Aluminum ion battery Electrolyte Cathode materials

What is it about?

Aluminum-ion batteries (AIBs) with Al metal anode are attracting increasing research interest on account of their high safety, low cost, large volumetric energy density (≈8046 mA h cm−3), and environmental friendliness. Specifically, the reversible Al electrostripping/deposition is achieved with the rapid development of room temperature ionic liquids, and rapid progress has been made in fabricating high-performance and durable AIBs during the past decade. This review provides an integrated comprehension of the evolution of AIBs and highlights the development of various non-aqueous and aqueous electrolytes including high-temperature molten salts, room temperature ionic liquids, and gel–polymer electrolytes. The critical issues on the interplay of electrolytes are outlined in terms of the voltage window span, the effective ion species during charge storage (Al3+ or AlxCly ) and their underlying charge transfer (e.g., interfacial transfer and diffusion), and the solid electrolyte interface formation and its role. Following the critical insight, future perspectives on how to practically design feasible AIBs are given.

Featured Image

Photo by Robin Glauser on Unsplash

Photo by Robin Glauser on Unsplash

Why is it important?

The aluminum-ion battery has a high energy density and high power density, which means that it can store more energy in a smaller size and weight, and it can be released quickly.

Perspectives