Facile Synthesis of Nitrogen-Doped Graphene Quantum Dots/MnCO₃/ZnMn₂O₄ on Ni Foam Composites for High-Performance Supercapacitor Electrodes.

ABSTRACT: This study reports the facile synthesis of rationally designed composite materials consisting of nitrogen-doped graphene quantum dots (N-GQDs) and MnCO₃/ZnMn₂O₄ (N/MC/ZM) on Ni foam using a simple hydrothermal method to produce high-performance supercapacitor applications. The N/MC/ZM composite was uniformly synthesized on a Ni foam surface with the hierarchical structure of microparticles and nanosheets, and the uniform deposition of N-GQDs on a MC/ZM surface was observed. The incorporation of N-GQDs with MC/ZM provides good conductivity, charge transfer, and electrolyte diffusion for a better electrochemical performance. The N/MC/ZM composite electrode delivered a high specific capacitance of 960.6 F·g^-1 at 1 A·g^-1, low internal resi

SUBMITTER: Liu D 

PROVIDER: S-EPMC10890349 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature