According to foreign media reports, the science team at the University of Central Florida (UCF) has developed a "super battery" capable of storing more energy.
The traditional lithium battery 1500 times after the performance began to have varying degrees of attenuation, and this super capacitor can be used continuously for 30,000 times performance will not be reduced.
"Just swap out the battery in your phone with this supercapacitor, and then recharge your phone for a few seconds, then you will not have to recharge your phone for a week." Nitin Choudhary, one of the researchers, Dr. introduction.
People with smartphones generally encounter the problem that when the battery is used for about 18 months, the time it takes to recharge the phone begins to get shorter and shorter. This shows that the battery capacity to reduce electricity.
Scientists have been studying how to use nano-materials to improve the battery capacity, hoping to develop more powerful super-capacitor to replace the battery we are using at this stage.
Earlier, it has been confirmed that two-dimensional materials have strong electrical storage performance. Although some people tried to add graphite formula to two-dimensional materials in the past, the effect is not satisfactory. Researchers at Florida Central University opted to apply a newly invented two-dimensional material to capacitors.
"It has also been a bottleneck in our industry that most of today's researchers face the challenge of combining 2D materials with current capacitive systems and our team has used a simple and easy chemical synthesis method that works well Put the two together, "said lead researcher Yeonwoong Jung.
The supercapacitors developed by the team consist of millions of wires, each measuring just a few nanometers in length, each wrapped in two-dimensional material. High conductivity can speed up the movement of electrons and transfer speed, so that the battery can be ultra-fast charge and discharge. "For small devices, our materials are far beyond the conventional standards in energy density, power density and stability," said Jung. The future, electric vehicles and other equipment can also use this new capacitor. Because of its excellent pliability and its ability to bend, it can also be combined with wearable devices.
Of course, the Central Florida University team also pointed out that it is still some time before the commercial mass production of the super battery is realized. This product is more of a new inspiration for the battery technology research and development.
A type of Grinding Machine that grinds a workpiece plane or a profiled surface.The main types are horizontal axis rectangular table, horizontal axis round table, vertical axis rectangular table, vertical axis round table and various special surface grinders.
â‘ Horizontal axis table surface grinder
The workpiece is held by a rectangular electromagnetic table or clamped on the table and reciprocated longitudinally.
The wheel frame can be used for lateral intermittent feed movement along the dovetail guide of the slide. The sliding seat can be vertically intermittently fed along the guide rail of the column, and the workpiece is ground by the grinding wheel, and the grinding precision is high.
â‘¡ Vertical shaft round table surface grinder
The vertically mounted grinding wheel spindle grinds the workpiece with the grinding wheel end face, and the grinding wheel frame can perform intermittent vertical feeding movement along the guide rail of the column.
The workpiece is mounted on a rotating circular table for continuous grinding and high production efficiency.
In order to facilitate the loading and unloading of the workpiece, the circular table can also be moved longitudinally along the bed rail.
â‘¢ Horizontal axis round table surface grinder
Suitable for grinding round sheet workpieces, and can be used to tilt and grind round workpieces with different thickness.
â‘£ Vertical axis rectangular table surface grinder
Since the diameter of the grinding wheel is larger than the width of the table, the grinding area is large, which is suitable for efficient grinding.
⑤ Double end grinding machine
The two parallel planes of the workpiece are simultaneously ground by the grinding wheel end faces of the two grinding heads, and there are two types which are the horizontal shaft and the vertical shaft.
The workpiece is guided through the grinding wheel by a linear or rotary feeding device.
This type of grinding machine is highly efficient and is suitable for mass production of parts such as bearing rings and piston rings.
In addition, there are guide grinding machines for grinding the guide surface of machine tools, and special grinding machines for grinding turbine blade profiles.
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