How does a Z Cell work?

ZCell is a flow battery, a new type of energy storage

system without the overhead or degradation problems

that can impact the performance of legacy battery types

such as lithium-based or lead acid.

ZCell contains about 100 litres of a water-based zinc

bromide salt solution circulating in two separate hydraulic

circuits. In short, energy is stored by moving zinc around

inside the battery. When charging, zinc is extracted

from the zinc bromide solution and stored on a plastic

membrane. During discharge, zinc is released back to the

solution. With ZCell, there is no degradation to the battery

when the zinc is removed from the plastic membrane

at the end of each cycle, giving it a sustained, long-life

energy storage capacity.