Densely packed graphene nanomesh-carbon nanotube hybrid film for ultra-high volumetric performance supercapacitors

From flour to honeycomb-like carbon foam: Carbon makes room for high energy density supercapacitors

“…Carbon materials have played a very important role in the design of high energy density supercapacitors due to their large surface area, high electrical conductivity and excellent thermal stability [8][9][10][11][12][13][14][15]. It is well-known that the specific surface area and pore size distribution are the main factor affecting the electrochemical performances of carbon materials, especially for rate performance at high current [10,11].…”

Engineering Graphenes from the Nano- to the Macroscale for Electrochemical Energy Storage

“…A flexible graphene/multi-wall carbon nanotube film has been fabricated by vacuum filtration starting from a mixture of GO and multi-wall CNTs (GN/MWCNT). Electrochemical results demonstrated that the reduced film possessed a high specific capacitance and a high capacity retention [65,66], since the multi-wall CNT spacers increased the ion-diffusion rate and the utilization of internal surface.…”

Shell-like hierarchical porous carbons for high-rate performance supercapacitors

“…Great efforts have been made to tune carbonaceous materials into various shapes with versatile functions to obtain the enhanced electrochemical performance, such as carbon nanocages [20], flower-like porous carbons [21], honeycomb-like porous carbons [22], nanohybrids [23], wrinkled graphene [24], nanotubegraphene networks [25], graphene-like nanosheets [26], graphene nanomesh [27], graphene planes [28]. Nevertheless, the methods available are time-or energy-consuming, leading to the high-cost.…”