期刊
ADVANCED ENERGY MATERIALS
卷 11, 期 28, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202101147
关键词
charge shuttling; current boosting; sliding charge pump; triboelectric nanogenerators; voltage stabilization
类别
资金
- National Natural Science Foundation of China [52075286, U1613207]
- National Science and Technology Major Project of China [2011ZX02403]
- National Key Research and Development Program of China [2018YFF0300606]
- Tsinghua University Initiative Scientific Research Program [20193080001]
A new charge pumping technology for sliding-mode TENG is demonstrated in this study, utilizing unfixed shuttling charges to generate electricity and achieving voltage stabilization and enhanced current. This technology can elevate charge density, reduce high output voltage, double output electricity, reduce voltage fluctuation, increase current, and obtain ultrahigh charge density.
As an emerging harvester for mechanical energy, the ultrahigh and unstable voltage and low surface charge density have limited the practical applications of triboelectric nanogenerators (TENGs). Herein, a charge pumping technology is demonstrated for sliding-mode TENG with voltage stabilization and enhanced current by utilizing unfixed shuttling charges to generate electricity. A voltage booster circuit and a switch circuit are incorporated to elevate charge density and reduce high output voltage, respectively. With this technology, output electricity can be doubled owing to its two conduction domains and the voltage is outputted in an approximately direct-current form. Moreover, a reduction of 63.9% in voltage fluctuation and an elevation of 43.4% in current are achieved, and an ultrahigh charge density is obtained up to 1328 mu C m(-2). This sliding charge pump technology is fundamentally different from traditional ones, providing insight into enhancing the output of TENG and offering a new high-output energy harvesting strategy.
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