| At present,countries around the world are faced with the dual crises of energy and COVID-19,and industrial production has been significantly suppressed.While the epiedmic was strictly controlled,China has not only maintained the vitality of industrial production,but also put forward the strategic policy of developing new energy sources and preventing and controlling metal corrosion to increase income and reduce expenditure Triboelectric Nanogenerator(TENG),serving as a novel type of energy device,has attracted more and more researchers' attention,and has made significant contributions in energy development,metal corrosion protection,biological medicine and other fields.TENG has advantages of high stability,dispensing with maintenance,low cost and none environmental pollution,which is a revolutionary innovation in energy utilization In this paper,based on the discussion of the power output ability of TENG,the direction of corrosion protection of various metals and the direction of implantable TENG in the field of biomedicine were claimed:1.Analysis of influencing factors of TENG electrical output performance.(1)The effect of triboelectric layer material type: The results showed that the optimal short-circuit current output of 48 ?A can be obtained by the composition of polydimethylsiloxane(PDMS)and aluminum foil(Al)TENG.Besides,the higher the dielectric properties internal material processed,the higher the short-circuit current output could gain.(2)Influence of TENG structural parameters design.By means of structural design and laser etching of 200 ?m circular array on material surface,the area of friction layer is increased by 148.57%.(3)External control circuit design,this paper designed a TENG external output control circuit,the TENG output circuit was storaged and improved by 1358.33%.It provides a theoretical basis for the adjustment of TENG's output capacity.2.The corrosion behavior of 10B21 boron steel soaked in seawater for 30 days and Mg-3Zn-0.2Ca alloy soaked in simulated solution for 7 days were studied by using the cathodic protection method in TENG group and battery group respectively,and compared with the blank group.Results revealed the formation of a dense protective layer on the metal surface in the solution,which hinders the contact between oxygen and metal base in the corrosion process which controlled by oxygen diffusion rate.Such procedure caused reducing of the corrosion rate.In the experiment,the corrosion products of 10B21 steel decreased by 60.32%,and the degradation rate of magnesium alloy decreased by 6.3% during the 7-day corrosion process.The results lauched the foundation for the study of corrosion protection of implanted alloys with implantable TENG.3.Biocompatible antibacterial properties and in vivo implantation of PDMS-Ti TENG.Ag coating was used as TENG electrode layer.A corrosion control system based on Ag electrode PDMS-Ti foil TENG was established.This TENG has obvious killing effect on S.aureus and E.coli.The output current of TENG reaches 10.8 ?A,the output voltage Vsc reaches 117 V,and the charge transfer amount of single motion reaches 73 n C.Suitable for human body application and magnesium alloy implant corrosion protection conditions.This TENG showed good biocompatibility and antibacterial effect in long-term rat implantation experiments.This study provided a new idea for the application of TENG in vivo. |
PDF Full Text Request