We report a green and novel solution method for making pristine Co3O4 and mixed phase CoO@Co3O4@C composite anode electrodes in LIBs. The anode materials characterized by X-ray diffraction...

Co3O4 is Hausmannite structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. there are two inequivalent Co+2.67+ sites. In the first Co+2.67+ site, Co+2.67+ is bonded to six equivalent O2- atoms to form CoO6 octahedra that share corners with six equivalent CoO4 tetrahedra and edges with six equivalent ...

These electrochromic performances make cobalt oxide thin film an attractive material for using as an anodic electrochromic material in smart windows devices. The photoluminescence spectra exhibited...

2013年10月1日 · In this paper we have adopted a simple co-precipitation method to obtain Co 3 O 4 nanoflakes. This method does not need special conditions like high temperature, special surfactant or temperature and pressure controlling. The properties of the as synthesized material were characterized by XRD, FTIR, UV–Vis-DRS, SEM, EDAX, XPS and HR-TEM analyses.

Development of Spacecraft Black Thermal Control Coatings Using the Synthesized Mesoporous Co3O4 Pigment

2019年12月3日 · Tricobalt tetroxide (Co3O4) nanoparticles were synthesized by co-precipitation method. The structure, morphology, purity, real compositions, and functional groups of the prepared nanoparticles were determined by X-ray diffraction (XRD), transmission electron microscope (TEM), energy-dispersive X-ray (EDX) analysis, and Fourier transform ...

2008年7月10日 · Figlarz et al. found that the hexagonal Co 3 O 4 was obtained by the decomposition of CoO (OH) at approximately 250 °C, based on analysis by X-ray diffraction (XRD) and selected-area electron diffraction (SAED).

Los resultados de DRX obtenidos indican la formación de la fase pura espinela Co3O4 con transición de fase a 917 °C a CoO, óxidos de Co3-xNixO4 con estructura espinela se obtuvieron por las dos técnicas de síntesis calcinados hasta 600 °C, a 800 °C se evidenció la aparición de una fase secundaria de NiO.

对四种不同形貌Co3O4材料的丙烷氧化活性进行比较，发现书状的Co3O4（Co3O4-B）表现出最佳的丙烷氧化活性，在278 °C下丙烷转化率达90%以上。 在动力学区间测定了不同形貌Co3O4的反应活化能，并比较了丙烷的比反应速率和TOFs（220 °C）。

We herein report the preparation of Co3O4, α-Fe2O3, and CoFe2O4 nanostructures through a hydrothermal method followed by a subsequent heat treatment. The as-prepared nanostructures exhibited good...