Controllable preparation of dual-phase VC-C through in-situ electroconversion for lithium storage

Fe3C-Functionalized 3D Nitrogen-Doped Porous Graphene Nanocomposites as Anode Materials for Lithium-Ion Batteries

“…However, the most common method for doping N in graphene is a top-down method which is hard to achieve a high-nitrogen-doping content for the high chemical stability of carbon sources. Therefore, a bottom-up method via dehydration and carbonization from organic precursors is considered to be an effective method to realize high-nitrogen-doping contents by adjusting the contents of nitrogen-enriched organic precursors …”

“…Transition metal carbides have attracted significant interest due to their exceptional mechanical stability, high conductivity, and impressive hardness, making them ideal as active materials. , Incorporating Fe 3 C into the carbon matrix has been shown to improve the electrochemical performance of carbon-based anode materials. , Fe 3 C is believed to play a catalytic role in facilitating the reversible conversion of certain components in the solid electrolyte interface (SEI) layer during the charge and discharge process, thereby providing additional capacity beyond its theoretical limit for battery use (26 mA h/g for each unit that stores 1/6 Li). , For example, Li et al prepared chitosan-derived graphite carbon (CDGC)@Fe 3 C by chelating chitosan with iron ions and precisely controlling the mass ratio of chitosan to iron. A stable cycle capacity of 195 mA h/g was achieved after 200 cycles at a high current density of 2 A/g .…”

“…Therefore, a bottom-up method via dehydration and carbonization from organic precursors is considered to be an effective method to realize high-nitrogen-doping contents by adjusting the contents of nitrogen-enriched organic precursors. 32 Transition metal carbides have attracted significant interest due to their exceptional mechanical stability, high conductivity, and impressive hardness, making them ideal as active materials. 32,33 Incorporating Fe 3 C into the carbon matrix has been shown to improve the electrochemical performance of carbon-based anode materials.…”