Composite electrodes embed the carbon felt electrode into conductive plastic bipolar plate by special process, can greatly improve electrical conductivity and battery efficiency.

The bipolar plate for Zn-Br flow battery is a kind of carbon plastic electrode, it’s a carbon-based electrically conductive composite material that uses polyethylene as adhesive. The service life of Zinc Bromine batteries mainly influenced by deterioration of Carbon-plastic composite electrodes. Therefore, technical indexes are critical to ensure optimum performance of batteries.

Proton-exchange membrane is also known as Ion-exchange membrane, is one of the key components in vanadium redox flow battery(VRFB) system. Poly(vinylidene fluoride) is used as the based material for proton conducting membrane, which offers stable chemical properties including good acid resistance and oxidation resistance.

The bipolar membrane is a kind of ion exchange membrane composed of positive and negative membranes. Both anions and cations cannot penetrate the membrane, and dissociate water into H+ and OH− ions, which migrate from the cation exchange layer and anion exchange layer respectively under the action of a positive DC electric field.

Graphite soft felt for flow battery is a type of PAN-based battery felt with specialized fibers and weave which are suitable for liquid wetting and absorption. Carbon felt has properties of less chemically reactive and high conductivity.