So more like a new kind of capacitor? Be very cool to just have a nice big fat cap for the burst power even if you still got most of your power from more traditional type batteries. The no sag setup. Could be really good for cars or other heavier ev's.
"Electrical energy storage and management is an urgent issue due to climate change and energy shortage. Dielectric and double-layer capacitors are the two basic energy-storage devices currently available. However, the application of the dielectric capacitor is very limited due to its low capacitance, while the double-layer capacitor suffers from difficult scaling-up and high fabrication cost, even though its capacitance is high. In this work, we present the first energy-storage membrane which stores charge when simply sandwiched between two metal plates. With an ionic conductivity of 2.8 × 10−4 S cm−1, the membrane is highly polarizable, and its energy-storage mechanism is based on the condensation–decondensation of mobile cations in the membrane negative matrix. The capacitance of a 1.0 cm2 area membrane is 0.2 F cm−2, and it can be readily scaled up simply by using larger membrane pieces. In view of its extreme simplicity, excellent scalability and practical viability, the novel game-changing membrane reported here may provide a sustainable solution to energy storage."
Graphical abstract: Polarizable energy-storage membrane based on ionic condensation and decondensation
