Metal powder: Zero-carbon fuel for the future?

https://techxplore.com/news/2022-09-metal-powder-zero-carbon-fuel-future.html

"Storing energy in metals and burning them to free the energy whenever needed is a method already applied in aerospace technology. Our aim was to understand what exactly happens at the micro- and nanoscale during the reduction and combustion of iron... process circular without losses in energy or material... energy stored in reduced iron... oxidizing iron back to iron oxide... iron ore reduced to iron and energy stored"

Related: 

Ultrasmall swirling magnetic vortices detected in iron-containing material

https://phys.org/news/2023-03-ultrasmall-swirling-magnetic-vortices-iron-containing.html

Can we burn metal for heat, instead of fossil fuels?

https://www.freethink.com/energy/burning-iron

Welcome to the new Iron Age: iron can generate eternal energy

https://scienceillustrated.com/technology/welcome-to-the-new-iron-age-iron-can-generate-eternal-energy