Department of Energy and Power Engineering, School of Energy and Environment, Anhui University of Technology, Ma'anshan, Anhui, 243002, China.
School of Physics, Harbin Institute of Technology, No. 92 Xidazhi Street, Harbin, Heilongjiang, 150001, China.
Adv Sci (Weinh). 2023 May;10(15):e2207426. doi: 10.1002/advs.202207426. Epub 2023 Mar 22.
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.
阴离子嵌入到具有成本效益的石墨电极中提供了高的工作电压，因此，最近作为新型储能装置的双离子电池（DIBs）引起了广泛关注。“石墨中的石墨烯”一直存在于 DIBs 的石墨阴极中，但很少被研究。可以预见，具有完整晶格结构的壳层中的石墨烯泡囊可以利用其超高弹性刚度和可逆晶格膨胀来增加电池中阴离子的存储容量。本综述通过引入石墨烯泡囊的高弹性及其可能的形成机制，提出了一个预期的“泡囊模型”。由多层石墨烯组成的独特泡囊不会从石墨表面脱落，这可能成为未来 DIBs 阴极材料纳米技术中不可或缺的一部分。
