Studies on the Equilibrium Diagram of the System Nickel Sulfide-Copper Sulfide-Iron Sulfide (Part 1)

Iron Sulfide Formation

Structural studies of copper sulfide films: effect of ambient atmosphere.

We examined the structural properties of copper sulfide films as a function of the sulfurization time of 70-nm-thick Cu films. Copper sulfide films with various phases such as mixed metallic Cu-chalcocite, chalcocite, roxbyite, and covellite phases were formed with increasing sulfurization time. To evaluate the structural stability of various films, all the films were exposed to the ambient atm...

Kinetics of Iron Sulfide and Mixed Iron Sulfide/carbonate Scale Precipitation in Co2/h2s Corrosion

Glass cell experiments were conducted to investigate kinetics of iron sulfide and mixed iron sulfide/carbonate scale precipitation in CO2/H2S corrosion. Weight gain/loss (WGL) method was used to investigate the scale formation using X65 carbon steel as substrates. Scanning Electron Microscopy (SEM/EDS), X-ray Diffraction methodology (XRD), X-ray Photoelectron Spectroscopy (XPS), and Electron Pr...

Uniform yolk-shell iron sulfide-carbon nanospheres for superior sodium-iron sulfide batteries.

Sodium-metal sulfide battery holds great promise for sustainable and cost-effective applications. Nevertheless, achieving high capacity and cycling stability remains a great challenge. Here, uniform yolk-shell iron sulfide-carbon nanospheres have been synthesized as cathode materials for the emerging sodium sulfide battery to achieve remarkable capacity of ∼ 545 mA h g(-1) over 100 cycles at 0....

Biological Sulfide Oxidation: Sulfide-Quinone Reductase (SQR), the Primary Reaction