Promising aqueous dispersions of carbon black for semisolid flow battery application

In this systematic study, we attempt to thoroughly understand the aggregation mechanism of conductive carbon black in aqueous dispersing medium and optimize formulation suspension electrodes for sodium–ion semisolid flow battery applications. For first time, present branched micelle solution as an electrolyte that introduces widest electrochemical stability window 3.5 V, from –3 + 0.5 V vs. Ag/AgCl, with relatively low viscosity, rendering it promising (anolytes). The simultaneous rheo-electrical measurements revealed ketjenblack (KB) particles was controlled by electrostatic repulsion forces doubly originate inter-aggregate soft interaction bulk interactions. This remarkable rendered dispersions electrically percolated at content (0.9 wt%) importantly able conserve electrical conductivity under extremely high shear rates. Under quiescent conditions, KB dispersion could sustain higher load active material (up 30 wt% Na2Ti3O7 material) without severe influence on rigidity (rheological plateau modulus G0) (?) suspensions. These findings propound further investigation performance these conditions.