High efficiency triboelectric charge capture for high output direct current electricity

Literature Information

Publication Date 2023-12-07
DOI 10.1039/D3EE03216G
Impact Factor 38.532
Authors

Kaixian Li, Chuncai Shan, Shaoke Fu, Huiyuan Wu, Wencong He, Jian Wang, Gui Li, Qianjin Mu, Shihe Du, Qionghua Zhao, Chenguo Hu, Hengyu Guo


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Abstract

Direct current triboelectric nanogenerators (DC-TENGs), based on triboelectrification and corona discharge, exhibit advantages of high output energy and low crest factor. However, the air breakdown that occurs at the interface of tribo-layers due to charge accumulation from triboelectrification results in energy loss. Efficiently capturing triboelectric charges is a great challenge for the improvement of the output energy of DC-TENGs. Herein, we propose a new strategy to efficiently capture triboelectric charges within the interface by rationally arranging charge-collecting electrodes (CCEs), achieving a remarkable 396% enhancement in output charge compared with the conventional electrostatic induction method. The rolling mode constant current TENG, using the reasonable arrangement of CCEs, produces an ultrahigh constant current of 0.51 mA with an ultra-low crest factor of 1.02. This constant current TENG achieves an output charge density of 10.06 mC m−2, surpassing all other types of TENGs reported. Additionally, it obtains an average power density of 9.8 W m−2, a remarkable 49-fold compared with the conventional DC-TENG. This work offers insight into the working mechanism of charge collection through corona discharge and proposes an effective charge-collecting strategy in the triboelectrification process.

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Source Journal

Energy & Environmental Science

Energy & Environmental Science
CiteScore: 32.34
Self-citation Rate: 3.4%
Articles per Year: 481

Energy & Environmental Science is an international journal dedicated to publishing exceptionally important and high quality, agenda-setting research tackling the key global and societal challenges of ensuring the provision of energy and protecting our environment for the future. The scope is intentionally broad and the journal recognises the complexity of issues and challenges relating to energy conversion and storage, alternative fuel technologies and environmental science. For work to be published it must be linked to the energy-environment nexus and be of significant general interest to our community-spanning readership. All scales of studies and analysis, from impactful fundamental advances, to interdisciplinary research across the (bio)chemical, (bio/geo)physical sciences and chemical engineering disciplines are welcomed. Topics include, but are not limited to, the following: Solar energy conversion and photovoltaics Solar fuels and artificial photosynthesis Fuel cells Hydrogen storage and (bio) hydrogen production Materials for energy systems Capture, storage and fate of CO2, including chemicals and fuels from CO2 Catalysis for a variety of feedstocks (for example, oil, gas, coal, biomass and synthesis gas) Biofuels and biorefineries Materials in extreme environments Environmental impacts of energy technologies Global atmospheric chemistry and climate change as related to energy systems Water-energy nexus Energy systems and networks Globally applicable principles of energy policy and techno-economics

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