Iron　selenides　are　considered　as　potential　anode　materials　for　sodium-ion　batteries　(SIBs)　because　of　its　low　cost　and　high　theoretical　specific　capacity.　Yet　the　severe　volume　expansion　leading　to　capacity　degradation　has　critically　hindered　its　utilization　in　SIBs.　Herein,　FeSe2　with　layered　hollow　structure　(noted　as　LH-FeSe2)　was　designed　and　synthesized　by　KCl　template　method.　Hollow　nanostructures　formed　by　salt　templates　alleviate　the　capacity　attenuation　caused　by　volume　expansion,　and　the　interlayer　structure　of　LH-FeSe2　also　increases　the　Na+　storage　capacity　and　ion　diffusion　rate.　The　as-acquired　LH-FeSe2　performs　good　cycling　stability　with　high　retention　capacity　of　517　mA　h　g−1　after　500　cycles　at　1　A　g−1.　In　addition,　LH-FeSe2　with　small　specific　surface　area　shows　extremely　high　pseudocapacitive　behavior,　suggesting　that　it　is　an　intrinsic　pseudocapacitive　material.　This　method　provides　a　new　horizon　for　the　preparation　of　high-performance　anode　materials　for　SIBs.　©　2023　Elsevier　B.V.