Study On The Preparation And Performance Of Innovative Triboelectric Nanogenerator

Since 2006,following the development of various nanogenerators by Z.L.Wang’ group and colleagues,attention is gradually being caught to the micro energy that is available in the surrounding environment.This represents an abundant source of micro-power to meet the growing demands for mobile energy sources.Among these nanogenerators,the triboelectric nanogenerator(TENG)has attracted a great deal of attention because of its high output and high energy-conversion efficiency.The working mechanism of TENG is based on the ingenious coupling of two very common effects of triboelectrification and electrostatic induction.Controlling the material surface structure,chemical modification or increasing the number of friction layers mechanically have been tried to enhance this output performance.However,those methods have been limiting its applications in minimization fields,which required a larger volume to fabricate TENG.Thus,all of the aforementioned preparations can be viewed as being more complicated,cockamamie and costly.Here,we demonstrated a innovative designed miniaturized TENG based on superimposed electrode layers by utilizing edge effect,and Al foil as the stacking electrode layers and the extended small part of the electrodes as the connection.When d is 1.5 cm,d/L is larger than 0.4,the peak current of TENG with four layer electrodes stacked was 3 times larger than that of TENG with one layer electrode.The peak current reaches a stable state when the number of stacked electrode layers was beyond eight,attaining 3-5 times more than that with single layer electrode.Compared to the traditional TENGs stacked the number of single TENGs,the volume of TENG with superimposed electrode layers can be reduced by 50–80% when achieved 2-5 times larger than the peak current of TENG with single layer electrode.In addition,the magnesium alloys treated by water bath method to grow hydroxyapatite after micro arc oxidation were ultilized to fabricated TENG.The peak voltage,cutrrent of the TENG is 2.8 times,6 times greater than that of TENG which surface has not been treated.Finally,an innovative TENG which can work normally in wet environment had been proposed and we have been exploring the reasons all the time.