Anode Materials for Rechargeable Aqueous Al-Ion Batteries: Progress and Prospects

Rechargeable aqueous Al-ion batteries (AIBs) have attracted more attention as potential energy storage systems due to their low cost, high safety, and environmental friendliness. As a crucial role in AIBs, efforts have been devoted to exploring suitable anode material over the past decade. Herein, the latest advances in using Al3+ intercalation and Al deposition anode materials are critically discussed, including current challenges, reaction mechanisms, and achievable electrochemical properties. This review aims to provide a summary of the strategies proposed to date to overcome the anode issues restricting the present rechargeable aqueous AIBs. Emphasis is placed on alleviating the passivation and corrosion problems of metallic Al anode for realizing rechargeable aqueous AIBs with high energy density. Finally, some suggestions are put forward for the guidance of future research directions on the optimization of anode materials in the expectation of promoting further development of rechargeable aqueous AIBs.

Automated summary

This article discusses the latest advances in anode materials for rechargeable aqueous Al-ion batteries, focusing on Al3+ intercalation and Al deposition materials. It explores the challenges and achievable electrochemical properties, with an emphasis on addressing passivation and corrosion issues to achieve high energy density in rechargeable aqueous Al-ion batteries.