A channel-confined strategy for synthesizing CoN-CoOx/C as efficient oxygen reduction electrocatalyst for advanced zinc-air batteries

A General Self‐Assembly Induced Strategy for Synthesizing 2D Ultrathin Cobalt‐Based Compounds Toward Optimizing Hydrogen Evolution Catalysis

“…After topochemical transformation, the energy gap between Co d and anion p band centers decreases, which reduces the degree of electron localization and improves the conductivity of cobalt‐based compounds. [ 29 ] This is especially true for CoP and CoSe 2 , as P and Se atoms with relatively lower electronegativity are less electron‐pulling, making it more conducive for electron transfer/transport. It is noteworthy that, although CoSe 2 shows high degree of electron delocalization, the increased sheet thickness and crystal aggregation are not beneficial for active site exposure and electron transfer/transport, leading to inferior HER catalyzing performance.…”

2D Metal–organic framework derived Co/CoSe2 heterojunctions with interfacial electron redistribution as bifunctional electrocatalysts for urea-assisted rechargeable Zn–air batteries

“…S5† shows that the diameters of Co/CoSe 2 nanoparticles are ranging from 5 to 40 nm, depending on the particle size statistics, and there are no obvious nanoparticle agglomerations because of the inhibiting effect of the carbon coating. 43,44 Interestingly, some morphological distortions consisting of the noncontinuous graphitic carbon framework are found throughout the TEM image of Co/CoSe 2 @CNx (yellow circle in Fig. 2b).…”

Growing Co–Ni–Se nanosheets on 3D carbon frameworks as advanced dual functional electrodes for supercapacitors and sodium ion batteries

“…5f ) are attributed to pyrrolic nitrogen, pyridinic nitrogen and graphitic nitrogen, which proves that the carbon matrix is doped with nitrogen heteroatoms. 35 N doping in Ni-Co-Se/BWCF-160 can increase the ability to provide electrons, which is beneficial for the rapid pervasion of Na + .…”