Graphene Nano‐Blister in Graphite for Future Cathode in Dual‐Ion Batteries: Fundamentals, Advances, and Prospects

• Published in: Advanced science Vol. 10; no. 15; pp. e2207426 - n/a
• Main Authors: He, Yitao, Dong, Yujie, Zhang, Yaohui, Li, Yongtao, Li, Haijin
• Format: Journal Article
• Language: English
• Published: Germany John Wiley & Sons, Inc 01.05.2023; John Wiley and Sons Inc; Wiley
• Subjects: Carbon; dual‐ion batteries; Electrodes; Electrolytes; Energy storage; Graphene; graphene blisters; graphene in graphite; Graphite; graphite cathodes; Oxidation; Physical properties; Review; Reviews; Solvents; graphite cathodes; graphene in graphite; graphene blisters; dual-ion batteries
• ISSN: 2198-3844; 2198-3844
• DOI: 10.1002/advs.202207426

The intercalating of anions into cost‐effective graphite electrode provides a high operating voltage, therefore, the dual‐ion batteries (DIBs) as novel energy storage device has attracted much attention recently. The “graphene in graphite” has always existed in the graphite cathode of DIBs, but has rarely been researched. It is foreseeable that the graphene blisters with the intact lattice structure in the shell can utilize its ultra‐high elastic stiffness and reversible lattice expansion for increasing the storage capacity of anions in the batteries. This review proposes an expected “blister model” by introducing the high elasticity of graphene blisters and its possible formation mechanism. The unique blisters composed of multilayer graphene that do not fall off on the graphite surface may become indispensable in nanotechnology in the future development of cathode materials for DIBs. The intercalation of solvated anions enables a few graphitic layers to separate from the bulk graphite and form a nano‐blister. The number of graphite layers in the blister shell is often less than 10, and the physical properties of blister shell similar to those of graphene make it different from bulk graphite, so it can be referred as “graphene blister”.