Photovoltaic energy storage deep integration hydrogen production

How efficient is solar hydrogen production?

The theoretical efficiency of this solar hydrogen production system is 36.5% (Kaleibari et al., 2019). However, the energy obtained from the full-spectrum utilization of solar energy is predominantly thermal energy, with an electrical energy to thermal energy ratio of less than 1:2.

Can a solar photovoltaic-thermal hydrogen production system be based on full-spectrum utilization?

In this study, a solar photovoltaic-thermal hydrogen production system based on full-spectrum utilization is proposed. By using a spectral filter, longer-wavelength sunlight that cannot be utilized by photovoltaic cells is separated and converted into thermal energy.

What is solar water splitting for hydrogen production?

Introduction Solar water splitting for hydrogen production is a promising method for efficient solar energy storage (Kolb et al., 2022). Typical approaches for solar hydrogen production via water splitting include photovoltaic water electrolysis (Juarez-Casildo et al., 2022) and water-splitting thermochemical cycles (Ozcan et al., 2023a).

What is a solar-hydrogen system utilizing photovoltaic electrolysis?

Solar–Hydrogen System: In the solar–hydrogen system utilizing photovoltaic electrolysis, consistent grid operation was achieved during peak and off-peak solar hours. Hydrogen production during surplus solar energy periods enabled reliable energy supply during nighttime and cloudy periods, supplementing solar power generation.

What is a full-spectrum solar hydrogen production system?

A full-spectrum solar hydrogen production system is proposed. The electric and thermal energy supply-demand relationship is optimized. A solar-to-hydrogen efficiency of 39.0% is achieved in the proposed system. Energy losses associated with the solar-to-hydrogen pathway are analyzed.

How efficient is solar hydrogen production in high-temperature water electrolysis?

This approach enables the simultaneous utilization of electrical and thermal energies for high-temperature water electrolysis, thereby producing hydrogen. The theoretical efficiency of this solar hydrogen production system is 36.5% (Kaleibari et al., 2019).