Three bipolar plates (BPP) comprised of a composite polypropylene or polyvinylidene fluoride polymer and varying average graphite particle size were studied for application in vanadium redox flow battery (VRFB). The BPPs electrochemically aged via 3000 cyclic voltammetry curves 1.8 M VOSO 4 + 2.0 H 2 SO electrolyte. After every 500th cycle the aging progression was determined by performing on 0...

The transition from fossil to renewable energy sources requires adequate storage technologies due the intermittency of supplied energy. With respect this, organic redox-flow batteries (ORFBs) represent a promising concept for electricity on large scale at economically justifiable costs. However, these can only be operated reliably if parameters representing actual condition medium (i.e., electr...

A highly ion-selective membrane for vanadium redox flow batteries (VRBs) consisting of sulfonated poly(arylene ether ketone) (SPAEK) and polyoxometalate coupled with a graphene oxide was designed and fabricated. The SPAEK/PW-mGO composite membrane showed an effectively low self-discharge rate and excellent Coulombic efficiency (98.73%) in VRBs.

To realize a low-carbon society, the introduction of renewable energies, such as solar or wind power, is increasingly being promoted these days worldwide. A major challenge presented by solar and wind power generators is their fluctuation in output. If they are introduced in large numbers to the power system, problems, such as voltage rises, frequency fluctuations and surplus of the generated p...

The degradation mechanism of hydrocarbon ion exchange membranes under vanadium flow battery (VFB) medium was investigated and clarified for the first time. This work will be highly beneficial for improving the chemical stability of hydrocarbon ion exchange membranes, which is one of the most challenging issues for VFB application.