A graphene-like N-doped hierarchical porous carbon array on a 3D metal substrate is obtained by a green and one-step vacuum de-metal assisted carbonization process for high performance potassium-ion batteries.
Because of the special lamellar structure, numerous pores, and large effective specific surface area, the two-dimensional porous carbon material is very beneficial for the storage and transmission of energy.
A hierarchical porous carbon–carbon nanotube hybrid, which can be used as a high performance carbon host for sulfur, is formed in one step using a dual-functional hard template.
Hierarchical porous carbon nanosheets with both high graphitization degree and large specific surface area were prepared and applied as anode for lithium storage, exhibiting a high reversible discharge capacity.