Iron energy storage chemical equation

What is the nexus between clean electricity and decarbonized iron production?

The nexus between clean electricity, long-duration electrical energy storage using iron-air batteries, and decarbonized iron production For deep decarbonization of the energy system, affordable energy storage capable of bridging intermittencies in the multi-day to seasonal generation of renewable electricity is essential.

How does iron oxide reduction work?

The reduction of iron oxides, which equals the energy storage process, will be conducted in areas with excess of renewable energies. The obtained iron powder will be transported to areas where energy is required, e.g. populated or industrial areas. Iron is combusted and electricity is produced with a heat engine.

What is a single phase for reducing iron oxide with hydrogen?

For the reduction of iron oxide with hydrogen each oxide (Fe 2 O 3, Fe 3 O 4 and FeO) and iron is defined as single phase since mixing of solid species is not expected. Additionally, a gas phase with a volume of V gas = 20 mL is defined. The inlet volume flux is defined based on the experimental conditions ( V in = 100 mL min − 1 ).

What is the maximum power density for iron sulfate and iron nitrate electrolytes?

Tucker et al. examined Fe 2+ /Fe 3+ and H 2 /H + couples and recorded maximum power density values of 148, 207 and 234 mW cm −2 for iron sulfate, iron chloride and iron nitrate electrolytes, respectively (Tucker et al. 2013).

What is the power-to-power efficiency of iron as metal fuel?

The power-to-power efficiency of iron as metal fuel is 27%. Thermogravimetric experiments of Fe 2 O 3 reduction with H 2. Development of a reduction mechanism and kinetic data. Simulations and experimental data are in good agreement for varying conditions. Carbon-free and sustainable energy storage solutions are required to mitigate climate change.

What is the energy density of iron compared to coal?

Compared to coal, the volumetric energy density is comparable (Zn, Sn) or higher (Fe, Si, Al). Regarding the gravimetric energy density, aluminium (8.6 kW h kg −1) and silicon (9 kW h kg −1) are comparable to coal (6.4 kW h kg −1 ), while the energy density of iron is lower (2.1 kW h kg −1 ) .