The invention relates to a sorption gas storage device (1) comprising: - a sorption gas storage structure (10) comprising a sorption gas storage material, said storage structure (10) having an edge circumferential (B), - heating means (3) configured to heat the storage material, and facilitate the desorption of the gas, said heating means (3) comprising: ○ a first heating part (30) arranged in the structure of storage (10), at a distance from the circumferential edge (B), ○ a second heating part (32) arranged in the storage structure (10), at a distance from the circumferential edge (B) on the one hand, and from the first part heating (30) on the other hand, the first heating part (30) and the second heating part (32) defining between them a space in which a first portion (11) of the storage structure (10) extends.
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