Pb-free　bulk　ceramics　(1-x)[0.65BiFeO3-0.35BaTiO3]-xBa(Zn1/3Nb2/3)O3　were　produced　by　traditional　solid-state　reaction　route.　In　this　experiment,　Ba(Zn1/3Nb2/3)O3　(BZN)　was　introduced　to　destroy　long-range　order　domains　in　order　to　obtain　higher　energy　storage　performance.　Impedance　and　XPS　analysis　indicate　that　oxygen　vacancies　exist　and　participate　in　relaxation　processes　at　high　temperatures.　With　the　increase　of　BZN　content,　the　dielectric　relaxation　behavior　is　improved,　the　hysteresis　loop　becomes　thinner,　remnant　polarization　decreases,　and　the　breakdown　electric　field　increases　to　180　kV/cm　in　15BZN.　A　maximum　Wrec　(1.62　J/cm3)　is　eventually　reached　in　7BZN　with　great　temperature　stability.　The　highest　efficiency　is　91%　in　15BZN　with　Wrec　of　1.28　J/cm3.　Charge-discharge　tests　show　that　ceramics　have　a　quick　discharge　time　of　t0.9　©　2020