The redox-targeting reactions can disruptively boost the energy density but introduce additional free-energy loss. Here, the Nernstian-potential-driven redoxtargeting reaction considerably eliminates the voltage loss of the system while maintaining a high energy density. Driven by the Nernstian potential difference, the redox molecule, a ferrocene-grafted ionic liquid with standard potential identical to that of LiFePO 4 , reacts with the solid material both anodically and cathodically and exhibits near-unity solid material utilization, 95% voltage efficiency, and energy density.
Developing efficient catalysts for oxygen reduction reaction (ORR) remains an important task for future electrochemical energy applications. Here, we investigate the use of polymer brushes ionic liquid, poly(IL), as an emerging catalyst for ORR. Our results show that the poly(IL) presents a promising electrocatalytic activity which is correlated to the chemical composition and the nanostructuration of the polymer. Furthermore, we demonstrate the use of poly(IL) as a host guest platform for Pt catalyst, providing for the hybrid material a more efficient catalytic activity and tolerance to crossover reaction. In addition, we also reveal the potential use of poly(IL) and the hybrid material, poly(IL)/Pt, as an efficient bifunctional catalyst for ORR and the oxygen evolution reaction (OER).
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