The development of new graphene capacitors has attracted widespread attention in the field of energy storage. This capacitor utilizes the excellent properties of graphene to successfully prepare an all-solid-state flexible supercapacitor, providing an efficient and safe power solution for wearable devices and other flexible electronic devices.

Graphene has become an ideal material for new energy storage devices due to its excellent optical, electrical, thermal and mechanical properties. However, due to the weak interface between graphene nanosheets and the lack of effective assembly methods, it has been a huge challenge to prepare ultra-thin, transparent, self-supporting graphene films for use in all-solid-state flexible supercapacitors. .

The scientific research team successfully prepared high-strength, self-supporting, ultra-thin and transparent graphene films by using macro-scale nano-assembly and other technologies. This film not only has excellent mechanical and optical properties, but also has a lateral size of up to centimeters, can be cut and has good stretchability. Experimental results show that the all-solid-state flexible supercapacitor assembled from this new film has a high volume capacitance value and good electromechanical stability, demonstrating excellent supercapacitor performance.

In addition, other research teams have developed flexible solid-state supercapacitors with a wide voltage window by regulating the microstructure of electrodes and introducing ionic liquid gel electrolytes, effectively increasing the energy density of the device. This capacitor uses multi-level shungite composite electrodes and ionic liquid gel polymer electrolytes to achieve high energy density and excellent cycle stability.

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