The　piezoelectric　charge　coefficient　(　d　)　and　transduction　coefficient　(　d　x　g　)　of　piezoelectric　materials　are　the　key　factors　that　determine　the　power　generation　performance　of　piezoelectric　nanogenerators　(PENGs).　However,　it　is　becoming　more　difficult　to　achieve　further　large　improvements　in　the　values　of　these　coefficients.　In　this　work,　we　propose　a　new　strategy　to　enhance　the　output　performance　of　the　PENGs　by　regulating　the　internal　resistance.　The　internal　resistance　of　Ba　0.85　Ca　0.15　Zr　0.1　Ti　0.9　O　3　(BCZT)　PENG　was　reduced　by　substituting　BaZrO　3　with　lowresistivity　BaSnO　3　to　obtain　high-performance　Ba　0.85　Ca　0.15　Sn　x　Zr　0.1-　x　Ti　0.9　O　3　(BCS　x　Z　0.1-　x　T)　PENGs.　Although　the　piezoelectric　properties　(　d　and　d　x　g　)　of　BCS　x　Z　0.1-　x　T　deteriorated　with　increasing　Sn　content,　the　power　generation　capability　was　markedly　improved:　the　maximum　current　density　(1.27　mu　A/mm　2　)　and　power　density　(3.09　mu　W/　mm　3　)　were　obtained　for　BCS　0.03　Z　0.07　T　PENG,　reflecting　increases　of　approximately　44%　and　18%　compared　with　those　values　of　BCZT　PENG,　respectively.　This　work　is　expected　to　provide　a　new　way　to　develop　highperformance　PENG　materials　and　benefit　a　wide　range　of　energy　harvesting　materials.