Cation-intercalation and conversion-type cathode materials for rechargeable aluminum batteries. (5th January 2022)

• Record Type: Journal Article
• Authors: Liu, Tianming; Lv, Guocheng; Liu, Meng; Zhao, Changchun; Liao, Libing; Liu, Hao; Shi, Jiayan; Zhang, Jian; Guo, Juchen
• Is Part Of: Materials chemistry frontiers. Volume 6:Number 3(2022)
• Page Start: 280
• Page End: 296
• Publication Date: 2022-01-05
• Subjects: Materials science -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1039/d1qm01267c
• Languages: English
• ISSNs: 2052-1529

Abstract

Abstract : This review provides an overview of the research on cation-intercalation and conversion-type cathodes for rechargeable Al batteries. The mechanisms behind the experimental observations are discussed to highlight the complexity of Al electrochemistry. 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 Al 3+ 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 (Mo6 S8 ) is the only proven intercalation material for RABs with unambiguous evidence, different understandings of the Al 3+ intercalation mechanism in Mo6 S8 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.