Cobalt　and　iron　selenides-based　materials　with　high　theoretical　capacities,　low　toxicity　and　abundant　sources　have　been　identified　as　the　promising　anode　materials　for　sodium-ion　batteries　(SIBs).　However,　they　still　face　the　challenges　of　high　volume　expansion　and　slow　electrode　kinetics,　resulting　in　poor　rate　performance　and　fast　capacity　fading.　In　this　paper,　three-dimensional　honeycomb-like　Co-Fe　based　selenide　composites　with　different　molar　ratios　are　successfully　synthesized　by　one-pot　solvothermal,　annealing　and　selenization　processes　(expressed　as　Co-FeSe2@C/CNs-fbs,　Co-FeSe2@C/CNs-irs　and　Co-FeSe2@C/CNs-sbs).　Benefitted　from　the　design　of　three-dimensional　porous　compositing　structure,　the　optimized　Co-FeSe2@C/CNs-fbs　electrode　material　possesses　more　active　sites　and　structural　stability,　resulting　in　stable　cycling　performance　and　fast　electron/ion　transport.　As　a　result,　Co-FeSe2@C/CNs-fbs　anode　shows　excellent　rate　capability　(353.1　mAh　g−1　at　120　A　g−1)　and　long　cycling　performance　(95.7%　of　capacity　retention　after　3700　cycles　at　60　A　g−1),　surpassing　most　previously　reported　anode　materials　for　SIBs.　Meanwhile,　a　full-cell　made　up　with　Na3V2(PO4)3/C　cathode　and　Co-FeSe2@C/CNs-fbs　anode　shows　a　high　energy　density　(180.1　Wh　kg−1　at　a　power　density　630.5　W　kg−1)　and　capacity　retention　rate.　This　study　provides　a　feasible　strategy　to　fabricate　selenide-based　composites　as　the　anode　materials　for　high-performance　SIBs　via　doping　and　structure　engineering.　©　2025　Taylor　&　Francis　Group,　LLC.