Ultrathin NiO/NiFe2O4 Nanoplates Decorated Graphene Nanosheets with Enhanced Lithium Storage Properties

Du, Dejian; Yue, Wenbo; Fan, Xialu; Tang, Kun; Yang, Xiaojing

doi:10.1016/j.electacta.2016.02.085

Cited by 36 publications

(14 citation statements)

References 40 publications

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“…Different structures make difference. Wang et al reported 1D NiFe 2 O 4 with tunable morphology, Jin et al reported hollow spheres structure of NiFe 2 O 4 /C, and Du et al covered ultrathin nanoplates of NiO/NiFe 2 O 4 , Liu et al also studied NiFe 2 O 4 nanooctahedrons with carbon coated . Zhou et al researched the multi‐shelled hollow spheres of α‐Fe 2 O 3 and Zhang et al studied the yolk‐shell structure of void size iron oxide@carbon .…”

Section: Introductionmentioning

confidence: 99%

Self‐Assembled Porous NiFe₂O₄ Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries

et al. 2017

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A fairly simple and environmentally friendly hydrothermal method is reported to synthesize anode materials composed of NiFe2O4 (NFO) and ultrathin flake graphite (UFG), which are denoted as NFO/UFG composites. Several experiments were then carried out in order to determine the most beneficial proportion of UFG in the composite. Finally, it was found that the NFO/UFG‐2 composite exhibits the most beneficial morphological structure which is characterized as three‐dimensional floral NFO microspheres assembled by many porous nanosheets anchored on the pedestal of UFG (as determined from SEM and TEM measurements). In addition, the NFO/UFG‐2 composite also demonstrates the best electrochemical performances. It shows a stable long‐term cycling performance with a high initial Coulombic efficiency of 83.4 % and even obtains a high specific capacity of 963.4 mAh g−1 after 300 cycles at a current density of 200 mA g−1 and remarkable reversibility not only at low current densities but also at high current densities. Satisfyingly, the good synergy between porous NFO and UFG significantly enhances the electronic conductivity and relieves the huge bulk expansion of traditional transition metal oxide. This unique electrode material is demonstrated to be a promising candidate for the new‐generation lithium ion batteries.

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Section: Introductionmentioning

confidence: 99%

Self‐Assembled Porous NiFe₂O₄ Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries

et al. 2017

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“…1. The peaks are located in the 2θ range of 20°-80° and all samples exhibited a cubic structure with an Fd-3 m space group [37]. The lattice parameters a for the samples were found to increase with increasing annealing temperature.…”

Section: Synthesis and Characterization Of The Nanoferritesmentioning

confidence: 88%

Characteristics of co-precipitation synthesized cobalt nanoferrites and their potential in industrial wastewater treatment

2020

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Cobalt-nanoferrite as a magnetic separable material has drawn the attention of researchers due to its unique properties, significant applications and high potentiality in wastewater treatment. In this study, the cobalt nanoferrite was synthesized by chemical co-precipitation method at different annealing temperatures and characterized by X-ray diffraction, scanning electronic microscopy, energy dispersive X-ray, Fourier transform infrared spectroscopy and UV-visible spectroscopy. Then the synthesized nanoferrite was assessed and used for the treatment of tannery wastewater. The characterizations confirmed the formation of nanoferrites with size between 15 and 23 nm. The average particle size increased with increase of annealing temperatures. Typical values for tannery wastewater treatment efficiency for chromium, total dissolved solids, biochemical oxygen demand and chemical oxygen demand were 23.75, 90.83, 52.72 and 48.07% respectively. Thus, the treatment by nanoferrites appears a promising and effective method for the removal of contaminants.

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“…One step in situ hydrothermal synthesis could be useful to achieve ternary composites like Ni 2+ A 3+ LDH‐CNT‐graphene composite also, which synergically combined the conductive matrix with electroactive moities and resulted in very high capacitance performance (1869 F g –1 at a current density of 1.0 mA cm –2 ) . In situ solvothermal synthesis of Ni 2+ Fe 3+ ‐LDH ‐graphene composite followed by ex situ thermal decomposition of LDH to form NiO/NiFe 2 O 4 ‐graphene composite were also reported . Another set of inorganic nanostructures‐graphene composites obtained from hydrothermal synthesis include Mn 2+ , carbon nanocages, Pt 3 Ni‐carbon, N doped carbon‐rGO composites .…”

Section: Graphene‐based Materials From Subcritical Hydro‐/solvothermamentioning

confidence: 99%

Advances in Subcritical Hydro‐/Solvothermal Processing of Graphene Materials

2017

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Many promising graphene-based materials are kept away from mainstream applications due to problems of scalability and environmental concerns in their processing. Hydro-/solvothermal techniques overwhelmingly satisfy both the aforementioned criteria, and have matured as alternatives to wet-chemical methods with advances made over the past few decades. The insolubility of graphene in many solvents poses considerable difficulties in their processing. In this context hydro-/solvothermal techniques present an ideal opportunity for processing of graphenic materials with their versatility in manipulating the physical and thermodynamic properties of the solvent. The flexibility in hydro-/solvothermal techniques for manipulation of solvent composition, temperature and pressure provides numerous handles to manipulate graphene-based materials during synthesis. This review provides a comprehensive look at the subcritical hydro-/solvothermal synthesis of graphene-based functional materials and their applications. Several key synthetic strategies governing the morphology and properties of the products such as temperature, pressure, and solvent effects are elaborated. Advances in the synthesis, doping, and functionalization of graphene in hydro-/solvothermal media are highlighted together with our perspectives in the field.

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Ultrathin NiO/NiFe2O4 Nanoplates Decorated Graphene Nanosheets with Enhanced Lithium Storage Properties

Cited by 36 publications

References 40 publications

Self‐Assembled Porous NiFe₂O₄ Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries

Self‐Assembled Porous NiFe₂O₄ Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries

Characteristics of co-precipitation synthesized cobalt nanoferrites and their potential in industrial wastewater treatment

Advances in Subcritical Hydro‐/Solvothermal Processing of Graphene Materials

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Ultrathin NiO/NiFe2O4 Nanoplates Decorated Graphene Nanosheets with Enhanced Lithium Storage Properties

Cited by 36 publications

References 40 publications

Self‐Assembled Porous NiFe2O4 Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries

Self‐Assembled Porous NiFe2O4 Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries

Characteristics of co-precipitation synthesized cobalt nanoferrites and their potential in industrial wastewater treatment

Advances in Subcritical Hydro‐/Solvothermal Processing of Graphene Materials

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Self‐Assembled Porous NiFe₂O₄ Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries

Self‐Assembled Porous NiFe₂O₄ Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries