Can be woven like wool, folded in half like cardboard, and tightly attached to the body like skin. This light and flexible material is actually a battery. With a capacity of more than 600 milliampere-hours per gram, a cycle life of more than 1,000 times, and more than 500 times, the half-fold will not affect its performance ... Recently, the team of Professor Jin Zhong of the School of Chemistry and Chemical Engineering of Nanjing University has achieved Progress has aroused the attention of many people. For a long time, the heavy and hard brick-like battery has limited the shape and application of many devices. This traditional energy device structure has been difficult to meet the development needs of portable and wearable devices. "Can you design some new electrode materials while meeting the three characteristics of flexibility, conductivity, and high performance?" This question caused Jin Zhong to think. Engaged in the field of materials chemistry for more than 10 years, Admiralty uses the high flexibility and conductivity of materials such as carbon nanotubes, graphene, and inorganic nanofibers to serve as an excellent flexible "skeleton" for energy storage electrode materials. On the basis of these materials, through clever structural design, the sturdy and heavy battery gradually changed the traditional appearance in the hands of the Admiralty research group. Generally speaking, there are two types of energy devices, one is responsible for energy storage and the other is responsible for energy conversion. The former stores electrical energy as chemical energy and releases it when it needs to be used. It corresponds to an energy storage battery such as lithium ion, known as a chemical power device; the latter can often convert other forms of energy such as light energy into electrical energy, such as Solar cells and their corresponding energy devices are called physical power devices. "No matter what kind of energy device, if it is made flexible, portable and integrated, it may open up new application areas." In the "hand" of Admiralty, the battery seems to have lost its temper and can become the desired shape. With a photoelectric conversion efficiency of 9.5%, it can be bent, wound, and knotted, and can be quickly charged in only 7 seconds ... In addition to energy storage batteries, the Admiralty research team has also achieved new results in flexible solar cells. Based on carbon nanofiber materials, the team prepared multi-functional coaxial nanocomposite fiber electrode materials by modifying TiO2 and MoS2 two-dimensional materials. Using this fiber electrode, a flexible linear solar cell that can be bent and woven and light charging energy fiber are assembled, and excellent performance is obtained, and it can be charged spontaneously quickly under light. Compared with traditional planar energy devices, fibrous energy devices are lighter in weight, more flexible, and more integrated. At the same time, they may be able to be mass-produced and applied through textile technology like polymer fibers in the future, thus satisfying The demand for various portable and wearable flexible electronic devices. Imagine wearing clothes that can provide electricity and glow in the future. Your winter will no longer be cold. Warning suits, watches, radio frequency cards ... Flexible batteries allow energy to be carried around. In addition to civilian use, flexible batteries can also meet the energy supply needs of future information operations. "In modern individual soldier special combat equipment, one-third of the soldier's load comes from the battery, but the existing battery system can only last for 72 hours." Jin Zhong said, "The development quality is small and the battery life The new battery system with long output, high output power, high safety, and more wearability is of particular importance in satisfying defense applications such as information operations, drones, and underwater vehicles. "(Reporter Wang Tian)
The Cnc Plasma Cutting Machine is a desktop gantry structure. The whole work surface of the machine adopts the integral rim structure, which has the characteristics of stable and reliable operation and long service life. The model adopts optical axis linear guide and bilateral drive. It can realize the cutting of any metal materials according to any pattern, and it is suitable for the rapid CNC cutting of carbon steel plates, aluminum plates, copper plates, stainless steel plates and other workpieces with medium and thin plates. The effect is good, no dross and burrs are used; Directly use Wentai software or AutoCAD drawing software to directly draw graphics, without conversion, direct cutting, and can be simple to discharge, the workpiece is set side by side. At the same time, it also solves the problem that the thin plate and the thick plate cannot be compatible. This machine comes standard with plasma cutting method, equipped with arc-pressure automatic height-adjusting system and torch anti-collision system. It is also equipped with a set of water spray cooling device to reduce the thermal deformation of thin plate cutting; this type of equipment is cutting and cutting equipment for sheet metal processing industry and ventilation pipe industry.
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