Primus Power

A hybrid redox flow battery. As part of the ARPA-E (DAYS) program, the Primus Power team will work with the Columbia Electrochemical Energy Center to develop a long-duration grid energy storage solution by using a new approach to the zinc bromine battery, a popular chemistry for flow batteries. Taking advantage of the way zinc and bromine behave in the cell, the battery will eliminate the need for a separator to keep the reactants apart when charged, as well as allow all the electrolyte to be stored in a single tank, instead of multiple cells. This reduction in “balance of plant” hardware will reduce system cost.