The high concentration of dissolved salt ions in the electrolyte increases the conductivity.

This has the effect of increasing the conductivity even before the system has condensed into the superconducting state.

Various additives are often applied to increase the conductivity of such systems.

Pure water is a poor conductor, so ions increase the conductivity dramatically.

The manganese dioxide is mixed with carbon powder to increase the electrical conductivity.

Increasing the conductivity in a surface results in less dissipation.

"Strychnine is absorbed into the nervous system and it increases the conductivity of the spinal cord."

This increases the ionic conductivity and results in a better electrolyte.

Increasing the conductivity is a key issue for thermoelectric applications of these borides.

Both of those make ions in water and will increase the conductivity of the water.