Antiferroelectric　(AFE)　materials　have　superior　energy　storage　properties　in　high　power　multilayer　ceramic　capacitors　(MLCCs).　To　adapt　to　the　sintering　temperature　of　inner　metal　electrodes　with　less　palladium　content,　in　this　work,　Al2O3　was　added　to　Pb0.95Ta0.02Sr0.02(Zr0.50Sn0.10Ti0.10)O-3　(PLSZST)　AFE　ceramics,　in　an　attempt　to　reduce　the　sintering　temperature.　Results　of　this　study　demonstrate　that　the　optimal　composition　of　PLSZST-0.8　wt%　Al2O3　sintered　at　a　lower　temperature　1040　degrees　C,　has　a　high　recoverable　energy　density　(W-re,　3.23　J/cm(3))　and　a　high　efficiency　(eta,　90　%)　at　room　temperature.　It　is　also　high　in　pulse　discharge　energy　density　(W-dis,　2.45　J/cm(3)),　current　density　(1369　A/cm(2)),　and　has　an　extremely　short　period　of　discharge　(less　than　500　ns).　In　addition,　both　W-re　and　eta　demonstrate　a　good　stability　in　temperature　within　a　wide　range　of　30　degrees　C-100　degrees　C.　In　sum,　this　novel　AFE　composition　has　great　potentials　for　energy　storage　applications　such　as　high　energy　density　MLCCs.