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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 H 2 adsorption capacity, CO 2 /H 2 selectivity, thermal and electrical conductivity of pure Cu-BTC. The electrical conductivity, effective thermal conductivity (ETC), CO 2 and H 2 adsorption capacity of CFP@Cu-BTC composites synthesized for 3, 9, 18, and 24 h are investigated, respectively. Results show the H 2 adsorption capacity of CFP@Cu-BTC (9 h) is similar to that of pure Cu-BTC. The value of the selectivity of equimolar CO 2 /H 2 (18 h) is 58–209 at 0–100 kPa and 273.15 K. The ETC of CFP@Cu-BTC is 17–25 times higher than that of pure Cu-BTC. The electrical conductivity is 1.3 × 1011–1.6 × 1011 times higher compared to that of pure Cu-BTC. The CFP@Cu-BTC composite can be used as a promising material for H 2 storage and electrodes of ultra-capacitor. • Cu-BTC/CFP is obtained by the seeds induced hydrothermal method. • The selectivity of equimolar CO 2 /H 2 (18 h) can reach up to 58–209. • The thermal conductivity of Cu-BTC/CFP is much higher than that of pure Cu-BTC. • The electric conductivity of Cu-BTC/CFP is 1.3 × 105 S/m when loading 40 wt% Cu-BTC. [ABSTRACT FROM AUTHOR]