Facile synthesis of the N-doped graphene/nickel oxide with enhanced electrochemical performance for rechargeable lithium-ion batteries

Yang, Cheng; Qing, Yongquan; An, Kai; Zhang, Zefei; Wang, Linshan; Liu, Changsheng

doi:10.1016/j.matchemphys.2017.04.029

Cited by 26 publications

(5 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This effect the reduction in the grain boundary barrier as well as bulk resistances and gives rise to electron scattering losses condition. Due to this electron scattering, hopping between the charge carriers increases and consequently decreases the resistivity [28,29]. This result shows that morphology and grain size are major factors that affect the conductivity and can further be confirmed from a.c. measurements.…”

Section: DC Conductivitysupporting

confidence: 55%

Tuning the electrical and cycling performance of nickel manganese oxide hexagonal-shaped particles via preparation routes for lithium-ion batteries

Jain¹,

Panwar²,

Tyagi³

2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

In this study, simple and effective solid-state and sol-gel routes are attempted to synthesize Nickel Manganese Oxide, NiMn2O4 (NMO). Structural, morphological, electrical, and electrochemical properties are investigated with calcination temperatures. XRD results confirm the highly crystalline cubic spinel structure with zero impurities for all samples, except NMOS_700, which indicates the presence of a slight NiMnO3 phase. SEM and TEM micrographs confirm the formation of hexagonal shape particles of size less than <0.5μm. At low calcination temperatures, grouped and uneven-shaped particles are observed with increased particle size. Electrical measurements depict the strong dependence of conductivities (σac and σdc) on grain size, grain boundary, and operating temperature. All the samples exhibit conductivities between 10-8 - 10-4 S/cm with the varied calcination temperature. Electrochemical performances are explored via Electrochemical Impedance Spectroscopy (EIS), Cyclic Voltammetry (CV), and Galvanostatic Charge-Discharge (GCD) profiles. Sample NMOB_700 and NMOB_800 exhibit the initial discharging capacity of 1104 and 1188 mAh g-1 at 100 mA g-1 current density. All the samples exhibit above 98% columbic efficiency after two initial cycles and show the reversible nature of NiMn2O4 and excellent cyclability. The electrochemical results confirm that preparation methods and calcination temperature have a great impact on the grain properties of materials. Multiple oxidation states of Mn and Ni is also confirmed through the XPS study.

show abstract

Section: DC Conductivitysupporting

confidence: 55%

Tuning the electrical and cycling performance of nickel manganese oxide hexagonal-shaped particles via preparation routes for lithium-ion batteries

Jain¹,

Panwar²,

Tyagi³

2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…By date, various inorganic materials decorated N-doped graphene composites were synthesized through different methods. For instances, MnO/N-doped graphene sheets [25] , VO 2 /N-doped graphene [53] , Zn 2 GeO 4 /Ndoped graphene [61] , CuO/N-doped graphene [82] , SnO 2 /N-doped graphene [95,117] , NiO/N-doped graphene [118] , Fe 3 O 4 /N-doped graphene [119] , TiO 2 /N-doped graphene [120] , and Si/N-doped graphene [121] structures were prepared as the anode materials. The N-doped graphene has several advantages for the construction of hybrid materials.…”

Section: Secondary Batteriesmentioning

confidence: 99%

Nitrogen-doped graphene: Synthesis, characterizations and energy applications

Jin

2018

Journal of Energy Chemistry

275

147

View full text Add to dashboard Cite

“…Porous materials, like metal oxides, are versatile and attractive candidates for energy-related applications, for instance, photovoltaics, − electrolysis, − or batteries − due to their high surface to volume ratio and improved accessibility of active sites. The activity of porous materials in electrochemical reactions is highly dependent on their properties, i.e., film thickness, crystallinity, electrical conductivity, porosity, and chemical composition.…”

Section: Introductionmentioning

confidence: 99%

Assessing Optical and Electrical Properties of Highly Active IrO_x Catalysts for the Electrochemical Oxygen Evolution Reaction via Spectroscopic Ellipsometry

et al. 2020

View full text Add to dashboard Cite

Efficient water electrolysis requires highly active electrodes. The activity of corresponding catalytic coatings strongly depends on material properties such as film thickness, crystallinity, electrical conductivity, and chemical surface speciation. Measuring these properties with high accuracy in vacuum-free and nondestructive methods facilitates the elucidation of structure−activity relationships in realistic environments. Here, we report a novel approach to analyze the optical and electrical properties of highly active oxygen evolution reaction (OER) catalysts via spectroscopic ellipsometry (SE). Using a series of differently calcined, mesoporous, templated iridium oxide films as an example, we assess the film thickness, porosity, electrical resistivity, electron concentration, electron mobility, and interband and intraband transition energies by modeling of the optical spectra. Independently performed analyses using scanning electron microscopy, energy-dispersive X-ray spectroscopy, ellipsometric porosimetry, X-ray reflectometry, and absorption spectroscopy indicate a high accuracy of the deduced material properties. A comparison of the derived analytical data from SE, resonant photoemission spectroscopy, X-ray absorption spectroscopy, and X-ray photoelectron spectroscopy with activity measurements of the OER suggests that the intrinsic activity of iridium oxides scales with a shift of the Ir 5d t 2g sub-level and an increase of p−d interband transition energies caused by a transition of μ 1 -OH to μ 3 -O species.

show abstract

Facile synthesis of the N-doped graphene/nickel oxide with enhanced electrochemical performance for rechargeable lithium-ion batteries

Cited by 26 publications

References 51 publications

Tuning the electrical and cycling performance of nickel manganese oxide hexagonal-shaped particles via preparation routes for lithium-ion batteries

Tuning the electrical and cycling performance of nickel manganese oxide hexagonal-shaped particles via preparation routes for lithium-ion batteries

Nitrogen-doped graphene: Synthesis, characterizations and energy applications

Assessing Optical and Electrical Properties of Highly Active IrO_x Catalysts for the Electrochemical Oxygen Evolution Reaction via Spectroscopic Ellipsometry

Contact Info

Product

Resources

About

Facile synthesis of the N-doped graphene/nickel oxide with enhanced electrochemical performance for rechargeable lithium-ion batteries

Cited by 26 publications

References 51 publications

Tuning the electrical and cycling performance of nickel manganese oxide hexagonal-shaped particles via preparation routes for lithium-ion batteries

Tuning the electrical and cycling performance of nickel manganese oxide hexagonal-shaped particles via preparation routes for lithium-ion batteries

Nitrogen-doped graphene: Synthesis, characterizations and energy applications

Assessing Optical and Electrical Properties of Highly Active IrOx Catalysts for the Electrochemical Oxygen Evolution Reaction via Spectroscopic Ellipsometry

Contact Info

Product

Resources

About

Assessing Optical and Electrical Properties of Highly Active IrO_x Catalysts for the Electrochemical Oxygen Evolution Reaction via Spectroscopic Ellipsometry