Nafion/SiO2 hybrid membrane for vanadium redox flow battery

Ion exchange membranes for vanadium redox flow battery (VRB) applications

“…[9][10][11][12][13][14][15][16][17][18][19] The properties of the IEM greatly affect the resulting performance of the VRB. The membranes traditionally used in VRB are perfluorosulfonic acid polymers such as Dupont's NafionÒ.…”

“…With typically simple handling procedures, 14 Qiu's group successfully prepared Nafion/SiO 2 hybrid membranes by using the sol-gel method. The membranes were investigated in VRBs as well, where the results showed that the incorporation of SiO 2 into Nafion can effectively reduce the crossover of vanadium, because the polar clusters (pores) of the original Nafion, were filled with SiO 2 nanoparticles during the in situ sol-gel reaction of tetraethylorthosilicate (TEOS).…”

Advanced nanocomposite membranes for fuel cell applications: a comprehensive review

“…The water uptake of the membranes is defined as mass ratio of the absorbed water to that of the dry membrane (Xi et al, 2007). Before measurements, membrane samples are dried at 80 ºC for 12 h, weighed, and are then soaked in DI water at room temperature for 24 h. The samples whose surface water is fully hydrated are blotted by tissue papers and weighted immediately.…”

Carbon Nanotube-Polymer Composites for Energy Storage Applications

“…To reduce the migration of V ions, many approaches such as doping of inorganic materials, surface modification, and layering have been employed to modify the Nafion membranes. Although some important progress proceeds with lower vanadium species in modified Nafion than the pristine one, the cost is still far from afforded that limits the commercialization [12,13]. It is therefore of equivalent significance to reduce the cost.…”