▎ 摘　　要

NOVELTY - A material comprises active substance that allows transport of volatile liquid in gas phase to and from greater than or equal to 1 part of active substance in which greater than or equal to 1 part of material is in thermal contact with surroundings, and flakes of graphene and graphene oxide having lateral size of 100-10000 nm and thickness of 0.34-5 nm. USE - A material for chemical heat pump (claimed). ADVANTAGE - Heat transfer to and from active substance, ability of matrix to hold active substance in liquid state and mechanical strength of matrix are improved. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) chemical heat pump comprising reactor part, evaporator/condenser part and passage connecting reactor part and evaporator/condenser part with each other allowing for exchange of gas between reactor part and evaporator/condenser part in which reactor part contains volatile liquid and active substance; and (2) manufacture of material which involves providing active substance and coating active substance with flakes of graphene and graphene oxide. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the cells that constitute the material.