NOVELTY - An adhesive tape (3) has an adhesive layer containing acrylic polymer as a base polymer in surfaces of base material. The adhesive tape has adhesion strength upon peeling at an angle of 180 degrees which is measured after compressing at a temperature of 40 degrees C or more and less than 150 degrees C, (adhered onto a SUS304BA plate, at peeling temperature of 25 degrees C, and peeling speed of 300 mm/minute) which is two-fold or more than the adhesion strength upon peeling at an angle of 180 degrees which is measured after compressing at 25 degrees C.    USE - Adhesive tape is used for manufacturing electrochemical device (claimed) e.g. lithium-ion battery, fuel cell, solar cell, electrolytic capacitor, and electrical double layer capacitor.    ADVANTAGE - The adhesive tape has excellent adhesiveness, and excellent thermocompression-bonding at normal temperature, even if it disconnects. The adhesiveness of adhesive with respect to cutting blade is prevented. The electrochemical device is manufactured efficiently at normal temperature, without contaminating cutting blade.    DETAILED DESCRIPTION - An adhesive tape has an adhesive layer containing acrylic polymer in surfaces of base material. The adhesive tape has adhesion strength upon peeling at an angle of 180 degrees which is measured after compressing at a temperature of 40 degrees C or more and less than 150 degrees C, (adhered onto a SUS304BA plate, at peeling temperature of 25 degrees C, and peeling speed of 300 mm/minute) which is two-fold or more than the adhesion strength upon peeling at an angle of 180 degrees which is measured after compressing at 25 degrees C (adhered onto a SUS304BA plate, at a peeling temperature of 25 degrees C, and peeling speed of 300 mm/minute). An INDEPENDENT CLAIM is included for manufacture of electrochemical device, which involves coating an active material (5) to an electrical power collector (4), to obtain electrical power collector/active material laminate, bonding the boundary portion of the application portion and a non-application portion in an electrical power collector/active material laminate using adhesive tape, and disconnecting and/or stamping the electrical power collector/active material laminate to which the adhesive tape is bonded.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view explaining the manufacturing method of electrochemical device.    Adhesive tape (3)    Electrical power collector (4)    Active material (5)    Cutting portion (6)    Electrode (7)