In-situ activation endows the integrated Fe3C/Fe@nitrogen-doped carbon hybrids with enhanced pseudocapacitance for electrochemical energy storage

Large-scale synthesis of ultrafine Fe3C nanoparticles embedded in mesoporous carbon nanosheets for high-rate lithium storage

“…Transition metal carbides (TMCs) offer good electrical and thermal conductivity, excellent hardness and mechanical stability, which makes them promising candidates in the fields of dye-sensitized solar cells, Fischer–Tropsch synthesis, proton exchange membrane fuel cells and lithium ion batteries (LIBs). 1–5 Among these, Fe 3 C displays high additional capacity and excellent electrochemical performance in LIBs owing to the reversible gel-like film and interfacial lithium storage on the surface. 6–8 However, bulk Fe 3 C suffers from high resistance and volume expansion during the intercalation/deintercalation of Li ions, leading to capacity loss and poor cycling life.…”

Hierarchical MoP Hollow Nanospheres Anchored on a N,P,S‐Doped Porous Carbon Matrix as Efficient Electrocatalysts for the Hydrogen Evolution Reaction

“…It is worth noting that the hollow interiors and gaps between MoP subunits on the shells can endow MoP nanospheres with substantial pores. Meanwhile, large amounts of in situ released gases species (e.g., C 2 N 2 + , C 3 N 2 + , C 3 N 3 + ) from the decomposition of g‐C 3 N 4 also blows the carbon matrix to generate well‐developed porous structures . N 2 absorption/desorption isotherms were conducted to gain further insight into the pore structures (Figure e, f).…”

“…It is worth noting that the hollow interiors and gaps between MoP subunits on the shells can endow MoP nano-spheresw ith substantial pores.M eanwhile, large amounts of in situ released gases species (e.g.,C 2 N 2 + ,C 3 N 2 + ,C 3 N 3 + )f rom the decomposition of g-C 3 N 4 also blowst he carbonm atrix to generate well-developed porous structures. [45,57] N 2 absorption/desorptioni sotherms were conducted to gain further insight into the pore structures (Figure 4e,f). As expected, the Brunauer-Emmett-Teller (BET) surfacea rea of the pure carbon materials is as high as 551 m 2 g À1 .W ith the addition of hs-MoP,t he hs-MoP/NPSC-0.3 stillc an deliver ah ighs urface area of 261 m 2 g À1 ,t hanks to abundant mesopores around 2-20 nm as well as as ubstantial quantity of micropores.…”

Gelatin‐Derived 1D Carbon Nanofiber Architecture with Simultaneous Decoration of Single Fe−Nx Sites and Fe/Fe3C Nanoparticles for Efficient Oxygen Reduction

“…[27] Raman spectra show the variation in the peak intensity of the D band (1330 cm À 1 , attributable to the A 1g vibration mode for disordered carbon atoms) and G band (1590 cm À 1 , attributable to the E 2g vibration mode for ordered graphitic carbon atoms). [28] The ratio of D-band and G-band intensities (I D /I G ) for Fe 3 C/ Fe,NÀ CNFs (1.41) is higher than that of Fe 3 C/Fe,NÀ C (1.21), indicating a higher extent of carbon defects for Fe 3 C/Fe,NÀ CNFs sample (Figure S7).…”