Na-ion O3-type layered oxides are prospective cathodes for Na-ion batteries due to high energy density and low-cost. Nevertheless, such cathodes usually suffer from phase transitions, sluggish ...

its freshly exposed shiny surface rapidly turns dull as a thin layer of sodium oxide forms: Other metals may oxidise more slowly. Gold and other very unreactive metals do not oxidise in air at all.

More information: Yi-Feng Liu et al, An air-stable single-crystal layered oxide cathode based on multifunctional structural ...

The shiny grey magnesium strip changes to a white powder called magnesium oxide. Learn more about making a reactivity series in this guide. For example, sodium is burned to make sodium oxide.

Indonesia’s National Disaster Management Agency (BNPB) has intensified cloud seeding efforts to address rainfall-related ...