Facile assembly of α-Fe2O3 nanorings@reduced graphene oxide composites with high lithium storage performance

Enhanced performance of alpha‐Fe 2 O 3 nanoparticles with optimized graphene coated layer as anodes for lithium‐ion batteries

“…As can be seen from the curves in Figure S3, the total weight loss of 10%, 25%, 40%, and 50% Fe2O3@graphene samples are 6.98%, 17.31%, 29.95%, and 33.2%, respectively, which grows up with the increased amount of PDDA. The gradual weight loss between 300°C and 700°C may arises from the combustion of carbon in the air . Clearly, the mass of the coated graphene is lower than that of the added PDDA, which can be ascribed to the wasted PDDA that weakly adsorbed on the surface of Fe 2 O 3 during the centrifugal process.…”

“…The gradual weight loss between 300°C and 700°C may arises from the combustion of carbon in the air. [29][30][31] Clearly, the mass of the coated graphene is lower than that of the added PDDA, which can be ascribed to the wasted PDDA that weakly adsorbed on the surface of Fe 2 O 3 during the centrifugal process.…”

Graphene‐Oxide‐Encapsulated Fe2O3 Nanoparticles with Different Dimensions as Lithium‐Ion Battery Anodes: The Morphology Effect of Fe2O3

“…High‐resolution XPS spectrum of O 1s for Fe/GO‐r as an example could be split into four peaks, which belongs to the oxygen in Fe 2 O 3 particles, GO and between the two (Figure S6b). The bond energy of 529.8 eV reflects the Fe 2 O 3 particles structure with Fe‐O single bond, and the bond energy at 530.2 eV represents the C=O structure in Fe/GO‐r composite [49] . Furthermore, the C−O−Fe bond at 531.4 eV validates that Fe 2 O 3 is well embedded in GO sheets.…”

“…The bond energy of 529.8 eV reflects the Fe 2 O 3 particles structure with Fe-O single bond, and the bond energy at 530.2 eV represents the C=O structure in Fe/GO-r composite. [49] Furthermore, the CÀ OÀ Fe bond at 531.4 eV validates that Fe 2 O 3 is well embedded in GO sheets. CÀ OÀ C/ CÀ OH bond of 533.1 eV corresponds to a unique overlapping sheets structure.…”

Composites of Reduced Graphene Oxide and Fe2O3 Nanoparticles Anchored on MoS2 Nanosheets for Lithium Storage

“…Therefore, the researchers are trying to find anode materials that can replace graphite and provide higher capacity and safety. In recent years, Fe 2 O 3 has attracted the attention of many enterprises and researchers because of abundant reserves in nature, green, nonpollution, high safety, good reliability, and high theoretical specific capacity. − However, iron-based materials have still many defects that have not been overcome, − such as structural damage caused by volumetric change during cycling and inferior electronic conductivity of active materials themselves, which make the electrochemical performance of battery poor, thus limiting the further development and application.…”