Named after Gaston Planté - French physicist (1834-1889).
Planté is a lunar crater that is situated near the eastern inner wall of the much larger crater Keeler. Just to the east, attached to the exterior of Keeler, is the large crater Heaviside. Planté is located on the far side and cannot be viewed directly from the Earth. This crater has a sharp-edged rim and an interior floor that is wider along the southeastern half, possibly due to slumped material or ejecta deposits. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On the Moon they are named after deceased scientists, polar explorers, astronauts or cosmonauts.