Electrode　interfacial　degradations　are　the　key　challenges　for　high-performance　rechargeable　batteries,　usually　mitigated　through　surface　modification/coating　strategies.　Herein,　we　report　a　novel　mechanism　to　enhance　the　surface　stability　of　P2　layered　cathodes　by　introducing　a　high　density　of　dopant-enriched　precipitates.　Based　on　microscopic　analysis,　we　show　that　forming　a　high　density　of　precipitates　at　the　grain　surface　can　effectively　suppress　surface　cracking　and　corrosion,　which　not　only　improves　the　surface/interface　stability　but　also　effectively　suppresses　the　intergranular　cracking　issue.　Increasing　the　doping　level　can　lead　to　a　greater　density　of　precipitates　at　the　surface　region,　which　results　in　higher　surface　stability　and　increased　cycling　stability　of　the　P2　layered　cathode　for　a　sodium-ion　battery.　We　further　reveal　that　prolonged　cycling　can　induce　the　formation　of　a　precipitate-free　surface　region　due　to　the　loss　of　Zn　dopant　and　Na.　Our　in-depth　microanalysis　reveals　cycling-induced　dynamic　structural　evolution　of　the　P2　layered　cathodes,　highlighting　that　dopant　segregation-induced　precipitation　is　a　new　approach　to　achieving　high　interfacial　stability.　©　2022　The　Authors