Transduction　coefficient　(d(33)xg(33))　is　the　core　parameter　for　evaluating　piezoelectric　energy　harvesting　materials.　However,　due　to　the　thermodynamic　constraints,　the　synergistic　variation　between　piezoelectric　charge　constant　(d(33))　and　dielectric　constant　(epsilon(r))　indeed　hinder　the　further　increase　of　d(33)xg(33).　Herein,　an　enhanced　d(33)xg(33)　of　13,000　x　10(-15)　m(2)/N　was　achieved　in　0.80BaTiO(3)-0.10CaTiO(3)-0.10BaZrO(3)　(BC(0.1)ZT)　lead-free　solid　solution　for　the　first　time　through　a　phase　boundary　engineering　strategy.　The　high　d(33)xg(33)　mainly　stems　from　non-synergistic　variation　of　dielectric　and　piezoelectric　performance　in　the　rhombohedral-orthorhombic　(R-O)　phase　boundary,　in　which　the　low　epsilon(r)　comes　from　the　increased　domain　size　and　reduced　domain　wall　density;　while　the　high　configurational　sensitivity　of　the　unique　domains　to　external　electric　field　contributed　to　the　high　d(33).　Our　findings　provide　an　alternative　approach　for　enhanced　energy　harvesting　performance　by　tracing　the　strategy　of　designing　phase　boundary　to　decouple　d(33)　and　epsilon(r).