Structural, optical and electrical properties of pure and Fe doped V2O5 nanoparticles for junction diode fabrications

A Nonaqueous Eutectic Electrolyte for Rechargeable Iron Batteries

“…The peaks at ∼530.5 eV and at 531.9 eV correspond to the terminal (O) and linkage (−O−) oxygen species, respectively . An additional peak observed at ∼532.9 eV is attributed to the presence of hydroxyl oxygen (−OH), which may have originated from the hydrothermal synthesis procedure or due to exposure to ambient humidity. , Significant changes were observed in the cycled V 2 O 5 electrode, as evidenced by a considerable shift in the V 2p and O 1s bands toward lower energy ranges, as shown in Figure (e) and (f), respectively. This shift may be attributed to the likely event of V +5 (or V +4 ) reduction to V +3 or (V +2 ). , The XPS band shift toward lower energy can be rationalized by the interaction of V 2 O 5 with Fe-ions such as Fe 2 Cl 7 – during charging, resulting in a chemical conversion reaction.…”

“…The V 2p spectra, depicted in Figure (c), were deconvoluted into peaks with binding energies maxima at 517.6 eV, 525.3 eV, 516.4 eV, and 524.1 eV, corresponding to the V +5 2p 3/2 , V +5 2p 1/2 , V +4 2p 3/2 , and V +4 2p 1/2 oxidation states, respectively. , In Figure (d), the O 1s band was deconvoluted into three distinct peaks, pointing to the successful formation of V 2 O 5 phase. The peaks at ∼530.5 eV and at 531.9 eV correspond to the terminal (O) and linkage (−O−) oxygen species, respectively . An additional peak observed at ∼532.9 eV is attributed to the presence of hydroxyl oxygen (−OH), which may have originated from the hydrothermal synthesis procedure or due to exposure to ambient humidity. , Significant changes were observed in the cycled V 2 O 5 electrode, as evidenced by a considerable shift in the V 2p and O 1s bands toward lower energy ranges, as shown in Figure (e) and (f), respectively.…”

“…55 An additional peak observed at ∼532.9 eV is attributed to the presence of hydroxyl oxygen (−OH), which may have originated from the hydrothermal synthesis procedure or due to exposure to ambient humidity. 55,56 Significant changes were observed in the cycled V 2 O 5 electrode, as evidenced by a considerable shift in the V 2p and O 1s bands toward lower energy ranges, as shown in Figure 6(e) and (f), respectively. This shift may be attributed to the likely event of V +5 (or V +4 ) reduction to V +3 or (V +2 ).…”

“…The peaks at ∼530.5 eV and at 531.9 eV correspond to the terminal (�O) and linkage (−O−) oxygen species, respectively. 55 An additional peak observed at ∼532.9 eV is attributed to the presence of hydroxyl oxygen (−OH), which may have originated from the hydrothermal synthesis procedure or due to exposure to ambient humidity. 55,56 Significant changes were observed in the cycled V 2 O 5 electrode, as evidenced by a considerable shift in the V 2p and O 1s bands toward lower energy ranges, as shown in Figure 6(e) and (f), respectively.…”