We　prepared　a　novel　composite　material　CoFe2O4　@MnO2　by　dealloying　Al91Co3Fe6　ribbons　followed　by　a　calcination　step　and　a　hydrothermal　reaction.　X-ray　diffraction　(XRD),　X-ray　photoelectron　spectroscopy　(XPS),　scanning　electron　microscopy　(SEM),　and　transmission　electron　microscopy　(TEM)　were　used　to　analyze　the　phase　constitutions,　microstructures,　and　morphology.　Results　show　that　thin-walled　honeycombed　MnO2　growth　on　mesoporous　CoFe2O4　nanosheets　is　the　key　to　synthetize　CoFe2O4　@MnO2.　A　three-electrode　system　was　used　for　the　electrochemical　sensing　of　glucose.　The　sensitivity　of　the　composite　material　when　used　as　glucose　detection　electrode　was　of　1362.83　μA·mM−1·cm−2,　significantly　higher　than　that　of　CoFe2O4　(590.37　μA·mM−1·cm−2)　and　MnO2　(248.95　μA·mM−1·cm−2).　Additionally,　CoFe2O4　@MnO2　exhibits　remarkable　long-term　stability　and　an　impressive　low　detection　limit　of　1.32　μM.　Our　results　conclude　that　its　larger　specific　area　and　high　abundance　of　charge　transport　channels　contribute　to　its　excellent　properties.　Additionally,　the　presence　of　a　large　number　of　metallic-oxygen　bonds　significantly　improves　its　electro-catalytic　properties　for　the　detection　of　glucose.　©　2022　Elsevier　B.V.