One-step preparation of N,O co-doped 3D hierarchically porous carbon derived from soybean dregs for high-performance supercapacitors.

ABSTRACT: Hierarchically porous carbon (HPC) material based on environmental friendliness biomass has spurred much attention, due to its high surface area and porous structure. Herein, three-dimensional (3D) N,O co-doped HPC (N-O-HPC) was prepared by using a one-step fabrication process of simultaneously carbonizing and activating soybean dregs and used as an electrode for supercapacitors (SCs). The obtained N-O-HPC with 4.8 at% N and 6.1 at% O exhibits a pretty small charge transfer resistance (0.05 Ω) and a large specific capacitance (408 F g^-1 at 1 A g^-1), due to its 3D hierarchically porous framework structure with extremely large specific surface area (1688 m² g^-1). Moreover, a symmetrical SC assembled with the HPC electrode exhibits an amazingly high

SUBMITTER: Zhu G 

PROVIDER: S-EPMC9064598 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature