Here we elucidate the transformation of Co 3 O 4 nanoparticles to CoO into nanoscale detail by in situ heating in the transmission electron microscope (TEM), and we decipher the energetics and magnetic properties of the Co 3 O 4 /CoO interface from first principles calculations.

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 ...

2020年9月15日 · Their phase and morphology evolution are clarified by XRD, SEM and TEM measurements. The early formed CoO and Co 3 O 4 on surface from dual-phased Co promote the outdiffusion process of inside Co with kirkendall effect and restrict the growth of Co 3 O 4 with a specific orientation, leading to the formation of Co 3 O 4 nanoneedles on

Here we elucidate the transformation of Co 3 O 4 nanoparticles to CoO into nanoscale detail by in situ heating in the transmission electron microscope (TEM), and we decipher the energetics and magnetic properties of the Co 3 O 4 /CoO interface from first principles calculations.

Here we elucidate the transformation of Co 3 O 4 nanoparticles to CoO into nanoscale detail by in situ heating in the transmission electron microscope (TEM), and we decipher the energetics and magnetic properties of the Co 3 O 4 /CoO interface from first principles calculations.

The average size of Co 3 O 4 and CoO NPs measured by transmission electron microscopy (TEM) were 20.2 and 65.4 nm, respectively. TEM images showed that both NPs were spherical without porous...

Download scientific diagram | (a) Typical TEM image of CoO nanoparticles and (b) cumulative particle size distribution of CoO nanoparticles synthesized by cation exchange reaction. from ...

Co-CoO nanoparticles embedded in the nitrogen-doped carbon nanorods (Co-CoO/N-CNR) were synthesized and utilized as the cathode demonstrated a full discharge capacity of 10,555 mA h g −1 at 100...

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.

2022年10月31日 · The COO role has traditionally taken a backseat to other C-suite functions within the organization. Its recent resurgence and increasing visibility showcase the importance of the job in building resilience and positioning organizations for success in a dynamic and rapidly changing environment.