A storage container for storing a cryogen, comprising an inner container for receiving the cryogen and an outer container in which the inner container is accommodated, wherein the outer container has reinforcing rings for reinforcing the outer container and the outer container has a support element which is made of a composite material and of which at least some portions are arranged within a gap between two neighboring reinforcing rings, in order to support the reinforcing rings.

Disclosed is a cryogenic storage tank including an inner wall (50) and an outer wall (52) defining a space (56), wherein the space is filled at least in part with dried-in-place hollow glass microspheres which provides both insulating and structural properties to maintain the space, and methods for forming the cryogenic storage tank. Also disclosed is a cryogenic storage tank including an inner wall and an outer wall defining a space, wherein the inner wall and outer wall are spaced from one another by magnetic repulsion. In one embodiment the inner wall includes a high temperature superconducting material embedded in or on a surface of the inner wall, and the outer wall has a conventional magnet embedded in or on a surface of the outer wall.