| CPC C09K 5/16 (2013.01) [F25D 1/00 (2013.01); F28D 20/003 (2013.01); F28D 20/0034 (2013.01); F28D 2020/0047 (2013.01); Y02E 60/14 (2013.01)] | 12 Claims |

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1. A thermochemical energy device comprising a salt composition, said salt composition comprising a base and a hygroscopic salt, wherein the base comprises NaOH and wherein the hygroscopic salt comprises Na2S,
wherein the salt composition is present in a porous configuration.
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