CytroCell@PIL: A New Citrus Nanocellulose‐Polymeric Ionic Liquid Composite for Enhanced Anion Exchange Membranes

Enhancement of alkaline water electrolysis requires the development of anion exchange membranes (AEMs) combining high permselectivity with a low resistance to ion transport and stability during prolonged contact with a concentrated alkaline solution. We now report that CytroCell@PIL, a mixedmatrixmembrane obtained by a synergic combination of CytroCellmicronized citrus cellulose mixed at a 1 wt% load with a polymerizable ionic liquid (triethyl(4-vinylbenzyl)phosphonium tetrafluoroborate), shows vastly enhanced chemical and physical stability along with promising ionic conductivity. These findings establish the proof of concept toward the development of technical and economically viable large-area AEMs using polymeric membranes chemically and physically stabilized by CytroCell sustainably sourced via cavitation of industrial citrus processing waste conducted in water only.