Achieving ultrahigh triboelectric charge density for efficient energy harvesting

By Jie Wang, Changsheng Wu, Yejing Dai, Zhihao Zhao, A. Wang, Tiejun Zhang, Zhong Lin Wang. Nature Communications, 2017

644 citations recorded by the source corpus.

With its light weight, low cost and high efficiency even at low operation frequency, the triboelectric nanogenerator is considered a potential solution for self-powered sensor networks and large-scale renewable blue energy. As an energy harvester, its output power density and efficiency are dictated by the triboelectric charge density. Here we report a method for increasing the triboelectric charge density by coupling surface polarization from triboelectrification and hysteretic dielectric polarization from ferroelectric material in vacuum (P ~ 10−6 torr). Without the constraint of air breakdown, a triboelectric charge density of 1003 µC m−2, which is close to the limit of dielectric breakdown, is attained. Our findings establish an optimization methodology for triboelectric nanogenerators and enable their more promising usage in applications ranging from powering electronic devices to harvesting large-scale blue energy. Triboelectric nanogenerators (TENGs) harvest ambient mechanical energy and convert it into electrical energy. Here, the authors couple surface polarization from contact electrification with dielectric polarization from a ferroelectric material in vacuum to dramatically enhance the TENG output power.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/6ee4936b8049a55eb1097f659a85505cb10612d7

How researchers see this paper

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In Biomedical Engineering

1. Chengkuo Lee
2. Long Liu
3. Xinge Guo
4. S. R. P. Silva
5. Qiongfeng Shi
6. R. Dharmasena
7. Tianyiyi He
8. Feng Wen

In Electronic, Optical and Magnetic Materials

1. R. Dharmasena
2. S. R. P. Silva
3. Chengkuo Lee
4. Qiongfeng Shi
5. Long Liu
6. Jie Wang
7. Xinge Guo
8. Tianyiyi He

In Polymers and Plastics

1. Chengkuo Lee
2. S. R. P. Silva
3. Long Liu
4. R. Dharmasena
5. Xinge Guo
6. Qiongfeng Shi
7. Tianyiyi He
8. Jie Wang

Citations in the corpus

• Towards optimized triboelectric nanogenerators (2019, methodology): “,[95] reported a significant enhancement in triboelectric 324 surface charge density, by placing the TENG in a vacuum.”