Hydrogen store having a liquid piston

Abstract

The invention relates to a hydrogen compressor and/or displacer, in particular a hydrogen reservoir for storing hydrogen, comprising: a hydrogen volume filled with hydrogen, and a working fluid volume filled with a working fluid, wherein the working fluid is designed as a piston for changing the hydrogen volume, characterized in that the working fluid comprises a polyalphaolefin. The invention further relates to a method for displacing and/or compressing hydrogen, comprising the steps of: (a) providing the hydrogen compressor and/or displacer according to the invention, and (b) replenishing working fluid into the hydrogen compressor and/or displacer, such that the working fluid volume of the hydrogen compressor and/or displacer is increased and the hydrogen volume of the hydrogen compressor and/or displacer is reduced.

Dependencies are inferred from the claim text.