No abstract

No abstract

A facile synthesis of perovskite-type CeMnO3 nanofibers as a high performance anode material for lithium-ion batteries was demonstrated.

No abstract

No abstract

Perovskite‐type CeMnO3 nanofibers (NFs) were effectively synthesized via electrospinning and consequent calcination processes. The nanofibers with porous surface exhibit a high specific surface area of 103.88 m2 g−1 with mesopores. The perovskite CeMnO3 NFs were characterized by X‐ray diffraction, Raman spectroscopy, UV‐vis diffuse reflectance spectrum, and X‐ray photoelectron spectroscopy. The microstructure and morphology of CeMnO3 were observed by scanning electron and transmission electron microscopes. The Energy‐dispersive X‐ray spectroscopy manifested the homogeneous distribution of cerium, manganese, and oxygen. The electrochemical properties of CeMnO3 NFs were implemented using cyclic voltammetry and galvanostatic charge‐discharge in alkaline aqueous electrolyte. The Faradic redox reaction occurred at the electrode surface was precisely concluded. The specific capacitance of CeMnO3 NFs was 159.59 F g−1 at the current density of 1 A g−1. This research offers a new strategy to synthesize CeMnO3 perovskite material for high‐performance supercapacitor, indicating its potential application as a supercapacitor electrode in energy storage devices.

The ternary-layered oxide (LiNi x Co y Mn z O 2) has become the most promising cathode material for lithium-ion batteries due to the advantages of higher discharge platform, better conductivity, and higher theoretical capacity. The [Ni x Co y Mn z ](OH) 2 with different ratios of nickel, cobalt, and manganese (NCM) was prepared by solvothermal method, and then ternary cathode material LiNi x Co y Mn z O 2 was obtained by mixing lithium and calcining. In this paper, ternary cathode materials with different ratios of NCM were prepared by the solvothermal method. The structure and morphology of the materials were analyzed by X-ray diffraction, scanning electron microscopy, and energydispersive spectroscopy. The effects of the ratio on the electrochemical properties of the materials were investigated by constant current charge and discharge test and electrochemical impedance spectroscopy test. The synthesized lithium-nickel-cobalt-manganese oxide belongs to the hexagonal system and has an α-NaFeO 2 layered structure, which is an R-3m space group. The NCM ternary cathode materials with different morphologies were obtained by changing the ratio of NCM. The sample with NCM ratio of 5:3:2 has a unique sheet-like spherical shape and has the best rate performance. K E Y W O R D S [Ni x Co y Mn z ](OH) 2 , proportional control, ternary cathode

No abstract