In Situ N, O-Dually Doped Nanoporous Biochar Derived from Waste Eutrophic Spirulina for High-Performance Supercapacitors.

ABSTRACT: Sustainable and high-performance energy storage materials are crucial to address global energy and environmental challenges. In this study, Spirulina platensis was used as the carbon and nitrogen source, and Spirulina-based nanoporous biochar (SNPB) was synthesized through chemical activation using KOH as the activating agent in N₂ atmosphere. SNPB-800-4 was characterized by N₂ adsorption-desorption and XPS, showing a high specific surface area (2923.7 m² g^-1) and abundant heteroatomic oxygen (13.78%) and nitrogen (2.55%). SNPB-800-4 demonstrated an exceptional capacitance of 348 F g^-1 at a current density of 1 A g^-1 and a remarkable capacitance retention of 94.14% after 10,000 cycles at a current density of 10

SUBMITTER: Geng Y 

PROVIDER: S-EPMC10489722 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature