TITANstack™ For Grid-Scale Storage

The scaling up of stack size in a vanadium flow batteries is impaired by a chemical phenomenon called “overcharging” that reduces the electrical performance of the electrolyte as the active area of the stack increases.

​

A fluid dynamic constraint kicks in when feeding the electrolyte through stacks with a large active surface. This limits the size of vanadium flow battery stacks, and therefore their power rating.

​

For large grid-scale batteries, manufacturers are forced to utilize a number of smaller stacks connected together as “power building blocks.” The multiplication of stacks adds to the complexity, size, and cost of grid-scale flow batteries.

StorEn Technologies’ patented fluid dynamic Multigrids™ system eliminates “overcharging”, the major technical obstacles in scaling up the stack size of flow batteries. StorEn’s Multigrids™ will enable the construction of large TITANstack™ stacks featuring a current running with thousands of amps (for grid-scale vanadium flow batteries). This innovation leads simplification of the system’s complexity and allows for a significant cost reduction.