Shen Neng Photovoltaic Energy Storage Hydrogen Production

What is solar PV-E for hydrogen production?

Solar PV-E for hydrogen production converts fluctuating PV electricity to stable chemical energy, and provides a stable and time-shifted energy source to support the power grid and address practical energy demands. In addition, the products of water electrolysis (H2, O 2) are produced separately at the two electrodes of the electrolytic cell.

How efficient is solar hydrogen production?

The most efficient solar hydrogen production schemes, which couple solar cells to electrolysis systems, reach solar-to-hydrogen (STH) energy conversion efficiencies of 30% at a laboratory scale3.

Is a stand-alone PV coupled electrolytic hydrogen production system feasible?

An energy management strategy was proposed for a stand-alone PV coupled electrolytic hydrogen production system [17 ], and the feasibility of this energy management strategy wasverified by specific experimental cases.

Can solar hydrogen production be scaled?

Our findings demonstrate that scaling of solar hydrogen production via photocatalytic overall water splitting to a size of 100 m 2 —by far the largest solar hydrogen production unit yet reported to our knowledge—is feasible, with further scaling in principle possible without efficiency degradation.

How does a solar energy system produce hydrogen stably?

Based on the energy management strategy of this system proposed above, the system produces hydrogen stablywhen the solar irradiance changes, i.e., the hydrogen production rate remains unchanged, and the constant electrolytic efficiency of 68.5% is obtained.

What is the energy management strategy for stand-alone PV hydrogen production systems?

Another energy management strategy for stand-alone PV hydrogen production systems has been proposed [ 18] with the aim ofreducing the battery size and loss by reducing the energy circulating in the battery, and the strategy has been validated in real operations.