Nano-confined synthesis of multi yolk-shell Co-NC@N-HCSs hybrid as sulfur host for high performance lithium-sulfur batteries

Three-Dimensional Reticulated Fe–Co Sulfide/Graphene/CNTs Composites as Functional Interlayer Capturing and Converting Polysulfide for High-Performance Lithium–Sulfur Batteries

“…Further analysis of the XRD patterns of FCS@GC in Figure b and comparison shows that the diffraction peaks largely coincide with the characteristic peaks of FeCoS 4 , indicating that FeCoS 4 has been successfully decorated on the material surface by introducing thiourea as a sulfur source . As shown in Figure c, the detection of faint diffraction peaks in the XRD patterns of FC@GC, corresponding to the absorption peaks of Fe and Co, respectively, evidence that the hydrothermal approach can effectively integrate Fe and Co atoms into carbon materials. , Figure d indicates that the I D / I G value of FCS@GC (1.14) is the highest among the three materials with the heights of the D peaks representing the degree of disordered lattice defects and the heights of the G peaks representing the degree of ordered graphitization. This suggests that the inclusion of FeCoS 4 can elevate the degree of lattice defects present on the material surface, thereby increasing the surface polarity and conductivity of carbon materials as well as providing more active sites for LiPSs uptake.…”

Functional Interlayer with Highly Dispersed Co1–XS Embedded in N-Doped Carbon Spheres as Trapping-Catalyst Nanoreactors for Advanced Lithium–Sulfur Batteries

“…49 Co-NC has extra obvious peaks at 44.2°, 51.5°, and 75.9°which are assigned to the (111), (200), and (220) planes of Co (PDF no. 15-0806), 50 respectively, suggesting the presence of cobalt. The Co 1−X S nanoparticles not only enhance the polarity of carbon spheres but also have sufficient active sites for LiPSs adsorption and conversion.…”

N,S-Doped hollow carbon nanosheet-encapsulated Co9S8 nanoparticles as a highly efficient bifunctional electrocatalyst for rechargeable zinc–air batteries

“…20 Metalorganic frameworks (MOFs) are a novel type of crystalline compound that are composed of coordination bonds between metal ions and organic ligands. 19,21 They provide a variety of choices for optimizing the structure of electrode materials due to their adjustable pore distribution and controllable morphology. 22 In particular, zeolitic imidazolate frameworks (ZIFs), a subclass of MOFs, are commonly used as templates or precursors for the preparation of energy-related porous carbon materials.…”