Mesoporous nitrogen-doped carbon@graphene nanosheets as ultra-stable anode for lithium-ion batteries – Melamine as surface modifier than nitrogen source

A Complementary Co−Ni Phosphide/Bimetallic Alloy‐Interspersed N‐Doped Graphene Electrocatalyst for Overall Alkaline Water Splitting

“…Carbon‐based materials have exhibited excellent performance towards energy storage [19] and water splitting reactions (OER/HER) due to their electronic conductivity, especially heteroatom‐doped carbon augments the catalytic activity by promoting the ion adsorption [20] . The hydroxyl ions typically bind with the positively charged carbon adjacent to the electron‐withdrawing nitrogen atom in the N‐doped graphene; this does not occur in undoped graphene due to its chemical inertness [21] .…”

Polydopamine-Derived Carbon: What a Critical Role for Lithium Storage?

“…The Raman spectra of CNs, MCNs, and BMCNs are shown in Supplementary Figure S6. It is known that the two characteristic peaks located at ∼1350 and ∼1590 cm −1 correspond to disordered sp 3 carbon (D band) and graphitic sp 2 carbon (G band), respectively (Gayathri et al, 2019;Hu et al, 2019). In addition, the intensity ratios of D and G bands (I D /I G ) for CNs, MCNs, and BMCNs are 1.03, 1.04, and 1.05, respectively, indicating a relatively superior graphitic degree.…”

Recent progress in metal–organic framework/graphene-derived materials for energy storage and conversion: design, preparation, and application

“…203 Therefore, Gayathri et al prepared mesoporous-rich nitrogen-doped carbon@graphene nanosheets derived from a ZIF-8 precursor using melamine as a pore expanding agent and surface modi-er, which exhibited high specic capacity and excellent long cycle life compared to the melamine-unmodied anode. 123 In contrast to the Li + intercalation storage mechanism of carbon materials, metal compounds based on reversible conversion reactions can provide higher capacity, energy density and power density. 17 However, metal compounds oen exhibit poor conductivity and large volume expansion during the charging and discharging process, which leads to sluggish electron transport and structure pulverization in the lithiation reaction, resulting in rapid deterioration of battery performance.…”

“… 203 Therefore, Gayathri et al prepared mesoporous-rich nitrogen-doped carbon@graphene nanosheets derived from a ZIF-8 precursor using melamine as a pore expanding agent and surface modifier, which exhibited high specific capacity and excellent long cycle life compared to the melamine-unmodified anode. 123 …”

“…5d ). 123 The mesopore formation was attributed to the gaseous byproduct evolution of melamine degradation at high temperature for the pore generation and expansion in the carbon architecture. And the mesoporous structure could be optimized by adjusting the content of melamine in the mixed precursor.…”