Electric water electrolysis energy storage

How much energy does an industrial water electrolysis equipment use?

An industrial water electrolysis equipment using our catalysts delivered ultralow energy consumption of 4.30 kWh m −3H2 and record stability over 250 h (2,300 h lifetime by epitaxial method with 10% attenuation) under a high working current of 8,000 mA.

Can water electrolysis be used for flexible energy storage?

The development of SOEL systems and the proof of lifetime, pressurised operation and cycling stability have to be continued. The development of the last few years shows that water electrolysis is on its way to large-scale flexible energy-storage applications.

How is energy stored based on electrolysis?

Schematics of energy storage and utilization based on electrolysis. Surplus electrical energy from renewable sources can be stored via electrolysis as chemical fuels. The energy is extracted to levelize demand on the short time scale and to meet the need for fuel in seasons when the renewable supply is less available.

What is water electrolysis?

The conversion of electricity via water electrolysis and optionally subsequent synthesis together with CO or CO2 into a gaseous or liquid energy carrier enables a coupling of the electricity, chemical, mobility and heating sectors.

How much energy does a water electrolysis catalyst use?

The catalyst performing on an industrial water electrolysis equipment exhibited ultralow energy consumption of 4.30 kWh m −3H2 and recorded stability over 250 h at 8,000 mA, with the low hydrogen production cost of US$2.46/kg H2.

How does electrolysis work?

Electrolysis provides a key link between electrical energy and liquid fuel, either by direct electrosynthesis from CO 2 and water or through the generation of feedstocks for fuel synthesis, such as hydrogen and syngas.