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Hydrothermal synthesis and optimization of boron doped LiZr2(PO4)(3)Li-ion solid electrolyte
Authors: Yang, T; de Almeida, CMR; Han, DZ; Meng, LJ; Deng, JG; da Silva, EL; Santos, MC; Shi, SK
Ref.: Appl. Surf. Sci. 474, 250-255 (2019)
Abstract: Boron doped LiZr2(PO4)3 electrolyte was successfully synthesized via facile hydrothermal synthesis. Our results show that boron doping mainly happens on the Zr-site of Li1+xZr2-xBx(PO4)3 not the P-site of Li1+6xZr2(P1-xBxO4)3. Rietveld refinement of the unit-cell parameters was performed, and it was verified by consideration of Vegards law that it is possible to obtain phase purity up to x = 0.05 in Li1+xZr2-xBx(PO4)3. This corresponds with phases present in the XRD data, which shows the additional presence of the low temperature (monoclinic) phase for the powder sintered at 1200 C for 12 h of compositions with x ≥ 0.075. The compositions inside the solid solution undergo the phase transition from triclinic to rhombohedral when heating from 25 to 100 C.
