Reducing　overpotential　and　increasing　current　density　remain　a　great　challenge　for　promoting　the　application　of　transition　metals-based　layered　double　hydroxides　(LDHs).　Herein,　Ni　nanoparticles　(similar　to　10　nm)　decorated　NiFe　LDH　ultrathin　(thickness:　similar　to　2　nm)　nanosheets　(Ni　NP/NiFe　LDH)　were　successfully　synthesized　which　exhibited　advanced　electrocatalytic　activity　and　long-term　stability　on　both　oxygen　evolution　reaction　(OER)　and　urea　oxidation　reaction　(UOR).　The　onset　potentials　for　OER　and　UOR　are　1.50　V　and　1.34　V,　respectively,　both　are　lower　than　NiFe　LDH　under　the　same　conditions.　Moreover,　the　peak　current　density　of　UOR　was　300　mA/cm(2),　which　is　much　larger　than　reported　precious-metal　free　UOR　catalysts.　The　excellent　catalytic　performance　of　Ni　NP/NiFe　LDH　composite　for　OER　and　UOR　is　proposed　to　result　from　the　abundant　exposed　active　sites,　small　charge　transfer　resistance,　and　the　synergistic　effects　between　NiFe　LDH　and　anchored　Ni　nanoparticles.　This　work　provides　inspiring　ideas　and　helpful　guidelines　in　design　of　low-cost　but　highly　efficient　electrochemical　catalysts.　(C)　The　Author(s)　2017.　Published　by　ECS.　All　rights　reserved.