< img src = "/uploads/blogs/2e/6b/ib-frk9fqhf5_a499ea2a.jpg" Alt = "batteries will be able to work longer thanks to ordinary coffee: what scientists did"/> ~ ~ ~ < P > Scientists from South Korea have found a way to increase the capacity of the secondary, inspired by the process used in the mass production < P > Study Details & nbsp; revealed & nbsp; portal Tech Xplore. The publication explained that secondary batteries are made by mixing active materials, leading additives that help the flow of electricity, and connective substances acting as a kind of glue.
~ ~ < p >There are two methods of mixing these materials: a wet process that uses solvents and a dry process that mixes solid powders without solvents. Dry process is considered more environmentally friendly and can increase the energy density of secondary batteries, but it had many problems with homogeneous mixing.
< P > to solve this problem, South Korean scientists used spray drying technology that has already proven itself in the production of soluble coffee, where coffee concentrate is sprayed and hot air is supplied to produce solid powder.
< P > The principle is that the solvent evaporates instantly because of the high temperature inside the chamber, leaving only a homogeneous mixed composite powder of active materials and leading additives. ~ ~ ~ < P > Initially, the researchers mixed active materials and conduction in the form of a liquid suspension, and then sprayed them in a high -temperature glass from glass tubes. Then they converted the resulting composite powder into high capacity electrodes.< P > Dry electrodes made using this method reached a surface capacity of about 7 marsh/cm2, which is twice as much as commercial electrodes (2-4 marsh/cm2). According to scientists, this technology can be used in next generation batteries, such as solid-state batteries and lithium-grassy batteries.
~ < P > “Thanks to further research, we plan to reduce production costs, improve the capabilities of mass production and increase the maturity of technology for its further transfer to companies”, & mdash; Senior Researcher Jihi Yun.