Silicon-based　anodes,　utilizing　nanosized　silicon　materials,　hold　great　promise　for　the　next-generation　of　lithium-ion　batteries　due　to　their　high　capacity　and　stable　expansion.　This　study　aims　to　address　challenges　in　traditional　slurry-coated　anodes,　such　as　agglomeration　and　low　adhesive　strength,　through　the　application　of　laser　powder　bed　fusion　(LPBF).　The　process　involves　fabricating　an　Al-Si-Cu　alloy　layer　on　a　Cu　foil　current　collector,　followed　by　dealloying　to　create　a　porous　Si-Cu　anode.　Simulated　and　experimental　results　demonstrate　successful　alloy　layer　formation　through　optimized　laser　spot　(55　mu　m)　and　powder　sizes　(1-5　mu　m).　Controlled　cooling　produces　primary　Si　particles　ranging　from　150　nm　to　1　mu　m.　The　resulting　microstructure　enhances　electrochemical　performance,　particularly　by　tailoring　the　size　of　primary　Si.　The　resultant　porous　Si-Cu　anode,　featuring　uniformly　distributed　primary　Si　(200　nm)　metallurgically　bonded　with　Cu　networks,　exhibits　an　initial　coulombic　efficiency　of　83%　and　a　remarkable　capacity　retention　of　80%　after　300　cycles　at　2　C.　In-situ　and　ex-situ　observations　confirm　the　crucial　role　of　anode　architecture　in　performance　enhancement.　This　study　elucidates　the　influence　of　the　LPBF　microstructure　on　anode　performance　and　broadens　the　potential　application　of　laser　powder　bed　fusion　in　battery　manufacturing.　(c)　2024　Published　by　Elsevier　Ltd　on　behalf　of　The　editorial　office　of　Journal　of　Materials　Science　&　Technology.