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 Li(1+x)Zr(2-x)Bx(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 Vegard's law that it is possible to obtain phase purity up to x = 0.05 in Li(1+x)Zr(2-x)Bx(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 degrees 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 degrees C. (C) 2018 Elsevier B.V. All rights reserved.