Nanoporous　metals　have　attracted　much　attention　in　energy　storage　due　to　their　nanoporous　structure,　large　specific　surface　area,　three-dimensional　(3D)　conductive　network,　and　excellent　ductility.　Especially　as　a　current　collector,　nanoporous　metals　have　unparalleled　advantages.　In　this　work,　we　develop　a　facile　method　to　fabricate　Si-Ni　nanofoam　composites　for　a　high-loading　Si　anode　in　a　lithium　(Li)-ion　battery.　The　Si　particles　in　the　composites　take　full　advantage　of　Ni　nanofoams　to　overcome　the　series　of　problems　caused　by　the　volume　expansion　of　Si　materials.　By　introducing　a　constant　current-constant　voltage　mode,　as　a　high-loading　Si　anode,　the　composite　electrode　exhibits　high　capacity　and　excellent　cycling　performance　(1.39　mAh　cm-2　after　100　cycles,　with　69.5%　capacity　retention).　In　addition,　the　scanning　electron　microscopy　(SEM)　image　after　the　cycles　shows　that　the　Ni　nanofoams　can　play　a　role　similar　to　the　steel　mesh　in　reinforced　concrete,　stabilize　the　composite　electrode　structure,　and　improve　the　Li　storage　performance.　©　2022　American　Chemical　Society.