The invention discloses an aperture-controllable
porous electrode and a preparation method thereof, and relates to a
porous electrode. The aperture-controllable
porous electrode consists of carbon materials and is a three-dimensional (3D) network framework thin film; the average aperture is concentrated between 0.1 micron and 5 microns; the thickness of the aperture-controllable porous
electrode can be 50 to 0.1mm; and the
porosity of the aperture-controllable porous
electrode is more than 80 percent. The method comprises the following steps of: blending carbon material
powder with an
adhesive and a pore-forming agent; adding a dispersing agent, and stirring to be granular to obtain granular wet
powder; and repeatedly rolling the obtained granular wet
powder into a sheet thin film through a rolling shaft, folding and continuously rolling the sheet thin film until an
electrode thin film is molded, and baking to obtain the aperture-controllable porous electrode. The aperture-controllable porous electrode is simple in preparation process, controllable in electrode aperture, low in cost and
pollution-free, and can be widely applied to a high-charge-
discharge magnification liquid-phase
energy storage battery, a dual-electric-layer super
capacitor, a fuel battery and other battery types containing the porous electrode as an
assembly.