Silicon monoxide (SiO) is attaining extensive interest amongst silicon‐based materials due to its high capacity and long cycle life; however, its low intrinsic electrical conductivity and poor coulombic efficiency strictly limit its commercial applications. Here low‐cost coal‐derived humic acid is used as a feedstock to synthesize in situ graphene‐coated disproportionated SiO (D‐SiO@G) anode with a facile method. HR‐TEM and XRD confirm the well‐coated graphene layers on a SiO surface. Scanning transmission X‐ray microscopy and X‐ray absorption near‐edge structure spectra analysis indicate that the graphene coating effectively hinders the side‐reactions between the electrolyte and SiO particles. As a result, the D‐SiO@G anode presents an initial discharge capacity of 1937.6 mAh g−1 at 0.1 A g−1 and an initial coulombic efficiency of 78.2%. High reversible capacity (1023 mAh g−1 at 2.0 A g−1), excellent cycling performance (72.4% capacity retention after 500 cycles at 2.0 A g−1), and rate capability (774 mAh g−1 at 5 A g−1) results are substantial. Full coin cells assembled with LiFePO4 electrodes and D‐SiO@G electrodes display impressive rate performance. These results indicate promising potential for practical use in high‐performance lithium‐ion batteries.

A novel coal-derived graphene-intercalated MoS 2 heterostructure was prepared with a facile in situ hydrothermal approach followed by high-temperature calcination. XRD, FE-SEM, HR-TEM, HR-Raman, and TOC analytical instruments, combined with first-principles simulations, were employed to explore the structural and electrochemical properties of this heterostructure for use as an electrode material. The XRD measurements and simulations confirmed the formation of the MoS 2 /graphene (MoS 2 -G) heterostructure. The microstructure analysis indicated that a well-defined 3D flower-like structure with tunable interlayer distances was created in the MoS 2 layer. The novel MoS 2 -09% G anode exhibits a remarkable initial discharge capacity of ∼929 mAh/g due to its interlayer expansion from the intercalation of graphene between the MoS 2 layers. This anode maintains a capacity of ∼813 mAh/g with a Coulombic efficiency (CE) of ∼99% after 150 cycles at a constant current density of 100 mA/g. This anode also delivers a high-rate capability of ∼579 mAh/g at a current density of 2000 mA/g, significantly higher than that of other comparable structures. The unique flower-like arrangement, sufficient interlayer spacing for Li-ion diffusion, and the increased conductive matrix created using coal-derived graphene enhance the electrode kinetics during electrochemical reactions. Our firstprinciples calculations revealed that the diffusion barriers are significantly lower in heterostructures compared to that of bare MoS 2 . This heterostructure design has significant potential as a new type of anode for Li-ion storage in next-generation batteries.

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