Department of Chemical Engineering and Materials Science and Composite Materials and Structures Center, Michigan State University, East Lansing, Michigan 48824-1226, USA.
ACS Appl Mater Interfaces. 2010 Aug;2(8):2293-300. doi: 10.1021/am100343a.
The diverse physical and chemical aspects of graphene nanosheets such as particle size surface area and edge chemistry were combined to fabricate a new supercapacitor electrode architecture consisting of a highly aligned network of large-sized nanosheets as a series of current collectors within a multilayer configuration of bulk electrode. Capillary driven self-assembly of monolayers of graphene nanosheets was employed to create a flexible, multilayer, free-standing film of highly hydrophobic nanosheets over large macroscopic areas. This nanoarchitecture exhibits a high-frequency capacitative response and a nearly rectangular cyclic voltammogram at 1000 mV/s scanning rate and possesses a rapid current response, small equivalent series resistance (ESR), and fast ionic diffusion for high-power electrical double-layer capacitor (EDLC) application.
石墨烯纳米片的各种物理和化学特性，如粒径、表面积和边缘化学性质，被结合在一起，制造了一种新的超级电容器电极结构，该结构由高度取向的大尺寸纳米片网络组成，作为多层块状电极内的一系列集流器。采用单层石墨烯纳米片的毛细驱动自组装来制备高度疏水的纳米片的灵活、多层、独立式薄膜，该薄膜覆盖在大的宏观面积上。这种纳米结构在 1000 mV/s 的扫描速率下表现出高频电容响应和近乎矩形的循环伏安图，并且具有快速的电流响应、小的等效串联电阻 (ESR) 和快速的离子扩散，适用于高功率双电层电容器 (EDLC) 应用。
