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Materials 2020, 13, x FOR PEER REVIEW 5 of 12 3. Results and Discussion 3.1. Triboelectric Output Materials 2020, 13, 4980 5 of 12 The triboelectric voltage and current output of the different pairs of materials represented in Table 1 are shown in Figure 2 for a load resistance of 5 MΩ. The voltage is determined in open-circuit 2.3. Triboelectric Measurements (Figure 2A,C,E) and the current in short-circuit (Figure 2B,D,F) for representative pair of materials, measTuhredtrwibiotheleacltoraicdmreosdisetaunsceed(tRoLd) eotfe5rmMiΩneuthnedeoruatpcuotnvstoalntatgfeo,rcue r(r1e0nNt a)nind tchoerrceosnptoancdt-isnegpaoruatpiount pmoowder. of the different pairs of materials (Table 1) was the contact-separation mode (Figure 1): a force of 10ANmwonasgapthpeliedififnertehnetcopnatiarcst mofodme,aftoerllioawlsedmbeyasaursedpar(aTtaiobnleof1B5)c,mFbigeutwreee2n tihlleusatrmatpelse,s ains ereapchrecsyecnltea.tive examples, the triboelectric performance of PA66:PP, PA66:SEBS and Mica:30BT/PVDF. The oTuhtepueltevctorlitcaglersesppeorncsyeclweaosfothbetasienpedairthoofumghatleoraiadlsreasriestbaentcweseeonf 0a.p5p,r1o,x3i.m3,a5t,e8ly.3,6100a,n3d3.31,5500Van(idn 1a0v0erMagΩeufosrin4g0acyPcilceoss)caonpde2th2e05cAur(rPeinctogtecnhe,rTayteledr,pTeXr,cUycSlAe)rawnigthesrebseotwluetieonn1o2ft8ob3i0taμtA2,0f0oMrtSh/es.same experimental conditions. Further, it is to notice that the 30BT/PVDF sample shows piezoelectric 3. Results and Discussion properties (due to the piezoelectric ceramic material) that contribute to a piezoelectric voltage generation in each cycle (mechano-electrical conversion), together with the triboelectric energy generation, as can be observed in Figure 3E,F. It is to notice that the piezoelectric voltage generation is smTahlleintrciobmoepleacrtisroicnvtolthaegetriabnodelecuctrriecnctonoturtipbutionf.the different pairs of materials represented inTaLbilter1atauresrheopworntsinaFwigidueream2pfolirtuadeloaodftrheesisvtoalntacgeeosfa5ndMcΩu.rreTnhtsegveonlteargaeteidsidnetterribmoienledctriinc osypsetnem-cisr,cfuroitm(Fsiogmurev2oAlt,sCt,oE)thaonudsathnedscuorfrveonltsin[2s9h–o3r3t]-,cairncduictu(rFriegnutrteyp2Bic,aDll,yF)rafonrgrinepgruepsetnotahtuivnedrpeadisr ofμmAat[e3r1ia–l3s4,]m.Tehaesuvroeldtawgeitahndalcouardrernetsoisutatpnuctev(aRlu)esofob5tMainΩeduindtehreapcroesnesntatnwtofrokrcaere(1c0omNp)eintittihve L cwointhtatcht-eseliptearatuiorne,mcondseid.eringtheuseofpristinematerialswithoutanykindofsurfacetreatment. Voltage ← PA66: PP → Current 3.1. Triboelectric Output A 80 40 B 15 -80 -120 -160 -200 C 20 0 -20 -40 -60 -80 -100 -15 -30 00 -40 -45 0 2 4 6 8 10 0 2 4 6 8 10 Time (s) Time (s) Voltage (V) Voltage (V) Currrent (mA) Current (mA) 02468 Time (s) PA66: SEBS D5 0 -5 -10 -15 -20 Figure 2. Cont. 02468 Time (s)PDF Image | Triboelectric Energy Harvesting vs Polymer-Based Materials
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