Electrotroph

An electrotroph is a microorganism which can receive electrons necessary for its growth from an electrode (power supply) terminal or other electron donors.^[1]

Blacksmoker thermal vent

The chemolithoautotrophic bacterium Acidithiobacillus ferrooxidans, that lives in ocean thermal vents, has been shown to exhibit electrotrophic behavior in experiments.^[2] In particular, it switches the electron source for carbon assimilation from diffusible Fe²⁺
ions to an electrode under the condition that electrical current is the only source of energy and electrons.^[3]