A redox flow type battery

摘要

The present invention relates to a liquid-circulating type redox flow battery which comprises (a) said battery being defined by a ratio (H/L) where (H) is the average height of each of said porous electrodes in a flow direction of each of said electrolytic solutions, and (L) is the length of each of said porous electrodes in a direction perpendicular to the flow direction of each of said electrolytic solutions, the ratio (H/L) being in the range of 0.18 to 1.95; and (b) said battery being defined by ratios ( SIGMA sai/Sa) and ( SIGMA sci/Sc) where ( SIGMA sai) is the sum of the cross-sectional area of an inlet for introducing said positive electrolytic solution into said positive cell, ( SIGMA sci) is the sum of the cross-sectional area of an inlet for introducing said negative electrolytic solution into said negative cell, (Sa) is the average of the cross-sectional area of said porous electrode in a direction perpendicular to the flow direction of said positive electrolytic solution, and (Sc) is the average of the cross-sectional area of said porous electrode in a direction perpendicular to the flow direction of said negative electrolytic solution, each of the ratios ( SIGMA sai/Sa) and ( SIGMA sci/Sc) being in the range of 0.001 to 0.04, and said battery being further defined by ratios ( SIGMA sao/Sa) and ( SIGMA sco/Sc) where ( SIGMA sao) is the sum of the cross-sectional area of an outlet for discharging said positive electrolytic solution out of said positive cell, ( SIGMA sco) is the sum of the cross-sectional area of an outlet for discharging said negative electrolytic solution out of said negative cell, and (Sa) and (Sc) are as denoted above, each of the ratios ( SIGMA sao/Sa) and ( SIGMA sco/Sc) being in the range of 0.001 to 0.04.