Biocompatible Mesoporous Hollow Carbon Nanocapsules for High Performance Supercapacitors.

ABSTRACT: A facile and general method for the controllable synthesis of N-doped hollow mesoporous carbon nanocapsules (NHCNCs) with four different geometries has been developed. The spheres (NHCNC-1), low-concaves (NHCNC-2), semi-concaves (NHCNC-3) and wrinkles (NHCNC-4) shaped samples were prepared and systematically investigated to understand the structural effects of hollow particles on their supercapacitor performances. Compared with the other three different shaped samples (NHCNC-1, NHCNC-2, and NHCNC-4), the as-synthesized semi-concave structured NHCNC-3 demonstrated excellent performance with high gravimetric capacitance of 326 F g^-1 (419 F cm^-3) and ultra-stable cycling stability (96.6% after 5000 cycles). The outstanding performances achieved are attributed to the uniq

SUBMITTER: Wang L 

PROVIDER: S-EPMC7062802 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature