Recently, the team of Wu Zhongshuai, a researcher of the 2D Materials and Energy Devices Research Group, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and the team of Fu Qiang, a researcher of the Nano and Interface Catalysis Research Group, have developed a new method for device assembly, which wraps planar patterned microelectrodes In the chemically cross-linked graphene oxide-polyvinyl alcohol-based hydrogel electrolyte, a new concept micro supercapacitor without substrate and shape was successfully constructed. Miniature supercapacitor is a very important high-power miniature energy storage device, but due to various factors such as the introduction of substrate, poor compatibility between electrode / electrolyte and substrate, complicated packaging process, etc., the device has a single fixed shape and mechanical flexibility Poor, low energy density, it is difficult to meet the application scenarios of specific microsystems that require high space and flexibility. Recently, researchers at the Dalian Institute of Chemical Research have developed a new method of device assembly with “microelectrodes integrated into the gel electrolyte to prepare an integrated filmâ€, which wraps two-dimensional materials (such as MXene, graphene) based on planar patterned microelectrodes in In the graphene oxide-containing chemically cross-linked polyvinyl alcohol-based hydrogel electrolyte film, a micro-capacitor with no substrate and no fixed shape based on the new concept of "microelectrode-electrolyte integrated film" was successfully constructed. The device has ultra-thin device thickness (37 μm), ultra-flexibility, high area capacity (40.8 mF / cm2) and high integration. Especially in various deformation states such as bending, folding, twisting, and wrinkling, the micro supercapacitor still maintains the original high electrochemical performance. For example, with 9 highly-integrated graphene-based micro-supercapacitor modules in series, under the condition of severe distortion (the entire device volume is rolled from 0.11 cm3 to 0.01 cm3), the entire module still has excellent electrochemical consistency at It can still work stably under the voltage of V. This work provides a universal method and new design strategy for the development of new micro-energy storage devices with no substrate and no fixed shape. Related achievements were published in "Advance Funct. Mater." The above work was supported by the National Natural Science Foundation of China, the National Key Research and Development Program, the Dalian Institute of Chemical Research and Innovation Fund, and the CAS-TWAS Dean Scholarship. Computer Control Torsion Testing Machine Spring Testing Machine,Torsion Test Equipment,Torsion Spring Tester,Computer Control Torsion Testing Machine Jinan Chenda Testing Machine Manufacturing Co., Ltd. , https://www.jncdtester.com