Elucidating surface redox charge storage of phosphorus-incorporated graphenes with hierarchical architectures

摘要: Abstract The incorporation of heteroatoms into carbon nanomaterials is extremely crucial for tuning their electronic and surface properties, but phosphorus (P) hierarchical structure remains challenging its charge storage mechanism obscure. Herein, we investigate redox hierarchically structured, P-incorporated graphene architectures (hpGAs). As probed by in-situ ex-situ spectroscopic techniques density functional theory, the P=O site C–P=O bonding with most favorable proton binding energy identified associated highly reversible fast pseudocapacitive behavior. a consequence synergistic effects arising from compositional structural features, hpGAs show dramatic improvements in capacitance, rate capability, cyclic stability. This work broadens our knowledge about unique phenomenon originating controlled heteroatom chemistry using combined computational methods.