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Manganese sulfide (MnS) is a metal chalcogenide with a high theoretical capacity (616 mAh g−1) and can be used as an alternative anode material for lithium‐ion batteries. Generally, metal chalcogenides have intrinsic limitations, such as low stability resulting from volume expansion and poor electronic conductivity. Herein, the authors propose a synthesis strategy of nano‐sized γ‐MnS, and one‐step composite process by the growth of nanoparticles on the surface of reduced graphene oxide (rGO). These strategies can effectively prevent particle aggregation and enhance an electrochemical stability. The electrochemical performance of the γ‐MnS@rGO composite was evaluated using cyclic voltammetry (CV) and galvanostatic charge and discharge measurements. The results showed that the γ‐MnS@rGO composite delivered a high specific capacity (624 mAh g−1 at 0.5 A g−1 after 100 cycles), good cycling stability, and excellent rate capability compared to bare γ‐MnS. [ABSTRACT FROM AUTHOR]

-MnS@rGO composite electrode synthesized through a one-pot process served as an anode material for lithium-ion batteries (LIBs). Cover Feature: Enhanced Electrochemical Properties of -MnS@rGO Composite as Anodes for Lithium-Ion Batteries (Batteries & Supercaps 11/2023) Keywords: anode materials; lithium-ion batteries; -MnS; reduced graphene oxide EN anode materials lithium-ion batteries -MnS reduced graphene oxide 1 1 1 11/10/23 20231101 NES 231101 B The Cover Feature b illustrates the formation of a robust chemical bonding (C-S-C) between reduced graphene oxide (rGO) and a -MnS lattice. [Extracted from the article]

In this paper, we synthesized Bi 2 Se 3 -NFs@rGO composite and analyzed electro chemical properties. Bi 2 Se 3 -NFs@rGO composite improved specific capacity, cycle stability and ion conductivity by rGO composite. [Display omitted] • The synthesis of Bi 2 Se 3 nanoflakes(NFs) by organic molecules as selenium precursor. • Synthesized homogenously nanoflakes by oleylamine as surfactant. • Bi2Se3-NFs@rGO composite exhibits high specific capacity compared to previous articles. • Analyzed the mechanism of Bi 2 Se 3 -NFs@rGO composite via Ex-situ TEM and Ex-situ XRD. Metal selenides have gained attention as alternative anode materials for lithium-ion batteries, with increasing demand for electro-vehicles and appliances. Bismuth selenide has significant potential as anode materials in lithium-ion batteries. Nevertheless, metal selenides have essential drawbacks, such as volume expansion and poor cycle performance. In this paper, bismuth selenide synthesized homogeneous morphology-like nanoflakes (NFs) using the wet chemical method. We combined these nanoflakes with reduced graphene oxide to improve their structural stability. The Bi 2 Se 3 -NFs@rGO composite showed enhanced specific capacity from 750 mAhg−1 to 1100 mAhg−1 at 100 mAg−1. Furthermore, at a current density of 500 mAg−1, it reached a specific capacity (819 mAhg−1) after 300 cycles and demonstrated a coulombic efficiency of 96 %. [ABSTRACT FROM AUTHOR]

[Display omitted] • Multi-layered SnO nanoparticles were synthesized in one step and their morphology are unique shown in the previous reports. • The Na+ storage mechanism of the SnO electrode was investigated by ex-situ X-ray diffraction (XRD). • Cyclic voltammogram from 0.5 to 10 mV/s was obtained to investigate the electrochemical reaction kinetics of SnO/rGO. • The SnO/rGO nanocomposite showed high discharge capacity and cycling stability (338.7 mAh/g at 500 mA/g after 500 cycles). Metal oxide-based anodes have gained attention with their high theoretical capacity for Sodium–Ion Batteries (SIBs). However, their practical application is restricted due to huge volume expansion and low electronic conductivity caused by continuous cycling. This paper uses tin oxide/reduced graphene oxide (SnO/rGO) composites to solve the problems of low discharge capacity and poor cycling stability. The SnO/rGO nanocomposite electrode exhibits improved specific capacity, superior stability, and excellent rate property (a discharge capacity of 391.9 mAh/g at 100 mA/g after 120 cycles with capacity retention of 96.2 % and 338.7 mAh/g at 500 mA/g after 500 cycles with capacity retention of 92.2 %). Also, ex-situ XRD measurements are conducted to analyze the Na+ storage process in SnO. This study aims to expand the prospects of SnO/rGO nanocomposite anode for application in SIBs. [ABSTRACT FROM AUTHOR]

[Display omitted] • Nanosphere ZnSe was evenly grown on the surface of reduced graphene oxide by one pot synthesis. • Electrochemical reaction kinetics analysis was performed based on the crystal structure of ZnSe. • Real-time monitoring of Nyquist plots and X-ray diffraction patterns was conducted to investigate the mechanisms of sodium-ion storage. • The appropriate combination of ZnSe and reduced graphene oxide resulted in outstanding cycle performance and cycle stability as anode materials for sodium-ion batteries (316.14 mAhg−1 at 0.5 Ag−1 after 1000 cycles). Zinc selenide (ZnSe), a metal chalcogenide, is an attractive anode material for sodium-ion batteries, exhibiting high theoretical capacity (371.4 mAhg−1) and numerous redox sites. However, volume expansion and low stability during the charge/discharge processes present challenges. This study aimed to solve these inherent problems and synthesize a high-performance anode material by growing nano sized ZnSe on surface of reduced graphene oxide (rGO). ZnSe has two crystal structures, namely zinc-blende and wurtzite, and undergoes a transformation from wurtzite to the zinc-blende phase during sodium ion storage. This study conducted X-ray diffraction analysis of the electrode after the galvanostatic charge/discharge test and performed cyclic voltammetry analysis to investigate the transformation process. In addition, real-time monitoring of Nyquist plot and phase transition was performed to investigate the mechanisms of sodium ion storage. The ZnSe-rGO, exhibiting conversion reactions, shows cycle performance of 316.14 mAhg−1 at a current density of 0.5 Ag−1 after 1000 cycles. The evaluation of anode materials and analysis of their storage mechanism can facilitate sodium-ion batteries research. [ABSTRACT FROM AUTHOR]