| Abstract Scope |
Graphene ink, a promising ink formulation, is considered as a candidate for printing flexible solid-state supercapacitors. However, most of graphene materials are difficult to be applied as active ink used in printed MSCs because of their agglomerations due to the strong π–π interaction between the large basal planes.
Herein, a kind of hierarchical porous graphene microsphere was rationally designed and assembled into printable ink for gravure printed MSCs. More importantly, these hierarchical porous graphene microspheres with a near spherical contour, which has ability to to support the axle and absorb shock from any direction without unfolding and even resist compression during the printing process. Meanwhile, depending on the hierarchical porous features of graphene microsphere, the specific physical and material properties of the inks, including solid loading, particle dispersion, viscosity, rheology behavior, etc were systematically investigated for realizing efficient production of high-performance flexible MSCs. |