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"Friction, the past was electrification, and now it is power generation." On the afternoon of March 18, the Beijing Institute of Nano-Energy and Systems, Chinese Academy of Sciences held a demonstration exhibition on frictional power new energy technologies. Academician Wang Zhonglin carried a research team to present the latest research to reporters. As a result, on-site operation is performed on 20 frictional power generation devices such as a rotary DC friction generator, a brake power generation simulator, and a wind friction power generator, enabling people to experience a brand-new energy supply model that can generate electricity in one move.
Speaking can generate electricity, walking can generate electricity, and touch can generate electricity. Frictional power generation technology can directly supply power to portable and wearable devices through human activities, making the human body a micro-generator.
Rain drops can generate electricity, red flags can generate electricity, wheels can rotate to generate electricity, machine noise can generate electricity, and frictional power generation technology can collect tiny energy around you, allowing you to “powerâ€!
"This is a revolutionary change in energy use. Let this invention change people's lives and promote it to the world is my Chinese dream." Wang Zhonglin said in an interview with reporters that frictional power generation devices can efficiently collect sounds, walks, and Various mechanical energy, such as water flow and breeze, have great application prospects in terms of green energy supply and self-supply. To charge your mobile phone in the future, you don't need to find a socket everywhere. You only need to collect the energy generated on the soles of your shoes when you walk. "A person's normal output power is 67 watts a day, and 11 watts can be converted to electrical energy."
Friction generators were successfully developed by academician Wang Zhonglin in January 2012. Different from the traditional principle of electromagnetic induction generator and friction Motor, the triboelectric generator utilizes the coupling of frictional electrification and electrostatic induction. At the same time, the design of the thin-layer electrode is used to realize the effective output of the current.
Nowadays, the latest research result of the team, Rotary DC Friction Nano Generator, successfully overcomes the shortcomings of the small output current and high voltage of the Friction Generator and it is difficult to directly charge the electrical device effectively. The array pattern is patterned through the friction surface. The rotary operation mode increases the output current to 3 mA and the highest average stable output power to 1.5 watts. The constant current output is achieved for the first time, enabling real-time power supply to small appliances.
"After surface treatment with nanotechnology, more than 10,000 commonly used materials such as clothing, paper, and mineral water bottles can become our power generation devices." Wang Zhonglin said that the use of nanotechnology to add various patterns to the material can increase friction materials. Specific surface area increases the output current by 1 to 4 orders of magnitude.
The latest achievements made people realize that the technology of the triboelectric generators is rapidly rushing towards industrialization, and is expected to rank among the green and new energy sources for large-scale application from the tiny energy sector.
“For example, our tidal energy collection device can make the power generation unit into a table tennis table, put these table tennis nets into a seawater of 5 meters depth, and a surface of 1 square kilometers of sea surface can produce megawatts of electric energy. "Wang Zhonglin said.
“In the future, when people encounter disasters such as plane crashes and earthquakes, they can use their own power generation equipment to transmit rescue signals.†Academician Wang Zhonglin demonstrated on-the-spot glove friction generator technology. This technology can be extended to the shaking of the arm while walking and even skirts. friction. When faced with a major disaster, trapped persons can provide search and rescue personnel with important location information through self-generation.
Wang Zhonglin revealed that triboelectric generators have the advantages of light weight, small size, high energy density, simple structure, low cost, and ease of scale processing, which are very suitable for large-scale industrialization and therefore have attracted great interest from the industry. “We started patenting two years ago. Now there are more than 10 companies that have contacted us for cooperation. Sensors and mobile phones are expected to be the first to be industrialized in both directions.â€
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