Abstract: The disclosure relates to the technical field of electrochemical energy storage material preparation, and discloses an asphalt-based hollow activated carbon microsphere and a preparation method thereof, an electrode sheet, and a supercapacitor. The preparation method of the asphalt-based hollow activated carbon microsphere comprises the following steps of: (1) mixing an asphalt of low ash content with a solvent to obtain a mixed asphalt solution; (2) subjecting the mixed asphalt solution to spray pyrolysis in an inert atmosphere to obtain a hollow carbon microsphere; (3) mixing the hollow carbon microsphere with an activating agent, and activating to obtain activated carbon; (4) subjecting the activated carbon to acid pickling and water washing to remove impurities, and drying to obtain the hollow activated carbon microsphere. The method has the features of simple process steps, low preparation cost, being suitable for continuous production and the like.

Abstract: A hygienic assembly and a hygienic robot. The hygienic assembly includes a housing adapted to be connected to a reduction box of a joint of the robot, an opening, and a flange having a first end for connecting to an output member of the reduction box and a second end for connecting to an end effector. The assembly also includes a seal member which includes an outer ring fixed to an inner circumferential surface of the opening and a seal lip slidably contacting an outer circumferential surface of the flange.