Yinglin Yan

Abstract Aqueous batteries offer inherent safety and low cost, but the inherently fixed physicochemical functionality and poor interfacial compatibility of existing binders limit their ability to boost positive electrode performance. Here we present a hydroxyl-chemistry regulation strategy that transforms cellulose, an abundant biopolymer on Earth, into a high-affinity, interfacially compatible binder that stabilizes high-capacity, shuttling-prone positive electrodes.

The swift advancement in portable electronics, electric vehicles, and renewable energy storage has spurred an insatiable need for high-energy–density lithium-ion batteries (LIBs) that can operate across a broad temperature spectrum, including high temperatures [1]. However, the challenge lies in enhancing the energy density while maintaining the safety of conventional LIBs, which typically employ graphite-based anodes and organic liquid electrolytes [2].