A facile and general method for the large-scale preparation of various three-dimensional (3D) graphene oxide/metal−organic framework (GO/MOF) composites is developed through a simple mixing process using MOFs and graphene oxide. This preparation method is able to rapidly produce GO/MOF composite hydrogels with controllable composition in only several minutes, which is also suitable to a series of different MOFs. The obtained GO/MOF composites are severed as the precursors for the subsequent preparation of MOF-derived composite aerogels, e.g., rGO/Fe 2 O 3 and rGO/ NiO/Ni composite aerogels, through freeze-dry and calcination processes. When used as a supercapacitor electrode, the rGO/Fe 2 O 3 composite shows a good rate capability with high specific capacitances of 869.2 and 289.6 F•g −1 at the current densities of 1 and 20 A•g −1 , respectively, as well as a long cycle life without obvious decrease of capacitance after 5000 cycles. Moreover, the flexible all-solid-state supercapacitor device is also fabricated based on the obtained rGO/Fe 2 O 3 composite aerogel, which exhibits a high volumetric capacitance of 250 mF•cm −3 at 6.4 mA•cm −3 and a capacity retention of 96.3% after 5000 cycles at 50.4 mA•cm −3 , as well as an excellent mechanical flexibility.

A highly twisted electron acceptor 10-phenyl-10H-phenothiazine 5,5-dioxide was designed for construction of AIDF material PXZ2PTO. The non-doped devices realized EQEmax of 16.4%, exhibiting similar efficiency to doped devices.

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