We propose a general strategy that can integrate the ultrafast construction of reduced graphene oxide (rGO)-based flexible composite films within 1–5 min by facile reduction and crosslinking. Using such approach, the obtained rGO-based films have extensively tunable architectures, compositions, and loadings simply by modulating components, ratio,concentration, and amount of the blended slurry. Meanwhile, these porous conductive films have excellent structural stability and volume buffering effect.

This article critically and systematically reviews the research progress, synthesis strategy, storage mechanism and applications of iron-chalcogenide-based composites in LIBs, SIBs, KIBs, Li–S batteries and SCs. Meanwhile, the challenges and prospects of iron-chalcogenide-based electrode materials are also presented, which can provide beneficial guidance for the practical application of iron-chalcogenide-based composites.

A general synthetic strategy of electrospinning process was developed to achieve the yolk-shelled FexQy@C (Q=S, Se and P) film for binder-free anode of high-performance SIBs. Such method has more precursor materials to choose from and is highly scalable. More importantly, the designed electrodes have a unique yolk-shell structure and a three-dimensional conductive network.

Co-doped flexible lotus-leaf-like carbon and FeS nanosheets (FeS@N,S-CNSs). This structure takes full advantage of the high conductivity and mechanical flexibility of carbon nanosheets, and the high the oretical capacity of FeS. Together with the co-doping effects, the nanoscale size of FeS, and the robust connection between the in-situ generated FeS nanocrystals and carbon nanosheets, the FeS@N,S-CNSs outputs excellent electrochemical performance in both of SIBs and LIBs.

In this paper, NiO/reduced graphene oxide (NiO/RGO) composites were synthesized, and the strong bonding between NiO and RGO stemmed from alkaline hydrothermal treatment and calcination in air. NiO nanoparticles were coated on RGO to avoid volume expansion during electrochemical processes.

With the aim of providing a deeper understanding of the underlying degradation mechanisms associated with the lifetime of blue emitters during the decay process of blue PhOLEDs, quantum chemistry studies were performed to examine the chemical degradation mechanism of common sky blue emitter iridium(III)bis(4,6-di-fluorophenyl)-pyridinato-N,C2 0 )picolinate (FIrpic) and its derivatives with density functional theory (DFT) calculations.

Herein, N-doped carbon nanotubes (CNTs) encapsulating NiCo-Se nanoparticles (NPs) are assembled to spheres (NCNTs/NiCo-Se), which are successfully synthesized by using Ni-Co prussian blue analogues (PBAs) as templates and precursors. It is rare to derive CNTs from PBAs by means of C3H6 among the reported work and the structure evolution of NCNTs spheres derived from PBAs is exhibited. The high flow rate of N2 and C3H6 tend to cause short CNTs and large diameter of CNTs, respectively, owing to the dual-effect of diffusion and deposition of C atoms. Due to the advantage superposition of CNTs with high length-diameter ratio and NiCo-Se NPs, NCNTs NiCo-Se gets excellent capabilities of charge transfer, diffusion efficiency, and electrochemical reactions.

Here, Ni-Co prussian blue analogue (PBA) is used as precursor and template to synthesize 3D hollow submicroboxes coated with 2D MoS2 nanosheets (MoS2 @Ni/Co-S) by one-pot solvothermal process. The study shows that the cubic voids in Ni-Co PBA submicrocubes become larger with the prolonging of solvothermal time owing to the etching reactions for Ni-Co PBA submicrocubes.

The MnO2/Mn3O4@Ni-Co/graphite carbon (GC) nanocubes with porous structure and ultrathin nanosheets was constructed by self-template strategy and in-situ synthesis.The composites not only synergize the magnetic loss of magnetic Ni-Co nanoparticles with the dielectric losses of GC and MnO2/Mn3O4, but also enhance the multiple interface polarization and improve impedance matching.

Herein, the method of free arc thermal excitation is developed to disperse CNTs agglomerations to fluffy CNTs aerogels on Ni foam@NiCo2O4 nanoneedles (NF@NiCo2O4/CNTs). NF@NiCo2O4/CNTs is evaluated as an electrode for supercapacitor and shows remarkable electrochemical properties, which is resulted from the synergistic effect of high conductive CNTs aerogels and sufficient active sites of NiCo2O4 nanoneedles. The mass specific capacity and rate capability of NF@NiCo2O4/CNTs are 20% and 14% higher than that of NF@NiCo2O4 due to the high conductivity of CNTs aerogels.