The　BaTiO3/BaTiO3@SiO2　(BT/BTS)　ceramics　with　layered　structure,　where　grain　size　was　about　1-2　mu　m　in　the　BT　layer　while　it　was　about　300-400　nm　in　the　BTS　layer,　were　fabricated　by　the　tape-casting　and　lamination　method.　With　the　increasing　of　SiO2　content　in　the　BTS　layer,　the　dielectric　constant　decreased　gradually,　and　the　breakdown　strength　was　remarkably　improved.　Compared　to　the　SiO2-added　BaTiO3　bulk　ceramics,　the　layered　ceramics　displayed　significant　enhancements　in　dielectric　properties,　breakdown　properties　and　energy　storage　properties.　The　enhancement　in　dielectric　properties　was　mostly　attributed　to　the　diluting　effects　created　by　this　structure　to　SiO2.　Based　on　the　finite　element　analysis　with　the　dielectric　breakdown　mode,　it　was　regarded　that　the　electric　field　redistribution　and　the　interface　blocking　effect　led　to　the　enhancement　of　breakdown　strength.　Finally,　the　maximum　energy　density　of　1.8　J/cm(3)　was　obtained　at　a　breakdown　strength　of　301.4　kV/cm　for　the　BT/BTS3　ceramic.　(C)　2017　Elsevier　Ltd.　All　rights　reserved.