Metal　organic　frameworks　(MOFs)　have　been　considered　as　one　of　the　most　promising　electrode　materials　for　electrochemical　capacitors　due　to　their　large　specific　surface　area　and　abundant　pore　structure.　Herein,　we　report　a　Co-MOF　electrode　with　a　vertical-standing　2D　parallelogram-like　nanoarray　structure　on　a　Ni　foam　substrate　via　a　one-step　solvothermal　method.　The　as-prepared　Co-MOF　on　a　Ni　foam　electrode　delivered　a　high　area-specific　capacitance　of　582.0　mC　cm(-2)　at　a　current　density　of　2　mA　cm(-2)　and　a　good　performance　rate　of　350.0　mC　cm(-2)　at　50　mA　cm(-2).　Moreover,　an　asymmetric　electrochemical　capacitor　(AEC)　device　(Co-MOF　on　Ni　foam//AC)　was　assembled　by　using　the　as-prepared　Co-MOF　on　a　Ni　foam　as　the　cathode　and　a　active　carbon-coated　Ni　foam　as　the　anode　to　achieve　a　maximum　energy　density　of　0.082　mW　cm(-2)　at　a　power　density　of　0.8　mW　cm(-2),　which　still　maintained　0.065　mW　cm(-2)　at　a　high　power　density　of　11.94　mW　cm(-2).　Meanwhile,　our　assembled　device　exhibited　an　excellent　cycling　stability　with　a　capacitance　retention　of　nearly　100%　after　1000　cycles.　Therefore,　this　work　provides　a　simple　method　to　prepare　MOF-based　material　for　the　application　of　energy　storage　and　conversion.