Journal
ACS ENERGY LETTERS
Volume 6, Issue 4, Pages 1490-1499Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.1c00368
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Funding
- National Key R&D Project from the Minister of Science and Technology [2016YFA0202701]
- National Natural Science Foundation of China [61774016, 21773009, 51432005, 5151101243, 51561145021]
- China Postdoctoral Science Foundation [2019M660587]
- Beijing Municipal Science & Technology Commission [Z171100000317001, Z171100002017017, Y3993113DF]
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A new wind energy harvesting device has been developed to recover the wind energy generated by high-speed trains, significantly improving energy harvesting efficiency and durability, providing a new energy harvesting mode for intelligent high-speed train systems.
The operation cost of an intelligent high-speed train system is greatly increased by the enormous energy demand of large-scale signal and sensor networks. However, the wind energy generated by high-speed trains is completely neglected. Herein, a wind-energy-harvesting device, which is based on an elastic rotation triboelectric nanogenerator (ERTENG), is fabricated to harvest the wind energy generated by high-speed moving trains and power the relevant signal and sensing devices. Due to the significant decrease in friction force resulting from reasonable material selection and elastic structure design, the energy-harvesting efficiency of an ER-TENG is doubled and the durability is increased by 4 times compared to the same characteristics of a conventional rotation sliding triboelectric nanogenerator (RS-TENG). Our findings not only provide an in situ energy-harvesting pattern for an intelligent high-speed rail system by recovering the otherwise wasted wind energy generated by high-speed trains but also offer a potential strategy for large-scale wind energy harvesting by TENGs.
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