A series of Er3+: KBaY(MoO4)3 phosphors were successfully synthesized utilizing a high temperature solid phase technique in this investigation. Their physical phases and structures were analyzed by XRD and Fourier infrared spectroscopy. The phosphorescent properties of KBaY(MoO4)3 doped with Er3+ at various concentrations were examined through analysis of both luminescence intensity and fluorescence lifetime, in both visible and near-infrared wavelengths. The impact of Er3+ ion concentration on the spectral properties of the phosphors was also studied. Experiments show that the fluorescence intensity is maximum when the Er3+ ion concentration is 5 mol%. This study has some reference significance for the development of new fluorescent materials.
Anode based on conversion alloying reactions are considered one of the prospective electrodes in lithium (Li)-ion batteries (LIBs). However, the tremendous volume change upon cycling induces significant capacity decay. Herein, a common method has been implemented for the synthesis of SnWO4 nanowires where bulky polyanions mitigate the structure stress. Thus, the SnWO4 nanowires are examined as an anode material for LIBs, which demonstrate an initial discharge-specific capacity of 1211.4 mAh g-1. In addition, the anode material is capable of delivering a stabilizing state capacity of almost 562 mAh g-1 under the 1 A g-1 current density after 100 cycles.
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