In　this　study,　highly　loaded　tin　oxide-based　(SnO2-based)　porous　electrodes　were　prepared　by　digital　light　processing　(DLP)　3D　printing　technology.　Firstly,　the　SnO2　light-cured　slurry　was　prepared.　The　curing　process　and　heat　treatment　process　were　analyzed　and　optimized.　Then　the　best　process　parameters　were　obtained.　Antimony　oxide　(Sb2O3)　was　selected　as　the　conductive　agent　to　improve　the　electrical　con-ductivity　of　the　SnO2-based　electrode.　Through　the　characterization　of　resistivity,　SEM　and　XRD,　the　op-timum　doping　amount　of　conductive　agent　Sb2O3　was　determined　to　be　6　wt.　%.　Three　kinds　of　porous　electrodes　with　different　shapes　were　prepared　by　DLP　3D　printing,　and　the　printing　accuracy　and　me-chanical　properties　were　characterized.　The　results　showed　that　the　forming　dimension　error　was　about　1.7　%　in　the　X　and　Y　direction,　2.3　%　in　the　Z　direction.　And　the　average　compressive　strength　was　18.1　MPa,　which　effectively　ensured　the　shape　integrity　and　mechanical　stability　of　the　printed　parts.　Then　the　electrochemical　properties　of　DLP　3D　printed　SnO2-based　electrode　and　conventional　coated　electrode　were　tested　and　compared.　The　results　showed　that　the　3D　printed　porous　electrode　showed　lower　charge　transfer　impedance　and　higher　ion　diffusion　efficiency,　and　the　maximum　charge　transfer　impedance　could　be　reduced　to　1/25　of　the　traditional　electrode;　At　the　same　time,　it　showed　better　cycle　performance　and　rate　performance,　and　the　capacity　retention　of　the　3D　printed　porous　electrode　could　be　improved　by　about　29.0　%　compared　with　the　traditional　electrode.　This　work　shows　that　high-performance　high-load　porous　electrodes　can　be　accurately　prepared　by　DLP　3D　printing,　which　provides　a　new　strategy　for　the　future　development　of　high-load　thick　electrodes.　(c)　2022　Elsevier　B.V.　All　rights　reserved.