Significant Capacitance Enhancement via In Situ Exfoliation of Quasi-One-Dimensional Graphene Nanostripes in Supercapacitor Electrodes

Graphene has received much attention as a supercapacitor electrode material due to its chemical inertness in preventing reaction with electrolytes and the large surface area two-dimensional nature. However, when graphene sheets are processed into electrodes, they tend stack together form turbostratic graphite reduced relative total of individual sheets. Separately, electrochemical exfoliation is one method producing single-layer graphene, which often used produce for although such exfoliated still leads areas stacking during fabrication. To utilize must be situ within device after graphitic electrodes typically destroyed upon exfoliation, largely loss electrical connectivity among small flakes. Here, we report successful nanostripes, type quasi-one-dimensional nanomaterial length-to-width aspect ratios, anode supercapacitors. We find that over 400% enhancement capacitance result retaining nanostripes addition increasing area, paving ways fully realizing benefit applications.