Work

Synthesis of tunable nitrogen-doped graphite nanostructures by electrochemical CO2 conversion for directly as anode materials

Year: 2025

Type: article

Abstract: In this paper, nitrogen-doped nano-graphite with granular, flake and linear structures was in-situ prepared by one-step molten salt electrolysis process through electrochemical conversion of CO₂ in LiCl-KCl-KOH at 650°C with C₃H₆N₆ as N source. The mechanism and reaction process of nitrogen doped into nano-graphite during the formation process of nano-graphite was systemically investigated. In addition, nitrogen doping plays an important role in enhancing the graphitization process, leading to the superior electrochemical property of the prepared carbon material, as demonstrated by the electrochemical property in lithium-ion batteries (LIBs). Such as, the reversible capacity of the N-doped nano-graphite material is 628 mAh/g at a current density of 100 mA/g, with high capacity retention of 96% after 500 cycles at 500 mA/g. This study highlights the potential of molten salt electrolysis as an effective method for CO₂ conversion into high-performance carbon materials, providing promising applications in electrochemical energy storage technologies.

Source: Carbon

DOI: 10.1016/j.carbon.2025.120321