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On April 12, Hefei University of Technology announced that the university's research team successfully prepared a graphene film and successfully assembled it into an all-solid-state flexible supercapacitor
.
This flexible supercapacitor can provide efficient and safe power for wearable devices and is a key device
for the new generation of flexible electronic devices.
The relevant results were published in
the internationally renowned academic journal "Chemistry" on the 12th.
According to reports, graphene has become an ideal material
for new energy storage devices due to its excellent optical, electrical, thermal, mechanical and other properties.
However, due to the weak interface between graphene nanosheets and the lack of effective assembly methods, the development of ultra-thin, transparent and self-supporting graphene films for use as all-solid-state flexible supercapacitors still faces great challenges
.
The scientific research team of Hefei University of Technology and its collaborators successfully prepared a high-strength, self-supporting, ultra-thin and transparent graphene film
by using macro-scale nano-assembly and other technologies.
The film consists of only two layers of graphene oxide monolayer film, the thickness is only 22 nanometers, can be self-supporting without auxiliary materials, and can be controlled adjustment of thickness and performance by increasing or decreasing the number of monolayer layers
.
At the same time, the film has a lateral dimension of centimeters, which is cuttable and has excellent stretchability
.
The experimental results show that the new film can not only maintain excellent mechanical and optical properties, but also the all-solid-state flexible supercapacitor assembled by it has a high volumetric capacitance value and good electromechanical stability, showing excellent supercapacitor performance
.
After 7500 cycles of charge and discharge, the film capacitance value is retained up to 91.
4%.
On April 12, Hefei University of Technology announced that the university's research team successfully prepared a graphene film and successfully assembled it into an all-solid-state flexible supercapacitor
.
This flexible supercapacitor can provide efficient and safe power for wearable devices and is a key device
for the new generation of flexible electronic devices.
The relevant results were published in
the internationally renowned academic journal "Chemistry" on the 12th.
According to reports, graphene has become an ideal material
for new energy storage devices due to its excellent optical, electrical, thermal, mechanical and other properties.
However, due to the weak interface between graphene nanosheets and the lack of effective assembly methods, the development of ultra-thin, transparent and self-supporting graphene films for use as all-solid-state flexible supercapacitors still faces great challenges
.
The scientific research team of Hefei University of Technology and its collaborators successfully prepared a high-strength, self-supporting, ultra-thin and transparent graphene film
by using macro-scale nano-assembly and other technologies.
The film consists of only two layers of graphene oxide monolayer film, the thickness is only 22 nanometers, can be self-supporting without auxiliary materials, and can be controlled adjustment of thickness and performance by increasing or decreasing the number of monolayer layers
.
At the same time, the film has a lateral dimension of centimeters, which is cuttable and has excellent stretchability
.
The experimental results show that the new film can not only maintain excellent mechanical and optical properties, but also the all-solid-state flexible supercapacitor assembled by it has a high volumetric capacitance value and good electromechanical stability, showing excellent supercapacitor performance
.
After 7500 cycles of charge and discharge, the film capacitance value is retained up to 91.
4%.
