Highly　active,　stable,　economic　friendly　electrocatalysts　play　a　crucial　role　for　the　commercialization　of　direct　methanol　fuel　cells　(DMFCs).　One　kind　of　flower-like　PtNi　bimetallic　particle　anchored　on　TiO2　na-notube　arrays　(PtNi/TNTs/Ti)　had　been　synthesized　by　one-step　electrochemical　synthesis　as　anode　catalysts　for　methanol　oxidation　reaction　(MOR)　in　this　study.　The　PtNi/TNTs/Ti　electrode　demonstrated　high　elec-trocatalytic　activity　and　durability　significantly　for　MOR.　In　addition,　PtNi100/TNTs/Ti　possessed　a　mass　activity　of　409.8　mA/mgpt,　which　was　four　times　greater　than　that　of　Pt100/TNTs/Ti　electrodes.　According　to　further　structure　analysis,　the　improvement　in　catalytic　activity　was　attributed　to　lattice　compression　when　Ni　atoms　entered　the　Pt　lattice　accompanied　by　a　1.02　eV　positive　shift　in　Pt　4　f7/2　binding　energy,　and　density　functional　theory　(DFT)　calculations　indicated　that　the　remarkably　enhanced　catalytic　performance　on　PtNi　through　lattice　compression　arising　from　the　enhanced　OH　adsorption.　It　appears　promising　that　this　simple　method　could　be　adopted　to　prepare　an　integrated　electrode　used　as　energy　and　environmental　applications.　(c)　2023　Published　by　Elsevier　B.V.