Nanostructured　electrode　materials　have　attracted　enormous　attention　because　of　their　kinetic　advantages　endorsed　by　nanoscale　regime.　Densification　is　required　to　improve　their　volumetric　densities　for　practical　applications　but　is　challenged　by　the　loss　of　kinetic　features.　In　this　work,　a　nano-densification　strategy　is　developed　by　co-sintering　nanosized　titanate　with　a　phosphate　agent　and　acid-treated　carbon　black.　Experimental　studies　reveal　that　the　formation　of　TiOP　bonds　energetically　facilitates　the　dissociation　of　crystal　water　in　titanate,　enabling　lower-temperature　consolidation　of　the　nanostructures　that　avoids　grain　growth.　Simultaneously,　phosphorylation　improves　charge　carrier　concentration　and　electron　conductivity　of　the　titanate.　Together　with　the　incorporation　of　hydrophilic　carbon　black,　the　treated　nano-titanate　electrode　reaches　a　bulk-level　compaction　density　of　2.35　g　cm-3.　As　an　anode　for　Li-ion　batteries,　the　densified　electrode　shows　improved　electrochemical　performance　with　a　specific　capacity　of　88.4　mA　h　g-1　at　20　A　g-1.　When　pairing　with　a　high-voltage　LiNi0.5Mn1.5O4　cathode,　the　hybrid　device　demonstrates　an　outstanding　combination　of　energy　and　power　densities.Open　access　publishing　facilitated　by　The　University　of　Queensland,　as　part　of　the　Wiley　-　The　University　of　Queensland　agreement　via　the　Council　of　Australian　University　Librarians.　A　nano-sintering　strategy　is　developed　for　densifying　sodium　titanate　nanostructures　whilst　minimizing　grain　growth.　In　this　process,　the　intake　of　phosphate　group　energetically　drives　the　consolidation　of　nano-titanate　and　modulate　the　electronic　structure　for　improved　conductivity.　Together　with　the　pre-incorporation　of　hydrophilic　carbon,　the　strategy　creates　bulk-density　nanocomposites　for　high-performing　energy　storage　applications.image