Issue 3, 2022

Cation-intercalation and conversion-type cathode materials for rechargeable aluminum batteries

Abstract

The current research on cation-intercalation and conversion-type cathode materials for rechargeable aluminum batteries (RABs) is discussed in this critical review. The experimental evidence for Al3+ intercalation in transition metal oxides, chalcogenides, MXene, and Prussian blue analogues in both chloroaluminate ionic liquids and aqueous electrolytes is analyzed to identify the true reaction mechanisms. Chevrel phase molybdenum sulfide (Mo6S8) is the only proven intercalation material for RABs with unambiguous evidence, different understandings of the Al3+ intercalation mechanism in Mo6S8 are discussed. For conversion-type cathode materials, the discussion is focused on the conversion mechanism of metal chalcogenides, and the unique reversible oxidation mechanism of sulfur and selenium enabled by the chloroaluminate ionic liquid electrolytes. The reaction mechanisms of organic cathode materials are also discussed.

Graphical abstract: Cation-intercalation and conversion-type cathode materials for rechargeable aluminum batteries

Article information

Article type
Review Article
Submitted
15 set 2021
Accepted
03 dez 2021
First published
07 dez 2021

Mater. Chem. Front., 2022,6, 280-296

Author version available

Cation-intercalation and conversion-type cathode materials for rechargeable aluminum batteries

T. Liu, G. Lv, M. Liu, C. Zhao, L. Liao, H. Liu, J. Shi, J. Zhang and J. Guo, Mater. Chem. Front., 2022, 6, 280 DOI: 10.1039/D1QM01267C

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