Properties And Preparation Of Biocompatible Triboelectric Nanogenerator

Nano-generators as a new type of green energy has great potential for development,its self-driven advantages not only can promote the development of implantable medicine,but also can be applied to wind power.For the application of implanted medical devices,sustainable energy supply is crucial to avoid the traditional battery that need second surgery.The development of the biocompatible triboelectric nanogenerators(BCTENGs)provides a new approach to supply green energy.In recent years,BCTENG has got a good output performance by selecting the biocompatible plate material and changing the surface roughness of friction materials.It is an urgent problem to be solved that how to further optimize the material and structure of NG to improve its electrical output characteristics and increase the application value.In this paper,the BCTENG’s surfaces of both 317 L SS and EC were designed using lithography technology and inductively couple plasma(ICP)etching,respectively.The degradation rate of the generator plate is controlled and the toughness of generator plate is improved through the study of the composite thin film.Some simple and cheap methods are presented to process microstructure of the friction layer,such as Laser etching and Heat dissolution.A wind-borne TENG with ethyl cellulose(EC)and polyethylene(PE)as friction materials is prepared to solve current environmental problems and the application of generators.The results are as follows:1.With the increase of designed pattern’s density on the surface of 317 L SS by using designed lithography mask and EC by increasing the ICP etching power,the power output(245 V,50 μA)of TENG was greatly increased.The experimental group developed a dynamic friction factor test device independently.The experiment of the TENG in Simulate body fluids reveals that the performance of BCTENG is stable and the ion solution can improve the efficiency(short-circuit current is 145 μA)of BCTENG.The experimental group developed a dynamic friction factor test device independently.2.In order to obtain a ethyl cellulose/polylactic acid composite film with slower degradation rate、good tensile strength and high output,the optimal ratio of Wt(PLA)is 35%.The microfabrication of the surface of the composite film can be obtained by hot pressing method.Surface of stainless steel can produce about 10μm convex and nano-level of the phenomenon of hair by using laser etching.The two methods above have a simple and efficient advantage.3.Ethylcellulose(EC)and polyethylene(PE)as two plates of wind power TENG has great output(200 V,65 μA)can make 50 light-emitting diodes light.EC-PE TENG can be used in daytime running lights as a cheap green self-driven system.