean and renewable energy source. Therefore, the system is expected to be applicable to electric vehicles, all electric ships and stationary distributed power generation.