The invention discloses a thick
electrode with excellent electrochemical performance. An
electrode thickness of the thick
electrode is larger than 300mu m. The thick electrode comprises an
anode thick electrode body and a
cathode thick electrode body, wherein the
anode thick electrode body comprises an
anode current collector, an anode active material, an anode binder, a
porous carbon conductive agent and a
fluorocarbon surfactant; the
cathode thick electrode body comprises a
cathode current collector, a cathode active material, a cathode binder, a
porous carbon conductive agent and a thickener; the
porous carbon conductive agent has rich porous channels, can obviously absorb and keep
electrolyte and solves the problems that thick electrode
electrolyte has poor wettability, active material utilization is insufficient, and the like; the
fluorocarbon surfactant can reduce
surface tension of anode
slurry, improve a
coating effect of the
slurry on the current collectors and meanwhile improve absorbing and keeping ability of an anode piece to the
electrolyte. By means of the technical characteristics, the anode thick electrode body and the cathode thick electrode body with excellent conducting performance can be prepared out, so that a
high energy density
lithium ion battery with excellent electrochemical performance can be obtained.