A large-scale, high-powered energy storage system is crucial for addressing the energy problem. The development of high-performance materials is a key issue in realizing the grid-scale applications of energystorage devices. In this work, we describe a simple and scalable method for fabricating hybrids (graphenepyrrole/ carbon nanotube-polyaniline (GPCP)) using graphene foam as the supporting template. Graphene-pyrrole (G-Py) aerogels are prepared via a green hydrothermal route from two-dimensional materials such as graphene sheets, while a carbon nanotube/polyaniline (CNT/PANI) composite dispersion is obtained via the in situ polymerization method. The functional nanohybrid materials of GPCP can be assembled by simply dipping the prepared G-py aerogels into the CNT/PANI dispersion. The morphology of the obtained GPCP is investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), which revealed that the CNT/PANI was uniformly deposited onto the surfaces of the graphene. The as-synthesized GPCP maintains its original three-dimensional hierarchical porous architecture, which favors the diffusion of the electrolyte ions into the inner region of the active materials. Such hybrid materials exhibit significant specific capacitance of up to 350 F g -1 , making them promising in large-scale energy-storage device applications.
AustraliaAbstract Large scale energy storage system with high power is crucial for addressing the energy problem. The development of high-performance materials is a key issue in realizing grid-scale applications of energy storage devices. In this work, we describe a simple and scalable method to fabricate hybrids (graphene-pyrrole/carbon nanotube-polyaniline (GPCP) using graphene foam as the supporting template. Graphene-pyrrole (G-Py) aerogels are prepared by a green hydrothermal route from 2D materials -graphene sheets, while CNT/PANI composite dispersion is obtained via in-situ polymerization method. The functional nanohybrid materials of GPCP can 2 be assembled together by simply dipping the prepared G-py aerogels into the CNT/PANI dispersion. The morphology of the obtained GPCP are investigated by scanning electron microscopy (SEM) and transmission electron microscope (TEM), which revealed that CNT/PANI were uniformly deposited onto the surfaces of graphene. The as-synthesized GPCP maintains the original three-dimensional (3D) hierarchical porous architecture, which favor the diffusion of the electrolyte ions into the inner region of active materials. Such hybrid materials exhibit significant specific capacitance of up to 350 F g -1 , making them promising in large-scale energy storage device applications.