TY - JOUR
T1 - Frequency band broadening and charge density enhancement of a vibrational triboelectric nanogenerator with two stoppers
AU - Qi, Youchao
AU - Liu, Guoxu
AU - Kuang, Yang
AU - Wang, Lu
AU - Zeng, Jianhua
AU - Lin, Yuan
AU - Zhou, Han
AU - Zhu, Meiling
AU - Zhang, Chi
N1 - Funding Information:
This research was supported by the National Natural Science Foundation of China (Nos. 51922023 , 61874011 ), and Fundamental Research Funds for the Central Universities ( E1EG6804 ).
Publisher Copyright:
© 2022 The Authors
PY - 2022/8
Y1 - 2022/8
N2 - Vibrational triboelectric nanogenerators (V-TENG) can be used to harvest broadband vibration energy due to the nonlinear impact force induced by a stopper. However, V-TENGs with a single stopper have limited bandwidth and surface charge density, which has limited their application in wideband vibration energy harvesting. Herein, a V-TENG with two stoppers and a charge pumping effect is proposed for frequency band broadening and charge density enhancement. The theoretical analysis and experimental validation have indicated the V-TENG with two stoppers could improve the bandwidth by 75% compared with one stopper at a gap distance of 0.5 mm. Moreover, a charge pump can be constructed with two output channels, which has improved surface charge density by about 14 times. With the frequency varying from 18 to 38 Hz, the V-TENG can continually power 400 LEDs and charge a commercial capacitor quickly. This work has shown an encouraging method for enhancing the performance of V-TENGs, which also has great prospects in harvesting wideband vibration energy from machines, cars, ships, and human motions for self-powered electronics.
AB - Vibrational triboelectric nanogenerators (V-TENG) can be used to harvest broadband vibration energy due to the nonlinear impact force induced by a stopper. However, V-TENGs with a single stopper have limited bandwidth and surface charge density, which has limited their application in wideband vibration energy harvesting. Herein, a V-TENG with two stoppers and a charge pumping effect is proposed for frequency band broadening and charge density enhancement. The theoretical analysis and experimental validation have indicated the V-TENG with two stoppers could improve the bandwidth by 75% compared with one stopper at a gap distance of 0.5 mm. Moreover, a charge pump can be constructed with two output channels, which has improved surface charge density by about 14 times. With the frequency varying from 18 to 38 Hz, the V-TENG can continually power 400 LEDs and charge a commercial capacitor quickly. This work has shown an encouraging method for enhancing the performance of V-TENGs, which also has great prospects in harvesting wideband vibration energy from machines, cars, ships, and human motions for self-powered electronics.
KW - Charge pump
KW - Nonlinear impact force
KW - Surface charge density
KW - Triboelectric nanogenerator
KW - Wideband vibration
UR - http://www.scopus.com/inward/record.url?scp=85131085955&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2022.107427
DO - 10.1016/j.nanoen.2022.107427
M3 - Article
AN - SCOPUS:85131085955
SN - 2211-2855
VL - 99
JO - Nano Energy
JF - Nano Energy
M1 - 107427
ER -
