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3.1. FT-IR/XRD Characterization Analysis By comparing the FT-IR patterns of different types of friction layers (Figure 2a), it can be seen that each material has similar functional group peak positions, FT-IR graph shows a similar trend. However, the sharpness of each peak is different, because C-H, C-F and N-F bonds are introduced before doping. This causes a change in the content, which is manifested by a change in the sharpness Sensors 2020, 20, 506 4 of 14 of the corresponding peak position and a certain shift in the peak position. Figure 2b shows the XRD scan of different types of friction layers. After adding PA6, PVDF and Different kinds of regenerated cellulose layers are prepared by blending doping method, and BaTiO3, the XRD pattern of the diffraction peak angle of each friction layer was changed. Specifically, assembled with PTFE to form TENG. After rectification treatment, the capacitor is supplied with after dissolution and regeneration, the friction layer of pure cellulose shows a diffraction peak power to test its charge and discharge performance within 1000 s. After that, power is supplied to position at 19.63° and 22.78°, which is a typical cellulose II type. After the addition of PA6 and PVDF, microcontroller, which is used to drive the alarm of a SFM-27 buzzer and light up the LCD screen a new diffraction peak appears at the positions of 9.28° and 9.91°. After the addition of BaTiO3, new (see Figure 1). diffraction peaks appear at around 32.61°, 39.93°, 46.49°, and 52.05°. In addition, the sharpness of the diffraction peak and the change of the peak width are caused by an increase in the crystallinity of the 3. Performance Testing and Analysis friction layer after the addition of the new substance, which is manifested by an increase in the intensity of the diffraction peak. The diffraction peaks of each friction layer are shifted rightward or 3.1. FT-IR/XRD Characterization Analysis leftward. This is because during the stirring process, the ions are replaced during the phase exchange, By comparing the FT-IR patterns of different types of friction layers (Figure 2a), it can be seen resulting in a change in the intermolecular and hydrogen bonding forces along with the change of that each material has similar functional group peak positions, FT-IR graph shows a similar trend. the lattice size and it is represented by the diffraction peak shift. After adding different substances, However, the sharpness of each peak is different, because C-H, C-F and N-F bonds are introduced the XRD diffraction peak sharpness change, peak shift and new peak position appear to change the before doping. This causes a change in the content, which is manifested by a change in the sharpness internal structure and physical properties of the friction layer, which affect the output performance of the corresponding peak position and a certain shift in the peak position. of the nano-generator. Figure 2. Characterization graphics of different types of friction layers: (a) FT-IR diagram, Figure 2. Characterization graphics of different types of friction layers: (a) FT-IR diagram, (b) XRD (b) XRD diagram. diagram. Figure 2b shows the XRD scan of different types of friction layers. After adding PA6, PVDF and 3.2. CV (Cyclic Voltammetry) Test Analysis BaTiO3, the XRD pattern of the diffraction peak angle of each friction layer was changed. Specifically, afterTdhiseseoleucttirooncahnedmriceagletneesrtaintigono,fthefcreilcltuiolonslea-ybearseodf pfruicretiocenllfuillmoswe sahsopwersfaordmifferdacbtyioantwpeoa-kelpeoctsriotidoen ◦◦ sayts1t9e.m63.Tahnedp2re2p.7a8re,dwfhricthioinsafiltmyp(isciazlec:e1l0lumlomse×II1t0ypmem.A)fitsetrhteheinatedrdmiteiodniaoteflPaAy6eraonfdthPeVcDaFp,acintoewr. apnedakthaencdaltchuelacthiaongresoufltshearpeesahkowinditnh Taareblcea1u:sed by an increase in the crystallinity of the friction ◦◦ −1 −1 TdhifferaelceticotrnoplyetaekuaspepdeawrsasatathLeiCpLossiotilountsionf9o.f281 manodl L9.9.1T.hAefstcearnthreaateddisitsieotntof2B0a–T5i0O03,mnVewsd,iffarnadcttihoen ◦◦◦◦ spceaankpsoatpepnetiaarlawtianrdoouwndis3s2e.6t1to,03–91.9V3.T,h46e.4ca9lc,ualnadtio5n2.E05qu.aItnioand(d1i)toiofns,ptehceifsichcaarpnaceistsanofcethiseadsiffforlalcotwiosn, layeraftertheadditionofthenewsubstance,whichismanifestedbyanincreaseintheintensityofthe 1 diffraction peak. The diffraction peakCs =of each friction layer aIrdeVshifted rightward or leftward. This is 0 2⋅m⋅s⋅ΔV V because during the stirring process, the ions are replaced during the phase exchange, resulting in a change in the intermolecular and hydrogen bonding forces along with the change of the lattice size and where m is the mass of the active substance on the electrode, s is the voltage scanning rate, ΔV is it is represented by the diffraction peak shift. After adding different substances, the XRD diffraction the potential drop in the whole cycle and V0 is the lowest voltage in the cycle. peak sharpness change, peak shift and new peak position appear to change the internal structure and physical properties of the friction layer, which affect the output performance of the nano-generator. 3.2. CV (Cyclic Voltammetry) Test Analysis The electrochemical testing of the cellulose-based friction film was performed by a two-electrode system. The prepared friction film (size: 10 mm × 10 mm) is the intermediate layer of the capacitor. The electrolyte used was a LiCL solution of 1 mol L−1. The scan rate is set to 20–500 mV s−1, and the scan potential window is set to 0–1 V. The calculation Equation (1) of specific capacitance is as follows, and the calculation results are shown in Table 1: 1 V0+∆V C= 2·m·s·∆V V +ΔV 0 (1) IdV (1) V0PDF Image | Green Triboelectric Nano-Generator Composite of Degradable Cellulose, Piezoelectric Polymers of PVDF PA6
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