Syntheses, characterization, magnetic, and electrochemical properties of perovskite‐type NdFeO₃ and NdCoO₃ nanofibers

Abstract

In this work, perovskite-type NdFeO 3 and NdCoO 3 nanofibers (NFs) were synthesized, and the magnetic and electrochemical characteristics of the two samples were investigated. The NdFeO 3 NFs showed ferromagnetic performance at 298 K and paramagnetic characteristics at low temperatures, whereas the NdCoO 3 NFs showed paramagnetic behavior. The NdFeO 3 and NdCoO 3 electrodes exhibited favorable electrochemical performance in supercapacitors and Li-ion batteries. Therefore, this study demonstrated the potential applications of NdFeO 3 and NdCoO 3 NFs in the field of condensed matter physics and energy storage devices.

Efficient treatment for oily wastewater via photo‐Fenton‐like processover NdFeO3 perovskite: Effect of calcination temperature

“…This implies the valence state of Nd element is +3 in NFO calcined at 800 °C [52] . In Figure 5b, the peaks located at 710.7 eV and 724.8 eV are attributed to the spin‐orbit splitting of 2p 3/2 and 2p 1/2 of Fe 3+ ions in obtained sample [53] . The XPS spectrum of O1s demonstrated a weak peak located at 529.2 eV and a stronger one centred at 531.5 eV, corresponding to two kinds of oxygen in the NFO surface.…”

“…[52] In Figure 5b, the peaks located at 710.7 eV and 724.8 eV are attributed to the spin-orbit splitting of 2p 3/2 and 2p 1/2 of Fe 3 + ions in obtained sample. [53] The XPS spectrum of O1s demonstrated a weak peak located at 529.2 eV and a stronger one centred at 531.5 eV, corresponding to two kinds of oxygen in the NFO surface. The former at a low binding energy could be attributed to lattice oxygen while the latter at a high binding energy was ascribed to surface adsorbed oxygen.…”

Double Perovskite La2MnNiO6 as a High‐Performance Anode for Lithium‐Ion Batteries

“…Figure 4e exhibits the plot of specific capacity versus C‐rate for comparing our work with other published perovskite type anodes. [ 9,34,38,49–56 ] Comparatively, LMNO‐S displays higher rate capability than most reported values. As given in Figure 4f, an activation process was observed during the cycle process at 1C, showing a slowly growing and then reducing tendency of specific capacity (from initial value of 192 mAh g −1 to maximum value of ≈230 mAh g −1 ).…”

Interaction Between Prussian Blue Ultrathin Nanosheet and Ammonium Perchlorate for Highly Efficient Thermal Decomposition

“…Similarly, for PB-NSa-48 h b), the characteristic peaks of 724.6 and 721.4 eV correspond to Fe 2p 1/2 , and the characteristic peaks of 712.6 and 708.5 eV correspond to Fe 2p 3/2 . [37][38][39][40] The characteristic peaks with high binding energy represent the existence of Fe 3+ , and the low binding energy partly proves the existence of Fe 2+ . Comparing the Fe 2p results of PB-NSa-1 h and PB-NSa-48 h, although the reaction time is different, the existence form of Fe is basically the same, which verifies the previously speculated initial rapid nucleation and growth behavior induced by electron transfer between Fe 2+ /Fe 3+ , that is, when the PB-NSa are formed, Fe coexists in the form of +2 and +3 valence.…”