Sodium　ion　batteries　(SIBs)　represent　an　effective　energy　storage　technology　with　potentially　lower　material　costs　than　lithium　ion　batteries.　Here,　we　show　that　the　electrochemical　performance　of　SIBs,　especially　rate　capability,　is　intimately　connected　to　the　electrode　design　at　the　nanoscale　by　taking　anatase　TiO2　as　an　example.　Highly　ordered　three-dimensional　(3D)　Ni-TiO2　core-shell　nanoarrays　were　fabricated　using　nanoimprited　AAO　templating　technique　and　directly　used　as　anode.　The　nanoarrays　delivered　a　reversible　capacity　of　similar　to　200　mAh　g(-1)　after　100　cycles　at　the　current　density　of　50　mAh　g(-1)　and　were　able　to　retain　a　capacity　of　similar　to　95　mAh　g(-1)　at　the　current　density　as　high　as　5　A　g(-1)　and　fully　recover　low　rate　capacity.　High　ion　accessibility,　fast　electron　transport,　and　excellent　electrode　integrity　were　shown　as　great　merits　to　obtain　the　presented　electrochemical　performance.　Our　work　demonstrates　the　possibility　of　highly　ordered　3D　heterostructured　nanoarrays　as　a　promising　electrode　design　for　Na　energy　storage　to　alleviate　the　reliance　on　the　materials　intrinsic　nature　and　provides　a　versatile　and　cost-effective　technique　for　the　fabrication　of　such　perfectly　ordered　nanostructures.