Structural degradation is the main challenge of Nickel‐rich cathodes, leading to capacity and voltage fading, especially at high cut‐off voltages. Herein, LiNi _0.94‐x Co _0.06 Mg _x O ₂ (x=0, 0.01, 0.02) samples have been prepared by high‐temperature solid‐state reaction method. The effects of Mg doping on its crystalline structure, and electrochemical performance have been studied by various characterizations analysis. We notice that Mg doping can not only tighten the structure/interface stability of the cathode, but also accelerates the Li ⁺ diffusion, thereby significantly achieving its high voltage/cycle stability. High‐voltage (4.5 V) electrochemical results show that Mg‐doped LiNi _0.94 Co _0.06 O ₂ (1 % Mg) can achieve a high reversible capacity of 217.5 mAh g ⁻¹ at 0.2 C, high cycle retention rate of 80.5 % after 100 cycles at 0.2 C, inhibits average voltage decay, suppress resistance rise and boosted rate performance. Our work provides a solid strategy for improving the structure and voltage decay of nickel‐rich cathode materials for future high‐energy lithium‐ion batteries.

The interesting properties of hexagonal boron nitride (h-BN) and its potential uses in thermo-structural advanced applications have been limited or restricted by its inherent brittleness, which can easily be eliminated by its fibers (h-BN) in nanoscale dimensions. The current study is based on the synthesis of nanoscale ¹⁰B-enriched fibers of h-BN (¹⁰BNNFs) from ¹⁰B in the precursors instead of B in two-hour annealing at 900 °C and one-hour growth at 1000 ^°C. All of the ¹⁰BNNFs are randomly curved and highly condensed or filled from ¹⁰h-BN species with no internal space or crack. XRD peaks reported the ¹⁰h-BN phase and highly crystalline nature of the synthesized ¹⁰BNNFs. ¹⁰h-BN phase and crystalline nature of ¹⁰BNNFs are confirmed from high-intensity peaks at 1392 (cm⁻¹) in Raman and FTIR spectroscopes.

Surface plasmon polaritons (SPPs) are investigated theoretically at the interface between silver metal and a hybrid system containing silver metal nanoparticles (MNPs) and semiconductor triple quantum dot (STQD). Various properties of SPPs are studied by varying the distance between silver MNP and SQD, radii of the MNP in the hybrid medium, and gate voltage applied to the TQD. A remarkable modification up to 315 μ m is obtained in the SPPs’ propagation length by considering different sizes of silver MNPs in the hybrid medium. The wavelength of the SPPs is controlled via changing the distance between the MNPs and TQD, and gate voltages applied to TQD in the hybrid medium. Furthermore, we have studied the effect of various parameters such as gate voltages and radii of the MNPs on the penetration depth of SPPs into both sides of the interface of silver metal and hybrid medium. Plasmonic regions consisting of hybrid medium and silver metal provide multiple dimensions for the generation and control of SPPs. Therefore, it is assumed that these findings may have important applications in bio-sensors, atomic spectroscopy, photovoltaic devices, surface-enhanced Raman spectroscopy, solar cells, and plasmon technology.