Based　on　the　strong　demand　for　self-powered　wearable　electronic　devices,　flexible　piezoelectric　energy　harvesters　(FPEHs)　have　recently　attracted　much　attention.　A　polymer-based　piezocomposite　is　the　core　of　an　FPEH　and　its　transduction　coefficient　(d(33)xg(33))　is　directly　related　to　the　material＇s　power　generation　capacity.　Unfortunately,　the　traditional　0-3　type　design　method　generally　causes　a　weak　stress　transfer　and　poor　dispersion　of　the　filler　in　the　polymer　matrix,　making　it　difficult　to　obtain　a　highd(33)xg(33).　In　this　work,　a　unique　interconnected　skeleton　design　strategy　has　been　proposed　to　overcome　these　shortcomings.　By　using　the　freeze-casting　method,　an　ice-templated　2-2　type　composite　material　has　been　constructed　with　the　popular　piezoelectric　relaxor　0.2Pb(Zn1/3Nb2/3)O-3-0.8Pb(Zr1/2Ti1/2)O-3(PZN-PZT)　as　the　filler　and　PDMS　as　the　polymer　matrix.　Both　the　theoretical　simulation　and　the　experimental　results　revealed　a　remarkable　enhancement　in　the　stress　transfer　ability　and　piezoelectric　response.　In　particular,　the　2-2　type　piezocomposite　has　an　ultrahigh　transduction　coefficient　of　58　213　x　10(-15)m(2)N(-1),　which　is　significantly　better　than　those　of　previously　reported　composite　materials,　and　even　textured　piezoceramics.　This　work　provides　a　promising　paradigm　for　the　development　of　high-performance　FPEH　materials.