Exploring　highly　efficient,　CO-tolerant　and　stability　catalyst,　such　as　Pt-based　bimetallic　catalyst　for　methanol　oxidation　reaction　(MOR)　is　pressingly　demanded　towards　commercialization　of　direct　methanol　fuel　cells　(DMFCs).　Herein,　the　PtCo　nanoparticles　are　encapsulated　in　bamboo-like　highly　ordered　TiO2　nanotubes　(PtCo/TNTs/Ti)　by　a　facile　electrochemical　method.　The　obtained　PtCo/TNTs/Ti　electrode　exhibits　a　large　electrochemical　active　area　of　1220.4　cm2/mgpt.　Its　mass　activity　reaches　to　1148　mA/mgPt,　which　is　3.6　times　and　7.5　times　than　that　of　Pt/TNTs/Ti　and　PtC,　respectively.　The　lattice　spacing　of　(111)　and　(200)　faces　are　respectively　reduced　by　3.5%　and　7.1%,　caused　by　Co　incorporated　into　Pt　lattice.　The　lattice　strain　is　an　important　reason　for　improving　catalytic　performance.　In　addition,　an　insight　into　growth　mechanism　is　proposed　according　to　the　first-principle　calculations.　Co　atoms　that　alloyed　with　Pt　on　the　surface　provide　active　sites　for　the　following　reduction　of　Pt,　promoting　the　deposition　efficiency.　The　obtained　PtCo/TNTs/Ti　is　expected　as　the　candidate　electrode　to　output　high　power　density　in　DMFCs.　©　2023