Project Innovation + Advantages:
The Vanderbilt University team will develop a new bipolar membrane featuring a three-dimensional water splitting or water formation junction region, prepared by an electrospinning process. The team’s membrane will allow for higher current density operation as compared to conventional BPMs while maintining a low operating voltage, long-term durability, and high separation efficiency. These membranes will be useful in electrodialysis, electrolysis, and fuel cell applications.
Based on preliminary experiments, it is possible to operate a 3D junction BPM at current densities more than one order of magnitude greater than those achievable with the best commercially available films, with no sign of membrane degradation. Stack size is reduced accordingly.