Achieving high-efficiency triboelectric nanogenerators by suppressing the electrostatic breakdown effect

Abstract

Triboelectric nanogenerator (TENG) has attracted broad attention owing to its potential applications in the internet of things era. However, an effective power management strategy to enable maximum energy extraction from...

Achieving a highly efficient triboelectric nanogenerator via a charge reversion process

“…That is, the reversed-polarity charges distribute more uniformly and thus potentially possess a higher threshold, which may need a further investigation. Based on the obtained higher charge density on PTFE films, the electricity generated by the TENG device is also significantly enhanced compared to the previous works, 36–44 as shown in Fig. 1f, which is inspiring for the energy harvesting and conversion performance of TENGs.…”

“…The PMS can utilize the energy of TENG under the low-voltage and high-charge (LV-HQ) state, whose detailed working principle has been documented in the previous work. 39 When Switch AB turns on, the TENG connects with VMC (without the Zener diode), and the stage (i), (ii) and (iii) as shown in Fig. 1b happen sequentially.…”

Self-Powering Gas Sensing System Enabled by Double-Layer Triboelectric Nanogenerators Based on Poly(2-vinylpyridine)@BaTiO3 Core–Shell Hybrids with Superior Dispersibility and Uniformity

“…Another enticing result in the course of our work is that the replacement of the Al electrode with the MoS 2 /SiO 2 /Ni-mesh layer in the PI- b -C 60 /P2VP 10 @BaTiO 3 double-layer TENG resulted in further improved transferred charge density of up to 1228 μC m –2 (∼4.4-fold increase) with open-circuit voltage (990 V) and short-circuit current density (283.8 mA m –2 ) at a cycled compressive force of ∼30 N and a frequency of 3 Hz (Figures a,b and S22). This charge density value, to the best of our knowledge, is the highest reported for TENG so far under practical working conditions without additional ion injection and circuitry (Figure c and Table S1), which will speed up practical TENGs as a power source. − …”

Efficient energy transport in constant-voltage triboelectric nanogenerator-based power units

“…7,9 In terms of energy conversion and electricity generation, boosting the surface charge density to the threshold can guarantee efficient energy conversion and electricity generation in energy transport. 10,11 The surface charge density determines the energy output, which can be increased to the threshold of existing conditions by material optimization, structure design, environmental control, charge pumping and charge excitation. 12–16 Furthermore, the phase-shift design approach can translate pulse-voltage into constant-voltage outputs to increase the inherent energy output efficiency of TENGs from 50% to 100% theoretically, which gives another strategy to ensure efficient energy conversion and electricity generation in energy transport.…”

“…22–25 A universal power management method to solve such intractable issue is provided by introducing a temporary capacitor and a triggerable switch to efficiently transmit the electricity of TENG from the perspective of energy matching. 22,26,27 An in-depth study of the capacitance load of TENGs aids in the investigation of the energy storage performance of the capacitor and its coordination with the switch. These steps enable energy accumulation and fast release, and then provide efficient energy transport in TENG-based power units.…”