▎ 摘　　要

NOVELTY - The structure has a first reduced graphene oxide layer containing an electrochemically active material layer and a second reduced graphene oxide layer that are sequentially arranged. The first reduced graphene oxide layer or the second reduced graphene oxide layer is formed by stacking multiple single-layered reduced graphene oxide layers. USE - Multilayer structure for electrode and electrochemical energy storage device (claimed). ADVANTAGE - The electrochemical energy storage device shows better cycling performance and rate performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) an electrochemical energy storage device; and (2) a method for preparing a multilayer structure. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the multilayer structure.