Due　to　the　highly　porous　structure,　large　specific　surface　area,　and　3D　interconnected　metal　conductive　network,　nanoporous　metal　foams　have　attracted　a　lot　of　attention　in　the　field　of　energy　conversion　and　storage,　especially　lithium-ion　batteries,　which　are　ideal　for　current　collectors.　In　this　work,　we　develop　a　facile　approach　to　fabricate　core-shell　Ni3Se2/Ni　nanofoams　composites.　The　Ni3Se2/Ni　composites　make　full　use　of　both　the　advantages　of　metal　conductive　network　and　core-shell　structure,　resulting　in　a　high　capacity　and　superior　rate　performance.　In　addition,　the　composites　can　be　directly　converted　into　electrode　by　a　simple　mechanical　compression,　which　is　more　convenient　than　traditional　casting　method.　What＇s　more,　this　material　and　its　structure　can　be　extended　to　other　devices　in　the　field　of　energy　conversion　and　storage.　©　2019