Progress on Transition Metal Ions Dissolution Suppression Strategies in Prussian Blue Analogs for Aqueous Sodium-/Potassium-Ion Batteries

• Published in: Nano-micro letters Vol. 16; no. 1; pp. 128 - 27
• Main Authors: Shu, Wenli, Li, Junxian, Zhang, Guangwan, Meng, Jiashen, Wang, Xuanpeng, Mai, Liqiang
• Format: Journal Article
• Language: English
• Published: Singapore Springer Nature Singapore 01.12.2024; Springer Nature B.V; SpringerOpen
• Subjects: Analogs; Aqueous electrolytes; Aqueous potassium-ion batteries; Aqueous sodium-ion batteries; Composite materials; Dissolution; Energy storage; Engineering; Nanoscale Science and Technology; Nanotechnology; Nanotechnology and Microengineering; Pigments; Potassium; Prussian blue analogs; Rechargeable batteries; Review; Safety; Sodium; Sodium-ion batteries; Special Issue on High-safety Aqueous Batteries; Structural integrity; Suppression strategies; Transition metal ions dissolution; Transition metals; Suppression strategies; Aqueous sodium-ion batteries; Aqueous potassium-ion batteries; Prussian blue analogs; Transition metal ions dissolution
• ISSN: 2311-6706; 2150-5551; 2150-5551
• DOI: 10.1007/s40820-024-01355-y

Highlights Comprehensive insights into Prussian blue analogs for aqueous sodium- and potassium-ion batteries. Unveiling the dissolution mechanism of transition metal ions in Prussian blue analogs. Innovative solutions to suppression transition metal ion dissolution, spanning electrolyte engineering, transition metal doping/substitution, minimize defects, and composite materials. Aqueous sodium-ion batteries (ASIBs) and aqueous potassium-ion batteries (APIBs) present significant potential for large-scale energy storage due to their cost-effectiveness, safety, and environmental compatibility. Nonetheless, the intricate energy storage mechanisms in aqueous electrolytes place stringent requirements on the host materials. Prussian blue analogs (PBAs), with their open three-dimensional framework and facile synthesis, stand out as leading candidates for aqueous energy storage. However, PBAs possess a swift capacity fade and limited cycle longevity, for their structural integrity is compromised by the pronounced dissolution of transition metal (TM) ions in the aqueous milieu. This manuscript provides an exhaustive review of the recent advancements concerning PBAs in ASIBs and APIBs. The dissolution mechanisms of TM ions in PBAs, informed by their structural attributes and redox processes, are thoroughly examined. Moreover, this study delves into innovative design tactics to alleviate the dissolution issue of TM ions. In conclusion, the paper consolidates various strategies for suppressing the dissolution of TM ions in PBAs and posits avenues for prospective exploration of high-safety aqueous sodium-/potassium-ion batteries.