Design And Fabrication Of Flexible Graphene-Based Polymer Energy Conversion Film

A flexible polymer graphene energy conversion film is fabricated and a series of novel graphene-based energy conversion devices including optical-driven graphene polymer flexible bilayer film,optical-driven graphene polymer oscillation machine are designed in this thesis.In the application of electric energy conversion for this graphene polymer oscillation machine is also researched.Firstly,a reduced graphene(RGO)/poly(dimethyl siloxane)(PDMS)flexible bilayer film is fabricated and the thickness is micro-sized.Tightly bonded between RGO and PDMS layer is observed by scanning electron microscope.Then a best structure of this flexible bilayer film is obtained by charactering stress,volume change rate under heating,bending rate and bending angle.A RGO/PDMS flexible bilayer film could be fast driven by near infrared light,visible light,ultraviolet light and natural sunlight is successfully designed.Therefore,a multi-wavelength light drivable bilayer actuator could convert light energy to mechanical energy effectively is achieved.Furthermore,Oscillational motion on the bilayer film is successfully achieved using continuous light irradiation on an offset sandwiched RGO/PDMS bilayer cantilever.The oscillation frequency is 12.5 Hz.Additionally,a flexible permanent magnet conductive graphene composite film which can convert light energy to electrical energy effectively is fabricated by adding permanent magnet particles into RGO/PDMS bilayer.Besides,oscillational motion on the film is also successfully achieved using continuous light irradiation on an offset sandwiched permanent magnet RGO/PDMS bilayer cantilever.Light induced motion on the RGO based film provides a new strategy for absorbing light energy and outputting photomechanical and photoelectric work.