Abstract
The Unitized Regenerative Fuel Cell (URFC) is an advanced energy storage system that integrates a fuel cell and an electrolysis cell. In this paper, MATLAB/Simulink is used to construct mathematical models of URFC. Through the steady-state simulation, it is found that with the increase in temperature, the output voltage of fuel cell mode increases, and the electrolysis mode voltage decreases. The highest efficiency reaches 41.8% at 80°C. As the pressure increases, the performance of URFC improves but requires good packaging and gas sealing. 1 MPa is the optimal pressure value considering URFC operating efficiency.
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