N, S-Doped Graphene Quantum Dots for Affordable and High-Performance Aqueous Zinc-Ion Battery

The exorbitant costs linked to cutting-edge energy storage technologies, exemplified by lithium-ion batteries, present formidable obstacles to the widespread adoption and maintenance of new energy vehicles. As a result, there is an urgent call to expedite the development of the next generation of energy storage technology—one marked by both low cost and high performance. Aqueous zinc-ion batteries (AZIBs) have emerged as promising candidates, offering an enticing blend of affordability and superior performance, positioning them as pivotal contenders for next-generation energy storage solutions. Nevertheless, the practical application of AZIBs faces significant challenges due to spontaneous surface corrosion and uncontrolled dendrite growth.<br/>In pursuing a pragmatic solution while upholding cost efficiency, we propose a design strategy that involves N, S-doped graphene quantum dots (GQDs) derived from lemons and kitchen soda sources. This innovative approach aims to fabricate high-performance AZIBs. The introduction of GQDs serves a dual purpose: 1. it promotes the uniform distribution of zinc flux across the anode surface. 2. it mitigates the side reaction between the Zn anode and electrolyte. This optimization technique has the potential to substantially enhance the appeal and cost-effectiveness of the new high-performance battery energy storage technology.<br/>Keywords: energy storage, nanomaterials, GQDs, aqueous Zn ion batteries