STACK-TYPE FLOW ENERGY STORAGE SYSTEM AND METHOD OF CHARGING AND DISCHARGING ENERGY USING THE SAME

摘要

Disclosed herein is stack-type flow energy storage system. More particularly, the system includes a stack-type electrode cell composed of fluidic electrode material mixed with an electrolyte and storage tank for the electrode material, thereby remarkably improving stability, output and energy density. The stack-type flow energy storage system is advantageous in that unit cells, each consisting of a cathode, a separation membrane and an anode, are connected in parallel or in series to each other to make a stack cell, thus remarkably increasing output power. Further, the stack-type flow energy storage system is advantageous in that the sizes of slurry storage tanks connected to an electrode cell are adjusted, thus determining the required specification of energy density.

主权项

1. A stack-type flow energy storage system, comprising:
an electrode cell including a cathode current collector, a cathode, an anode, an anode current collector and a separation membrane for separating the cathode and the anode; first slurry storage tanks for storing slurry for an electrode; and second slurry storage tanks for storing slurry for an electrode, wherein two or more unit cells, each sequentially consisting of the cathode, the separation membrane and the anode, are connected in parallel or in series to each other, and are provided between the cathode current collector and the anode current collector to form a stack cell, each of the cathode and the anode is composed of slurry for an electrode, the slurry being prepared by mixing an electrode material for a super capacitor with an electrolyte, the first slurry storage tanks are respectively connected to the cathode and the anode to store the discharged slurry, and the second slurry storage tanks are respectively connected to the cathode and the anode to store the charged slurry.