Design of a Self‐Powered System by Wind‐Driven Triboelectric Nanogenerator Based on 0.94(Bi_0.5Na_0.5)TiO₃–0.06Ba(Zr_0.25Ti_0.75)O₃/Polyvinylidene Fluoride (BNT–BZT/PVDF) Composites

Abstract

The portable power bank as an energy storage device has received tremendous attention while the limited capacity and periodical charging are critical issues. Here, a self‐charging power system (SCPS) consisting of a 0.94(Bi0.5Na0.5)TiO3–0.06Ba(Zr0.25Ti0.75)O3/polyvinylidenefluoride (BNT–BZT/PVDF) composite film‐based triboelectric nanogenerator (TENG) is designed as a wind energy harvester and an all‐solid‐state lithium‐ion battery (ASSLIB) as the energy storage device. The optimized TENG can provide an output voltage of ≈400 V, a current of ≈45 µA, and a maximum power of ≈10.65 mW, respectively. The ASSLIB assembled by LiNiCoMnO2 as the cathode, NiCo2S4 as the anode, and Li7La3Zr2O12 as the solid electrolyte can maintain a discharge capacity of 51.3 µAh after 200 cycles with a Coulombic efficiency of 98.5%. Particularly, an ASSLIB can be easily charged up to 3.8 V in 58 min using the wind‐driven TENG, which can continuously drive 12 parallel‐connected white light‐emitting diodes (LEDs) or a pH meter. This work demonstrates the development of low‐cost, high‐performance and high‐safety SCPSs and their large‐scale practical application in self‐powered microelectronic devices.

From Triboelectric Nanogenerator to Uninterrupted Power Supply System: The Key Role of Electrochemical Batteries and Supercapacitors

“…In addition, the ASS-LIB can be quickly charged to 3.8 V in 58 min utilizing wind-driven TENG (Figure 10b,c). It can operate 12 white LEDs in parallel or pH meters constantly [101]. Wang et al, developed a combination of TENG and flexible ZIB integrated in a specifically designed flexible 3D spacer fabric, which can concurrently harvest mechanical energy from human motion and store electrical energy through batteries (Figure 10d).…”

Rational design on high-performance triboelectric nanogenerator consisting of silicon carbide@silicon dioxide nanowhiskers/polydimethylsiloxane (SiC@SiO2/PDMS) nanocomposite films

“…TENGs have already captured increasing attention, not only possessing the advantages of simple preparation, wide material selection, lightweight, low cost, and efficient harvesting of low-frequency energy but also providing a new energy supply method for nano/micro-electronic devices [ 4 – 9 ]. Many reports proved that TENG has been widely used in self-powered sensing [ 10 , 11 ], portably wearable electronics [ 12 ], micro-nano energy [ 13 – 15 ], blue energy [ 16 , 17 ] and high voltage power [ 18 ]. However, the relatively low output current and power of the TENG significantly limit its practical application.…”