Enhanced thermal and electrical conductivity of Cu-BTC metal organic framework with high CO2/H2 selectivity by composing with carbon fiber paper

Abstract

Abstract Cu-benzene–1, 3, 5-tricarboxylate (Cu-BTC) coating on carbon fiber paper (CFP@Cu-BTC) is synthesized by using the seed-induced hydrothermal method to improve H2 adsorption capacity, CO2/H2 selectivity, thermal and electrical conductivity of pure Cu-BTC. The electrical conductivity, effective thermal conductivity (ETC), CO2 and H2 adsorption capacity of CFP@Cu-BTC composites synthesized for 3, 9, 18, and 24\xa0h are investigated, respectively. Results show the H2 adsorption capacity of CFP@Cu-BTC (9\xa0h) is similar to that of pure Cu-BTC. The value of the selectivity of equimolar CO2/H2 (18\xa0h) is 58–209\xa0at 0–100\xa0kPa and 273.15\xa0K. The ETC of CFP@Cu-BTC is 17–25 times higher than that of pure Cu-BTC. The electrical conductivity is 1.3\xa0×\xa01011–1.6\xa0×\xa01011 times higher compared to that of pure Cu-BTC. The CFP@Cu-BTC composite can be used as a promising material for H2 storage and electrodes of ultra-capacitor.