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Researchers developed an electrostatic induction potential superposed hydrogen electrolyzer to produce H2-O2 fuel for fuel cells, achieving a breakthrough in self-sustaining electric power generation systems.

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System
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Abstract

SUMMARY Toward achieving a breakthrough in self‐sustaining electric power generation systems consisting of a hydrogen energy cycle, we demonstrate an electrostatic induction potential superposed hydrogen electrolyzer to produce stoichiometric H ‐O fuel for fuel cells. This electrolytic system operates by a mechanism in which the total power requirement is given by the product of the electrolytic current and the additional voltage over the decomposition voltage. In order to achieve the highest energy efficiency for the fuel cell and full sustainability for the fuel, a combined cycle of an H ‐O fuel cell and this type of electrolyzer is introduced. Part of the power delivered by the fuel cell is returned to the electrolyzer, and the remainder represents the net power output. According to theoretical calculations, the net power output exceeds 70% of that delivered by the H ‐O fuel cell, without violating the laws of thermodynamics.

Key findings

  • The electrolytic system operates by a mechanism where the total power requirement is given by the product of the electrolytic current and the additional voltage over the decomposition voltage.
  • A combined cycle of an H2-O2 fuel cell and electrolyzer achieves the highest energy efficiency and full sustainability for the fuel.
  • The system demonstrates a breakthrough in self-sustaining electric power generation systems consisting of a hydrogen energy cycle.

Keywords

Hydrogen fuelHigh-pressure electrolysisPolymer electrolyte membrane electrolysisElectrolysisNuclear engineeringAlkaline water electrolysis

Identifiers

DOI
10.1002/eej.22815
Journal
Electrical Engineering in Japan
Year
2015