▎ 摘　　要

NOVELTY - Electrochemical nano-pressure cavity comprises a miniature battery system and a control system. The miniature battery system is a chemical energy storage power source, and includes a battery cathode material that can desorb/intercalate cations, and the battery cathode material is provided with a core-shell structure for coating the sample material. The cathode material of the battery is connected to the control system. The control system is used for controlling and detecting the working state of the micro battery system, and for the micro battery system to form a reversible electrochemical reaction and coat all the compression of the sample material. USE - Used as electrochemical nano-pressure cavity. ADVANTAGE - The device: has precise and controllable pressure, simple operation, good repeatability, simple preparation process and low cost, and can be widely used in microscopic high-pressure scientific in-situ or ex-situ experiments of various solid materials and other related experimental studies.