Ions

Positive ions are called cations.

Source: tatoeba (1468095)

This air cleaner came pretty cheap when I bought it, but I'm rather suspicious of the "negative ions" it produces.

Source: tatoeba (1527890)

This is a reaction where charges are transferred by the insertion of ions into a solid host.

Source: tatoeba (5940064)

Inside the magnetosphere, the density of the space plasma—charged particles, like electrons and ions—is much lower than the plasma outside, where the solar wind prevails. The boundary, called the magnetopause, becomes unstable when the two different density regions move at different rates.

Source: tatoeba (6479012)