The Georgia Institute of Technology in the United States has made a groundbreaking advancement in vibratory power generation, creating a technology capable of producing over 1,000 times more power than previous methods. This innovation was showcased at the 247th American Chemical Society (ACS) National Meeting & Exposition in Dallas, Texas, where Professor Wang Zhonglin presented his findings. In his paper, he stated that this new technology could potentially replace steam turbines and revolutionize energy production in the near future.
Wang’s research team has been working on various types of vibration-based energy harvesters. This time, they introduced a device called the "Triboelectric Nanogenerator" (TENG), which utilizes triboelectricity—generated through friction—to produce electricity. By combining this principle with small-scale inductors, they created a highly efficient system for converting mechanical vibrations into electrical energy.
The original version of TENG was developed in January 2012, but its power output was quite low. Over the next year, the team significantly improved its performance, increasing it by about 100,000 times compared to the initial version. A key breakthrough came from microfabricating the surface of polymer sheets, which dramatically increased the surface area and thus the energy output. As a result, the power output increased by 1,000 times.
This advancement has led to an impressive energy conversion efficiency of up to 60%, with a maximum output power of 31.2 mW/cm² per unit area and 490 mW/cm³ per unit volume. For comparison, traditional vibration generators typically only produce a few tens of μW/cm². The new TENG is 1,000 times more powerful, and a single 1 cm² component can provide enough energy for mobile communication devices.
To test its practical applications, the team has developed multiple TENG prototypes and integrated them into everyday objects such as insoles, mats, backpacks, and even marine buoys used for wave energy harvesting. According to reports, they are currently working on commercial products like mobile phone chargers based on this technology.
Wang Zhonglin emphasized that TENG is not just suitable for small-scale energy solutions but also holds promise for large-scale power generation. He estimates that the technology will be ready for widespread use within the next five years. "This is not just a lab experiment—it's a real-world solution that could change how we generate and use energy," he said.
(Written by Wild Zezhe Students, Nikkei Online Technology Feed)
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