Cyclic voltammetry (CV) and XRD patterns of the sample after different cycles indicate that faradaic reaction between Co and Co(OH)2 accounts for most of the discharge capacity.

Experimental XRD patterns of as-synthesized CoO nanocrystals for sample A and sample B. The bulk XRD pattern of cubic CoO is shown at bottom. A simple solvothermal strategy has been...

2021年10月25日 · We herein report a comprehensive investigation on the magnetic, structural, and electric properties of CoO nanoparticles with different sizes by local inspection through hyperfine interactions...

X-ray diffraction (XRD) analysis showed that the Co3O4 phase was formed in the surface of catalysts and the reducibility of Co3O4 nanoparticles on the ZSM-5-B was...

The calcination temperature was 550°C, and the products were characterized by element analysis, thermal analyses (TGA and DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), UV-Vis spectra, and scanning electron microscopy (SEM) techniques.

2019年11月25日 · At an intermediate substrate temperature between 773 K and 603 K, optimal to grow CoO and Co 3 O 4 (111) oriented films, it is possible to follow, by XRD and conductivity measurement, a sharp transition between CoO and Co 3 …

2024年10月10日 · XRD and HRTEM analyses revealed pure cubic phase CoO and Co3O4 nanoparticles. The formation and shapes of CoO nanoparticles are surfactant dependent, whereas the formation and morphologies of Co3O4 are time dependent.

2014年9月1日 · The results of XRD analysis showed that under pure nitrogen atmosphere nanoparticles of CoO were prepared, while the oxygen atmosphere led to a formation of Co 3 O 4 nanoparticles. At ambient temperatures Co 3 O 4 is thermodynamically stable; however, thanks to the slow kinetics and nanostructural nature CoO remained stable at ambient temperature.

2021年1月1日 · In the present study, cobalt oxide (Co 3 O 4) nanoparticles have been synthesized using cobalt nitrate as its source by precipitation approach. The structural properties of the synthesized Co 3 O 4 nanoparticles were studied using × ray diffraction (XRD). The XRD results confirm the crystalline nature of the nanoparticles.

2024年5月10日 · We present a multivariate Bayesian optimization, coupled with a data-driven classifier, to map the synthetic design space for colloidal CoO nanoparticles and simultaneously optimize them for multiple catalytically relevant features within a target crystalline phase.