▎ 摘　　要

Aiming at the poor heat conduction performance of porous MIL-101 applied in adsorption cooling process, few layer graphene (FLG) was selected as a promising thermal conductive additive to enhance thermal conductivity of MIL-101. The factors which influencing thermal conductivity of MIL-101/FLG composites were investigated. Thermal conductive mechanism of FLG for MIL-101 was discussed. Adsorption/desorption characteristics of water on the MIL-101/FLG composites were determined. Results show a two-dimensional structure of FLG with no defects and high degree of order is beneficial to the improvement of thermal conductivity for MIL-101/FLG composites. At 30 degrees C and bulk density of 0.55 g/cm(3), thermal conductivity of MIL-101/20%FLG and MIL-101/25%FLG composite is 6.5 and 11.3 times higher than that of MIL-101. Thermal conductivity of MIL-101/FLG composites is related to the alignment direction of FLG and test direction of heat flow, and the interfacial thermal resistance between MIL-101 and FLG. Adding FLG in the MIL-101/FLG composites does not affect adsorption/desorption mechanism of water on the MIL-101. The addition of FLG can strengthen mass transfer and thermal diffusion process on the surface of MIL-101. Adsorption rate constant of water on the MIL-101/25%FLG composite is 2.05 times higher than that of MIL-101. The desorption temperatures and desorption activation energies of water on MIL-101/20%FLG and MIL-101/25%FLG composites are lower than those of MIL-101. It can provide basic research for the development of new adsorption water chiller working pair (MIL-101/FLG-water) with high efficiency.