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.