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In this work, spherical Na(La,RE)(MoO${}_4{)}_2$ (RE = Eu/Yb-Er) double molybdates were prepared using the rare earth hydroxide (La,RE)(OH)SO₄ as a self-sacrificing template. The composition, structure, morphology, up/down conversion luminescence and fluorescence lifetime (FL) of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), fluorescence spectrophotometer, and Fourier transform infrared (FT-IR) spectrophotometer. The results indicate that highly pure spherical Na(La,RE)(MoO${}_4{)}_2$ (RE = Eu/Yb-Er) samples can be obtained from the proposed route. The room temperature and temperature-dependent up/down conversion luminescence properties of the resulting Na(La,RE)(MoO${}_4{)}_2$ (RE = Eu/Yb-Er) phosphors were analyzed in detail. The temperature-sensing performances for the two phosphors in both fluorescence intensity ratio (FIR) and FL modes were evaluated. Classical down and up-conversion photoluminescence (PL) from Eu${}^{3+}$ and Er${}^{3+}$ were observed. The down conversion phosphors were proved to be capable of sensing temperature via FL mode, and the maximum absolute sensitivity (S_A) and maximum relative sensitivity (S_R) were found to be $59\times 10^{-4}$K${}^{-1}$ (298K) and $52\times 10^{-4}$K${}^{-1}$ (523K), respectively. The up conversion phosphors Na(La,Yb,Er)(MoO${}_4{)}_2$ were well capable of sensing temperature via FIR mode through thermally coupled ²H${}_{11/2}$, ⁴S${}_{3/2}$ levels (I${}_{520}$/I${}_{551})$, and the maximum absolute sensitivity (S_A) and maximum relative sensitivity (S_R) were found to be $35\times 10^{-4}$K${}^{-1}$ (523K) and $115\times 10^{-4}$K${}^{-1}$ (348K), respectively.

Highly ordered spherical LiFePO₄ is synthesized by an intermittent microwave heating assisted water-bath reaction and the resulted LiFePO₄ shows high tap-density of 2.0 g cm^-3 and volumetric specific capacity of 325 mAh cm^-3 when used as cathode material in Li-ion battery. The high performance of the ordered spherical LiFePO₄ is explained in terms of the high conductivity and the improved mass transfer kinetics. Such highly ordered spherical LiFePO₄ with improved volumetric specific capacity will be potentially used in the high-power Li-ion batteries for electric vehicles.

The paper which is based on combination of polyhedron theory studys the fundamental laws and the configuration characteristics of irregular triangular spherical shell. Then it realized the design and visual modeling of irregular spherical latticed silo roof on the computer. The silo roof is a kind of space assembly structure. Its construction is convenient so that it has short construction period and low cost. It also has attractive appearance. Above all it has broad application prospects.