According to the report of the Physicist Organization Network on June 18, researchers from Harvard University and the University of Illinois at Urbana-Champaign collaborated to develop a 3D-printed lithium-ion microbattery with only one grain of sand and electrification. Performance is comparable to commercial storage batteries. Microbatteries can provide micro-devices for medical, communications, and other fields, including many still in the laboratory, lacking a small battery to provide enough power for the invention. Related papers are published online in the magazine "Advanced Materials." In recent years, engineers have invented many micro-devices, such as medical implant prostheses, flying insect robots, micro-cameras that match eyepieces, and microphones. But the batteries that power them are often larger than the devices themselves, which is contrary to the original intention of miniaturization of the devices. If the electrode is fabricated by a conventional deposition film method, these solid-state micro-cells have a small amount of stored power due to their ultra-thin design, and it is difficult to provide sufficient power for the device. If you can make a kind of ultra-thin electrodes that are tightly interlaced and stacked by multiple layers, you will be able to store more power. The project was led by Jennifer Lewis, a professor at the Hansjog Weis Bionic Engineering Institute at the Harvard School of Engineering and Applied Science. The research team designed a series of functional “inks†with various chemical and electrical properties. With these inks and their special 3D printers, they can print precise structures with electrical, optical, chemical or biological properties, which greatly expand the application of 3D printing. In order to print microelectrodes, they developed and tested several special “inks†that can form working anodes and cathodes like electro-chemical materials, and can be extruded like toothpaste. After printing, they are hardened to form a thin layer like a thin film. They used a metal lithium oxide nanoparticle to make the anode ink, and another material to make the cathode ink to form a tiny, multi-layered structure with closely intertwined anodes and cathodes, each layer thinner than the hairline. . Afterwards, these electrodes are placed in tiny containers and filled with electrolyte. The researchers also tested the amount of charge and charging time stored and released by the microbattery. "In terms of charge and discharge rates, cycle life, and amperage, their electrochemical performance is comparable to that of commercial batteries. We just reduced it to a smaller level," said Xin Dillon, associate professor of materials science and engineering at the University of Illinois, and co-author of the paper. . Donald Ingbel, director of the Weiss Institute, said: "The Jennifer team has reformed the design of microbatteries, which has greatly expanded the practical application of 3D printing and brought new possibilities for the reduction of various types of equipment. "(Chang Lijun) Lighting Accessories,12V Power Box,Online Led Controller,Led Light Dimmer Shen zhen SH LED Technology Co.,Ltd , https://www.pixellightsolutions.com