Multifunctional Porous Organic Polymer Anode with Desired Redox Potential and Capacity for High-Performance Aqueous Sodium-Ion and Ammonium-Ion Batteries

Aqueous sodium-ion batteries (ASIBs) and aqueous ammonium-ion batteries (AAIBs) attract great attention due to their low cost, safety, and environmental friendliness, but the lack of suitable electrodes with competitive capacity and redox potential limits their practical applications. Herein, we report a porous organic polymer (POP) with multiple redox processes as anodes for ASIBs and AAIBs. This POP displays desired redox potential and shows high reversible capacity of more than 200 mAh g