[1] [1] DE A A SOLER-ILLIA G J, SANCHEZ C, LEBEAU B, et al. Chemical strategies to design textured materials: from microporous and mesoporous oxides to nanonetworks and hierarchical structures［J］. Chemical Reviews, 2002, 102(11): 4093-4138.

[2] [2] PATOUX S, WURM C, MORCRETTE M, et al. A comparative structural and electrochemical study of monoclinic Li3Fe2(PO4)3 and Li3V2(PO4)3［J］. Journal of Power Sources, 2003, 119/120/121: 278-284.

[3] [3] HUANG H, YIN S C, NAZAR L F. Approaching theoretical capacity of LiFePO4 at room temperature at high rates［J］. Electrochemical and Solid-State Letters, 2001, 4(10): A170.

[4] [4] MENG L, YANG L G, ZHOU B, et al. Cerium phosphate nanotubes: synthesis, characterization and biosensing［J］. Nanotechnology, 2009, 20(3): 035502.

[5] [5] MEISER F, CORTEZ C, CARUSO F. Biofunctionalization of fluorescent rare-earth-doped lanthanum phosphate colloidal nanoparticles［J］. Angewandte Chemie International Edition, 2004, 43(44): 5954-5957.

[6] [6] XU Z H, CAO Y, LI C X, et al. Urchin-like GdPO4 and GdPO4∶Eu3+ hollow spheres-hydrothermal synthesis, luminescence and drug-delivery properties［J］. Journal of Materials Chemistry, 2011, 21(11): 3686.

[7] [7] DENG L H, ZHANG R N, ZHANG J E, et al. Stereochemically active tin(Ⅱ)-induced enhancement of birefringence in SnIISnIV(PO4)2 and SrSn(PO4)PO2(OH)2［J］. Chemistry-A European Journal, 2023, 29(41): e202300743.

[8] [8] WU M F, FENG J W, XIE C W, et al. From phosphate fluoride to fluorophosphate: design of novel ultraviolet/deep-ultraviolet nonlinear optical materials for BePO3F with optical property enhancement［J］. ACS Applied Materials & Interfaces, 2022, 14(34): 39081-39090.

[9] [9] JIA M H, CHENG X Y, WHANGBO M H, et al. Second harmonic generation responses of KH2PO4: importance of K and breaking down of Kleinman symmetry［J］. RSC Advances, 2020, 10(44): 26479-26485.

[10] [10] ZHANG L S, XU M X, LIU B A, et al. New annealing method to improve KD2PO4 crystal quality: learning from high temperature phase transition［J］. CrystEngComm, 2015, 17(25): 4705-4711.

[11] [11] ANIS M, HUSSAINI S S, SHKIR M, et al. Uncovering the influence of Ni2+ on optical and dielectric properties of NH4H2PO4 (ADP) crystal［J］. Optik, 2018, 157: 592-596.

[12] [12] LIU S, SHAO L Y, ZHANG X J, et al. KTiOPO4 as a novel anode material for sodium-ion batteries［J］. Journal of Alloys and Compounds, 2018, 754: 147-152.

[13] [13] LI Z Q, CHEN Y, ZHU P F, et al. Electronic structure and properties of RbTiOPO4∶Ta crystals［J］. RSC Advances, 2017, 7(84): 53111-53116.

[14] [14] CHEN J E, XIONG L, CHEN L, et al. Ba2NaClP2O7: unprecedented phase matchability induced by symmetry breaking and its unique fresnoite-type structure［J］. Journal of the American Chemical Society, 2018, 140(43): 14082-14086.

[15] [15] ZHAO S G, YANG X Y, YANG Y, et al. Non-centrosymmetric RbNaMgP2O7 with unprecedented thermo-induced enhancement of second harmonic generation［J］. Journal of the American Chemical Society, 2018, 140(5): 1592-1595.

[16] [16] YU H W, YOUNG J, WU H P, et al. M4Mg4(P2O7)3 (M=K, Rb): structural engineering of pyrophosphates for nonlinear optical applications［J］. Chemistry of Materials, 2017, 29(4): 1845-1855.

[17] [17] ZHAO S G, GONG P F, LUO S Y, et al. Tailored synthesis of a nonlinear optical phosphate with a short absorption edge［J］. Angewandte Chemie International Edition, 2015, 54(14): 4217-4221.

[18] [18] ZHAO S G, GONG P F, LUO S Y, et al. Deep-ultraviolet transparent phosphates RbBa2(PO3)5 and Rb2Ba3(P2O7)2 show nonlinear optical activity from condensation of ［PO4］3- units［J］. Journal of the American Chemical Society, 2014, 136(24): 8560-8563.

[19] [19] KEFFER C, MIGHELL A D, MAUER F, et al. Crystal structure of twinned low-temperature lithium phosphate［J］. Inorganic Chemistry, 1967, 6(1): 119-125.

[20] [20] XU Y N, CHING W Y, CHIANG Y M. Comparative studies of the electronic structure of LiFePO4, FePO4, Li3PO4, LiMnPO4, LiCoPO4, and LiNiPO4［J］. Journal of Applied Physics, 2004, 95(11): 6583-6585.

[21] [21] GHULE A, BASKARAN N, MURUGAN R, et al. Phase transformation studies of Na3PO4 by thermo-Raman and conductivity measurements［J］. Solid State Ionics, 2003, 161(3/4): 291-299.

[22] [22] VORONIN V I, PONOSOV Y S, BERGER I F, et al. Crystal structure of the low-temperature form of K3PO4［J］. Inorganic Materials, 2006, 42(8): 908-913.

[23] [23] VORONIN V I, BERGER I F, PROSKURNINA N V, et al. Crystal structure of the low-temperature forms of cesium and rubidium orthophosphates［J］. Inorganic Materials, 2008, 44(6): 646-652.

[24] [24] SEGALL M D, LINDAN P J D, PROBERT M J, et al. First-principles simulation: ideas, illustrations and the CASTEP code［J］. Journal of Physics: Condensed Matter, 2002, 14(11): 2717-2744.

[25] [25] PERDEW J P, ZUNGER A. Self-interaction correction to density-functional approximations for many-electron systems［J］. Physical Review B, 1981, 23(10): 5048.

[26] [26] BONDAREVA O S, SIMONOV M A, BELOV N V. Crystal structure of the synthetic analog of lithiophosphatite γ-Li3PO4［J］. journal of international economics, 1978.

[27] [27] HARRISON R J, PUTNIS A, KOCKELMANN W. Phase transition behaviour and equilibrium phase relations in the fast-ion conductor system Na3PO4-Na2SO4［J］. Physical Chemistry Chemical Physics, 2002, 4(14): 3252-3259.

[28] [28] JSTEL T, HUPPERTZ P, MAYR W, et al. Temperature-dependent spectra of YPO4∶Me (Me=Ce, Pr, Nd, Bi)［J］. Journal of Luminescence, 2004, 106(3/4): 225-233.