Iron carbide encapsulated by porous carbon nitride as bifunctional electrocatalysts for oxygen reduction and evolution reactions

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.…”

Composite Electrocatalyst Derived from Hybrid Nitrogen‐Containing Metal Organic Frameworks and g‐C3N4 Encapsulated In Situ into Porous Carbon Aerogels

“…The Fe2p spectra of Fe‐bpdc‐C 3 N 4 ‐CA‐800 can be deconvoluted into two pairs of peaks for Fe 3+ (712.9 and 726.2 eV) and Fe 2+ (709.6 and 723.1 eV) with a satellite peak at 719.8 eV and a small peak due to metallic Fe at 707 eV. The peak at 709.6 eV in the Fe 2p 3/2 spectra indicates the existence of Fe−Nx bonding ,…”

Recent Advances in Nanostructured Transition Metal Carbide- and Nitride-Based Cathode Electrocatalysts for Li–O2 Batteries (LOBs): A Brief Review

“…Due to the combined effect between the CNFs and Fe 3 C/Fe, the catalytic activity was drastically enhanced, which in turn favored the enhancement of the capacity, cycling stability, and rate capability [ 85 ]. Wei et al [ 86 ] also observed the synergistic effect of robust interactions between Fe 3 C and carbonitride, which illustrated the superior ORR activity and the moderate OER activity in a KOH solution compared to that for commercially available Pt-C electrodes. These observations undoubtedly pave the way for their potential use as a cathode in future-generation LOBs.…”