Layered assembly of graphene oxide and Co-Al layered double hydroxide nanosheets as electrode materials for supercapacitors

摘要

An innovative strategy of fabricating electrode material by layered assembling two kinds of one-atom-thick sheets, carboxy-lated graphene oxide (GO) and Co-Al layered double hydroxide nanosheet (Co-Al LDH-NS) for the application as a pseudo-capacitor is reported. The Co-Al LDH-NS/GO composite exhibits good energy storage properties. To meet the increasing demand for environmental concerns and the energy crisis, energy storage is undoubtedly one of the important issues and has aroused enormous research interest. Supercapacitors (SCs), also called electrochemical capacitors (ECs) are considered as promising candidates for energy storage because of high power performance, low maintenance cost, and long cycle life.