METHOD FOR IMPROVING THE HYDROGEN SORPTION CHARACTERISTICS OF A POWDER FILLING OF A METAL HYDRIDE HYDROGEN ACCUMULATOR Russian patent published in 2021 - IPC H01M4/38 

FIELD: hydrogen energy.

SUBSTANCE: invention relates to the field of hydrogen energy, and more precisely to the technology of compact, safe and reversible storage (accumulation) of hydrogen in a bound state in the form of atoms. The accumulation of hydrogen is carried out using metallic materials (metals, alloys or intermetallic compounds) that reversibly interact with hydrogen. Based on such materials, it is possible to create a device for storing hydrogen (metal hydride hydrogen accumulator), which absorbs hydrogen at an external hydrogen pressure above the hydride formation pressure or at an external temperature below the dehydrogenation temperature (the accumulator performs a hydrogen absorption cycle), and at a hydrogen pressure below the hydride decomposition pressure or temperatures above the dehydrogenation temperature produces hydrogen (the battery is performing a hydrogen evolution cycle). The method consists in the fact that the composition of the metal hydride filling of hydrogen accumulators is a homogeneous mixture of various metal hydride materials formed in a certain way, and the external operating parameters (temperature and pressure) change in a certain way during the absorption cycle or the hydrogen evolution cycle. Additionally, light highly dispersed heat-conducting elements that do not react with hydrogen and with a metal hydride backfill are introduced into the composition of the metal-hydride filling of hydrogen accumulators, which make it possible to reduce the sintering capacity of the powders of the metal-hydride filling during the cycles of hydrogen absorption-release.

EFFECT: invention increases efficiency, life of metal hydride hydrogen accumulators.

6 cl, 4 ex